microcontrollers

[halcyon mesa]

anyone who uses Arduino

no

Arduino is direct upload code with the cable

with Laptop or PC

if you can manage a mobile to Arduino Cable

maybe it can work

From what I know

it cant be wireless

[rain basalt]

hi guys, im starting from my main.py my program.py. i want that the program.py to start but on an exception i want to load my failsafe.py. how do i try: an external program.py?

if OTA == 0:
print('starting program')
try:
OTA = program.mainprog(OTA)
except:
with open("failsafe.py") as f:
with open("program.py", "w") as f1:
for line in f:
if "ROW" in line:
f1.write(line)
machine.reset()

[hexed moss]

I'm making my first steps with micropython and my pico w with vs code. All works fine, I can run code via the run button in vs code but when I upload the main.py to the board it runs the the programm but I can't reconnect to it. Even when there is no loop going on in the code. I have to factory reset the pico via flush_nuke.uf2 so I can connect again. Any ideas what I could do wrong here?

[latent nest]

i updated my Raspberry pi 3 with the latest os
i set up my antenna wireless wifi adapter with this https://www.youtube.com/watch?v=oM2kAnITNyE

except i cant tell if my raspberry is using it or the inbuilt antenna because the the raspberry still shows the wifi signal in the taskbar

also when i do ip -br link i only see eth0 and wlan0 no wlan1

[wild wren]

my pi is connected to wifi but it can't connect to websites

pi@raspberrypi:~ $ curl google.com
curl: (6) Could not resolve host: google.com

pi@raspberrypi:~ $ cat /etc/resolv.conf
# Generated by resolvconf
nameserver 1.1.1.1
nameserver 1.0.0.1
nameserver 8.8.4.4
nameserver 8.8.8.8```

[opal lodge]

if it's just a normal raspberry pi (not a pico/RP2040) and it's not about using it with things like GPIO i think your question belongs in #unix for general linux questions

[hasty zealot]

Hey @bronze jasper!

You either uploaded a .txt file or entered a message that was too long. Please use our paste bin instead.

[tired schooner]

bump
TL;DR
need a transmitter and receiver which work on hz signals instead of bluetooth

[opal lodge]

you mean cheap 433 MHz stuff instead of zigbee or zwave as a replacement for your bluetooth remote/button?

[tired schooner]

correct, exactly that

this is to avoid the useless "reconnect" issues I'm having with bluetooth

[icy quarry]

if you want something "That works" rather than geeking out with it, zigbee/zwave are pretty simple and reliable. Plus they integrate very well with systems like home assistant

[tired schooner]

I don’t care that much about home assistant functionality etc. I’d just want the receiver connected to my RPI & my rpi runs a simple script whenever it receives a signal from the transmitter

[hallow igloo]

hello, i have arduino pro micro (clone)
is it possible to send keys simultaneously with using python. (i just don't wanna wait for upload like arduino sketchs)

[fierce pawn]

Hi

I'm tryna doing ground station with pyserial

To explain briefly, I need to collect the sensor data from the arduino in the program I wrote with python and send this data to another serial port with the program

I did the sending part

but couldn't do the taking datas from arduino

the sending part is:

import struct
import time

import serial

array1 = bytearray(78)
array1[0:4] = bytes.fromhex('FFFF5452')
array1[76:78] = bytes.fromhex('0d0a')

altitude = float(input("altitude: "))
gps_altitude = float(input("gps altitude: "))
latitude = float(input("latitude: "))
longitude = float(input("longitude: "))
payload_altitude = float(input("payload altitude: "))
payload_latitude = float(input("payload latitude: "))
payload_longitude = float(input("payload longitude: "))

array1[6:34] = struct.pack('<7f', altitude, gps_altitude, latitude, longitude, payload_altitude, payload_latitude, payload_longitude)

with serial.Serial('COM16', 19200, serial.EIGHTBITS, serial.PARITY_NONE, serial.STOPBITS_ONE) as ser:
    while True:
        array[75] = sum(array[4:75]) % 256
        ser.write(array1)
        array1[5] += 1
        time.sleep(3)

@opal lodge helped for this sending code

so basically this works with user input data and can succesfully send another port with byte packets

now, I'm trying to use data from arduino instead of user input

[strange prairie]

can somebody help me

i am getting this error when uploading code to esp8266

BrokenPipeError: [Errno 32] Broken pipe

[fierce pawn]

https://stackoverflow.com/questions/73180357/pyserial-transfer-from-one-port-to-another-port

[balmy ravine]

does a button have to be connceted to specific GPIO pins on my pico

plus I need help as my buttons aren't working

[blazing kite]

how do i convert a jpg file, to a bmp file? can't use big libraries

[thick crater]

Hi zulu, I have a feeling thats gonna be hard on a microcontroller.. Which hardware are you using?

You could maybe send it to a separate system and have that system convert it

I believe imagemagick supplies a tool for that

[lofty cypress]

which microcontroller should I buy for a calculator(+, -, /, *, ^^, log, sin, tan and cos)?

[lofty cypress]

like which one between these(or any better) aruduino uno 328p or arduino uno r3 328p, for the calculator

[wintry junco]

Hey can we write a discord bot on a ESP32 device (which is a MagicBit)

or a web server

[fierce pawn]

https://stackoverflow.com/questions/73180357/pyserial-transfer-from-one-port-to-another-port

how can I make something like arduino's serial monitor with python

I'm trying to make something like arduino's serial monitor and I really need to help

[fierce pawn]

this is my code

[hallow igloo]

can i use vscode with a raspberry pi pico

[haughty hound]

i know we talk about rasp pi's, but this include circuitry?

[errant wigeon]

As in do you have questions about a circuit? You're welcome to ask, some folks here have various degrees of experience in circuit design and if not, folks can point you towards resources they know of

[hallow igloo]

wich pico do you need for a bad usb

[strong depot]

Are any of you aware of a MAVLink or MultiWii library for micro/circuit python?

[rain basalt]

my program.py is 15KB in size with OTA i get memory allocation failed, allocating 4096 bytes

if i cut some lines it gets through, is there a way to calucated line of code in micropython to mem usage?

anybody here successful build m5stack firmware from the source?

[gentle vapor]

any, but you don't need wifi. There's one way of doing it https://github.com/dbisu/pico-ducky

[rain basalt]

after flashing i only see this via the shell. if i use the official firmware binary it works

[lofty cypress]

can I connect arduino with LCD without potentiometer?

[strange prairie]

yes you can connect LCD without potentiometer. check this out https://create.arduino.cc/projecthub/hrsajjad844/lcd-display-without-potentiometer-and-resistor-0d1357

[lofty cypress]

which hole is vdd and vss in lcd

https://hacksterio.s3.amazonaws.com/uploads/attachments/1326370/pin_diagram_jXcSZQjavH.jpg

vdd is second hole?

[lofty cypress]

thanks it works

[strange prairie]

Welcome

[hallow igloo]

Hello, I am trying to write micropython on a microbit, and have installed uflash on my system. Flashing and running a regular python script works fine, but I have a Grove Shield plugged in, and it looks like I need a library to use it. I installed the library on my computer through pip, but I don't know how to transfer it onto the microbit in order to use it in my scripts. If anyone could help me flash/use the library, I would appreciate your help.

[gentle vapor]

hi, what library is this ? do you have a link ?

[hallow igloo]

https://github.com/Seeed-Studio/grove.py

[gentle vapor]

ok so that's a library for linux, it's not gonna work on micropython

you probably don't need a library anyway, just to identify what pins the grove connectors are wired to and use Micropython's standard Pin features

(and the touch pads)

this one right ? https://www.seeedstudio.com/Grove-Shield-for-micro-bit-p-2947.html

[lofty cypress]

my baclight of lcd is not lighting

[lofty cypress]

nvm it did

[elfin fern]

what do i do if i have an error in an line that does not exist (micropython)

[pastel jay]

I think you connected in reverse polarity and you should use resistor[10k] for not burning your backlight

[errant wigeon]

It could be you're missing a closing bracket or quote above it. It could also be in some file you imported, but the most likely is there's a line with a, ", ', ], }, ), or something missing

[wintry junco]

Hey can you hack into a micro-controller?

**anyone

***which is me

****I want to practice penetrating testing

[solid narwhal]

I mean anything you would hack on a micro controller would be low level stuff

you can always use micro controllers as a tool tho

[errant wigeon]

Yes you can but micro's don't usually have an operating system so it isn't really useful unless you know what you want to do with it

[dreamy egret]

just saw this post after burning the backlight of the lcd...... Oh what a day!

[pastel jay]

https://c.tenor.com/7Ypq9_9najcAAAAM/thumbs-up-double-thumbs-up.gif

[still pilot]

Hey quick question, I'm new to programming in general and recently got a Arduino kit from Elegoo, (Mega 2560 complete to be exact) And I wanted to know if I could program my Arduino in Python?

look c++ scares me, i've heard horror stories from friends

[errant wigeon]

The pinned messages have a more thorough explaination

#microcontrollers message
The answer is not usually, but there are work arounds if you absolutely can't use C

[hallow igloo]

Hi.i have a query. I am using a mpu6050 with esp32 and I want to get it's reading in a python code that plots the coordinates and works some computation on them. Is there any method of sharing data from esp32 to python code without programming the esp in micropython

[jagged hatch]

Hi guys I need some tips on solving a operation. For 48<val<2047
Need to do the following bitwise operation but val needs to be represented in a fixed 11 bit length. Can’t use s.zfill because it’s micropython.
(val ^(val>> 4) )^(val >> 8)

[gentle vapor]

like that ? f"{val:011b}"

if you need zfill/ljust/rjust in general:

MicroPython v1.19.1 on 2022-06-18; Raspberry Pi Pico with RP2040
Type "help()" for more information.
>>> val = 283
>>> f"{val:011b}"
'00100011011'
>>> num = "421"
>>> f"{num:>011s}"
'00000000421'
>>> f"{num:<11s}"
'421        '
>>> 

[gentle vapor]

yes, what do you want to program it with ? how do you want to transfer data (wifi ? serial USB ?)
In general you can use the serial connexion to communicate with a board using pyserial on the PC, or you can use wifi with or without an external server like MQTT, there are examples in Arduino for all kinds of uses

and then there's the ESPHome stuff

[hallow igloo]

I am programming the esp using C/C++ used in Arduino ide. And data would be transferred using inbuilt wifi or Bluetooth whichever is more power efficient

Is there a technique to get the readings of the sensor into a python script?

[gentle vapor]

for power efficiency and live updates I would think bluetooth is the better solution, there are bluetooth libraries in python, though I've only used Blinka's BLE libraries on a Raspberry Pi, relying on Nordic's UART service on the NRF52, so... I can't point to an exact solution for ESP, but they exist for sure

[hallow igloo]

Yes I think the same. But do you know of any method of sharing data between esp32 and python script. A fellow suggested to use webservers. Would that be helpful?

[karmic palm]

Hello, i have a question. Where can i find a book or a course for microcontrollers? Please tag me when will you answer. Thanks

[jagged hatch]

this should work for me. Thank you . Btw What should I type in google for more detailed knowledge . Python Number formatting?

[gentle vapor]

this is specifically using what is called f-strings and you can also lookup the python format() function, there might also be limitations on those in MP

[jagged hatch]

I got it working bro thank you but the code looks messy as hell

  thr ='{:0>12}'.format(bin(a.map()<<1)[2:])
  rshift = '{:0>12}'.format(bin((int(a,2)>>4)^(int(a,2)))[2:])
  rrshift ='{:0>12}'.format(bin((int(rshift,2)>>8)^(int(rshift,2)))[2:])
  crc = '{:0>4}'.format(bin((int(rrshift,2))&(int(15)))[2:])
  print(thr+crc)
  time.sleep_ms(100)

The calculation is meant to 12bit data>>4,then^,then>>8,then^,lastly mask the last 4 bits with 1111

[hallow igloo]

This is much later but yes PLEASE tell me how to use it in micropython

Or:
Hello, I've asked about microbit before, but this time I think I'm headed in the right direction. I have the micropython runtime flashed to the microbit, and it's connected to my laptop by usb cable. On my laptop, I installed microrepl and I can connect to the microbit via repl now. However, I have additional microbit peripherals that need a library called grove to work. I installed grove via pip on my laptop, so is there a way I could import it into the microbit via repl? If you could tell me how to copy the files over, or compile a custom micropython runtime including the grove library in it, that would still solve my problem.

[hard nimbus]

hello ppl, just got my raspberry pi pico and i dont know how to connect it??

its not original i think

its from ali express

and instead of the BOOTSEL button it has 3 buttons BOOT USR RST

i think it has to be detected as a storage device but its not detected at all

[gentle vapor]

you would know if you had a real one, they are not hard to spot

[gentle vapor]

you have to hold boot and press reset

one element to recognize the original ones: they still don't have a reset button... 🙄

there are many good RP2040-based boards though, they just have a different name

and depending on what you want to install on it, you might need a board definition for the board

[hard nimbus]

i think i have a rp2040 based one

yeah its not the original

but i somehow managed to boot it and program into it

thanks btw

[bright sable]

ive never done anything microcontroller related. how am i supposed to figure out if i need a ardunio or rasperry py

[errant wigeon]

#microcontrollers message
The pinned message has some starting information. It really depends on what you're trying to do and what you're experience and constraints are

[bright sable]

i want to somehow monitor something with a camera and when i detect movement i want to get some sort of feedback so i know without needing to stand up. pretty much none experience

[errant wigeon]

For visual monitoring you'll probably want to look into computer vision, which the raspberry pi is better suited for

https://pyimagesearch.com/2015/06/01/home-surveillance-and-motion-detection-with-the-raspberry-pi-python-and-opencv/
https://automaticaddison.com/motion-detection-using-opencv-on-raspberry-pi-4/
are two places to start

[bright sable]

how would i start a step earlier then. like how to select the right raspberry, or know which modules are original?

[errant wigeon]

The guides themselves have pretty good outlines about what parts you need
Just about any pi computer will probably work. A 4 gb raspberry pi 4 is what I'd try to get. That said, they're probably going to be hard to find.
https://www.raspberrypi.com/products/raspberry-pi-3-model-b-plus/
https://www.raspberrypi.com/products/raspberry-pi-4-model-b/
I wouldn't go below a 3 b though just for convenience and power
They also sell camera modules
https://www.raspberrypi.com/products/camera-module-v2/
Which should suffice

[bright sable]

oh well they are way more expensive than i thought

[bright sable]

what if my idea would need 3 cameras on three different positions? would this mean, i need 3 raspberrys then?

[errant wigeon]

https://www.arducam.com/multi-camera-adapter-module-raspberry-pi/
There exist some solutions (like the above link--I've never used or heard of them before and can't comment on how well it works), however it really starts pushing what a pi can do. if you're running open cv on each video feed it can get to be a lot. One camera per pi is easier to get going if you don't know what you're doing

[latent nest]

hi
ive got a bot that goes online when i host it on a raspberry pi
but it doesnt respond
it works when i run it in vs code tho
the bot doesnt use commands but reads messages' content

i had gotten an intents error and changed it to this to avoid it
client = discord.Client(intents=discord.Intents.default())

if anyone got experience doing this with the RPi, holla at me

i followed this: https://www.youtube.com/watch?v=JEcUyuk3uOs

[tacit burrow]

Intents.default() doesn't include the messages intent
you'll to explicitly set it to True

intents = discord.Intents.default()
intents.messages = True
client = discord.Client(intents=intents)
``` (fyi, the reson it works in vscode is likely because you're running a different version on `discord.py`, as it recently updated from `1.7` to `2.0`)

[latent nest]

yes indeed
thank you for looking at this

it was hard finding it out cause on the stackoverflow post i did what the first reply said which didnt include intents.messages = True
so after 8 hours of trying to make it work on heroku then on my rpi i went back on it and followed the second reply
then it said something weird about privilegeIntentsRequired
so in dev portal i enabled everything for the bot
now it works

[tired schooner]

I'm looking for something I connect my Raspberrry Pi to that works like a garage door
so I need a receiver from some Hz I send with some kind of controller with a button
what am I looking for?
use case:
If the button pressed on controller, run script on Raspberry Pi

[devout shell]

can't find much concrete info on this online. how does non volatile memory stay consistent and stored in the same place without electrical supply from an outlet? is there a specific battery that supplies to NVM?

[rancid lake]

Hi guys, i'm trying to create a Esp32 robot, that is controled by a self hosted websocket server, but I can't find a easy way to create the websocket server. Does anyone can give me a clue?

[wild wren]

how would you find a good-priced rpi

[rancid lake]

I didn't understood, is that a general question?

[wild wren]

yeah kind of

[rancid lake]

I think that are similar products like orange pie, but I can't vow about it's quality

for what do you need a rpi?

[wild wren]

home server stuff lol

(and maybe a mc server)

[rancid lake]

got it, yeah I don't know

[plush jacinth]

how microcontrollers work after it leaves the factory?

[versed vigil]

I’m new to micro controllers and have just bought a raspberry pi pico how do I code them?

Btw I use visual studio code as ide

[earnest fog]

#microcontrollers message

[solar junco]

I’m with you on that new new

[wooden swift]

I need some help installing Ninja IDE on my raspberry pi 4. can any1 help me?

[versed vigil]

I’m on thonny and when I try to soft reboot it reads :

Syntax error: invalid syntax
Micropython v1.19.1 on 2022-08-31; raspberry pi Pico with Rp2040

[gentle vapor]

what are you trying ? what is the action you're doing ? what is your code ? is there more in the output ?

[versed vigil]

I fixed it

Does input() work on thonny

[hot raven]

They sell reset buttons on pimoroni haha

[gentle vapor]

note that the captain risetti is not compatible with the W 😉

I just shove a button in the holes

[latent nest]

howdy, i use my raspberry pi 3 to host a discord bot, i also plan on hosting a website with it
i was wondering if getting an external ssd for it would be beneficial

[tranquil steeple]

Hey, i have a Raspberry Pi at home and i would like to do some Projects on it. I realised, that the usual prgramming language is Python but i'm programming c and c++ since 1 year of studying. So my question is, are there any reasons or advantages for Python to program on a Raspberry Pi or can I also use C++? If it doesen't matter, why is then Python recommended everywhere?

Sorry for my english, i'm german

[rare knot]

python gets pushed alongside raspberry pis a lot just based on them kind of getting their start as educational devices. you can definitely compile and run C and C++ on them just fine (as most of the OS already does)

pi isn't really a microcontroller, it's a full-fledged 64-bit computer. microcontroller to me is something like arduino

[tranquil steeple]

Okay, then I'll use C++. Thank you!😁👍

[rare knot]

i think there are some python libraries out there to do low level stuff on pi like using GPIO pins directly

so if you're wanting to interface with electronics in hardware then that could be useful

if you just want to run a server or something, then use any language you like

[ashen hollow]

I wish microbit had more GPIO Pins

[quartz cypress]

Hey guys, I'm trying to get some text displayed on a small oled ( 0.96" w=128 h=28) using thonny, and I have the ssd1306.py file installed on the pico. I have followed numerous tutorials to no avail. If anyone could help it would be greatly appreciated. I can share code/pinout layout. Just don't want to post it rn and clog up the channel.

[wraith wren]

how do i shove python into an arduino mini used in a model rocket flight computer

[gentle vapor]

you don't

there's a pinned message summarizing options to use python on microcontrollers

[stark owl]

Hi, i have a project written for the rpi picow and the script works, but i then started refactoring a bit and putting it in different folders and i created packages. but my main does not find the packages unless i change my 'sys.path'. is there a standard way with micropython to tell how 'sys.path' should look for the entire runtime

[gentle vapor]

you have folders with packages inside or folders that are packages ?
Can you show your files organization and your code ?
If you just want to organize modules by moving them into directories you would have to add those to the path yeah, like with regular python.

• you can treat the folders like packages and import folder.module
• you can also use module = __import__("/folder/module")
  or to automatically add folders to the path you would have to use os.listdir() and filter out the files and the packages that are not supposed to be organizing folders (though I suppose the point is that you put everything in subfolders)

[stark owl]

is this something i need to do in my script or on my micropython runtime?
project structure looks like this

-docs
-README.md
-setup.py
-.gitignore
-main.py
-src
--/weather
--/--/__init__.py
--/--/program.py
--/--/bme680.py```

[gentle vapor]

so something like

import sys
sys.path.append("src")
import weather.program
etc.

[stark owl]

yeah, that works, but then i need to include it in every file? or will it work if i only do this within main.py?

[stark owl]

os.path is not implemented in micropython 😄

[spiral sandal]

i think they meant import sys; sys.path.append

[gentle vapor]

my bad sys.path !!!

you only need to do it from main, or even I think boot.py, it should stick

[stark owl]

ok, makes sense. basically i got a step further by including src as part of the package name

so if i would be able to add it, i could use proper package names

[marsh pasture]

is someone here expert in arduino if yes PLEASE help me in DM

[thin wyvern]

any idea why i cant use this func to convert a byte array in micropython?(@ me if you respond) ```py
def main(arr):
x = bytearray.fromhex(arr.hex())
return (x[8] * 256) + x[9] * 1

[gentle vapor]

Micropython doesn't include many convenience functions for lack of space, you can use other methods to do it (there is int.to_bytes and from_bytes)
what is arr ? are you converting it to string to convert it back ? is it some type of array of numbers ? there should be a more direct method.
If you really need to convert a hex string you could use int(x, 16) and to_bytes (and convert to bytearray if needed)

>>> string = "0000123465DEADBEEF"
>>> val = int(string, 16)
>>> val.to_bytes(len(string)//2, 'big')
b'\x00\x00\x01\x02\x03\xde\xad\xbe\xef'
>>> bytearray(_)
bytearray(b'\x00\x00\x01\x02\x03\xde\xad\xbe\xef')

or loop on it:

>>> bytearray(int(string[x:x+2], 16) for x in range(0, len(string), 2))
bytearray(b'\x00\x00\x01\x02\x03\xde\xad\xbe\xef')

[thin wyvern]

i was able to get it i just had to convert the byte array to a floting point value

[final knot]

Does anyone know if i can somehow program an arduino with python?

[hallow igloo]

I'm new to understanding boards
which aruidno pins can be used to simulate artificial touch , on a touchscreen device?

[gentle vapor]

see the pinned message

[gentle vapor]

you want to simulate touch on a phone or tablet ?

you would need a device capable of USB HID to simulate a table or mouse, connected by USB, which starts with the 32U4, or bigger chips like SAMD21 or RP2040 (a RPI pico would be a good choice)

[hallow igloo]

i meant at hardware level
like physical touch, with one conductor wire / metal strip

like a stylus,
but in this case, the wire / metal strip will be in contact, until given the output (from microcontroller) it shouldn't work

[dim holly]

you can read the com port data from the arduino using python

[west palm]

Hey I want to send a UDP message from a SPS and convert that into a CAN message anybody can help me or give m a Idea how to realize it?

[zenith niche]

What's a good component/ way to get live data from a GPS module into a python script? I'm confused by all the options of GPS modules few of which plug into USB. Should I look at getting some kind of USB / UART converter for one of them? Or can they plug into USB directly?

Sorry if this is a dumb question I've just never done this before and no idea where to ask

[gentle vapor]

there's GPS solutions with a USB-UART chip on them, but if you want a wider choice a UBS-to-UART device like this one should be fine and let you use GPS libraries transparently https://www.adafruit.com/product/5335

[zenith niche]

Tyvm. I'm not in a country where I can get that posted cheaply and am ideally after a plug and play solution with no soldering. I'm confused at all the boards and functionalities. Mind me asking if this would suit? It seems to have USB to UART but I'm unsure, and are there other functionalities I should be looking for (eg. power, power protection, driver issues)? https://www.aliexpress.com/item/4000120687489.html

[hallow igloo]

how i get started with microcontrollers in python

i have experience using Arduino

[gentle vapor]

yeah there are drivers you might need to install depending on your OS, and be careful when connecting the pins to match the power requirement of the GPS module (don't connect 5V to a 3V device)

[gentle vapor]

there's a pinned message mentioning different ways to use microcontroller boards with python, and references, are you looking for something in particular ?

I would start with a Circuitpython board but I'm biased 😉
https://circuitpython.org/

[hallow igloo]

yes, i would like to know which board should i buy and is there any is any special library i need to use for working on the board

[devout mantle]

Pi Picos are pretty cheap

[gentle vapor]

there are boards with different sensors installed on them, with or without a screen, that can be used to have something to start with immediately. If you have some stuff already (breadboards, buttons, displays, sensors...) you can use them with a simpler starter board like the Rapsberry Pico (though watchout, these are pretty much only 3.3V boards)

yep it's pretty much the go-to these days

especially now that it has a wifi version (available on Micropython, in the works in Circuitpython)

I still like my ESP32-** boards with 2MB+ of RAM 😉

[zenith niche]

ah ok cool. So could I hook it up to this and we'll be good? https://www.aliexpress.com/item/1005001635722164.html

[gentle vapor]

make sure that you can get some driver software or datasheet, you don't want to discover that you don't know how to use it once you get it

[devout mantle]

But that's the fun part

Scanning all addresses to try to figure out how it does without docs

[zenith niche]

Yeah I mean... I just want a good GPS signal into a python script in the easiest way possible lol

[gentle vapor]

some serial GPS modules just spout GPS data once they are running, others you might need to send commands to configure it and stuff

[zenith niche]

Hey Raspberry Pis are sold out everywhere and are only available for like $300 in aftermarket. Any advice for making a cheap compact thing that only needs to run a normal .py and output to a display?

[gentle vapor]

depends, I would use a microcontroller if it can do what you need, but interfacing with an HDMI display is another story

other than that I don't know much about alternatives to the Pi

[devout mantle]

Depending on your geographic location you have some options to get a pi. Restocks are happening regularly and they've done a good job with antiscalping. There's some websites that track restocks and can send you alerts.

With the antibotting measures; it means they sell out in hours, not minutes. So it's very easy to get one at MSRP with a restock notification.

[olive bear]

my startup is having to use cheap pcs as a replacement

[gentle vapor]

oooffff

[spiral sandal]

use an old tablet ?

[hollow marten]

I've used Orange Pi's (China / AliExpress) which appear to still be in stock if you can wait the delivery times. Just go to aliexpress.us and search 'orange pi' for diff models. $6 to $75. (and orangepi.org for details)

[spark harbor]

Hey all, I am having some trouble mapping joystick input to a L298N motor controller. I need simple 'digital proportional control' on 2 axis of a joystick to replace my 'on-off' motor controller. I have been using (the only one I can find) a tutorial that polls the ADC pin, subtracts a number(32k) and outputs the pwm value to the correct direction pin based on a <> value with a really nice == stop value as well. I have 2 problems. first and most important, the RPPico locks up 100% when I start to go full throttle on the joystick. The shell screen in Thonny says the RP is locked and Ctr+C to recover.. but I have to unplug. It will work a little, and if I don't go full throttle, it works for a bit. Second, the method of getting the output value is not equal on both sides of the motion. I.E. the values are higher on one side than the other of center, so the motors spin faster forward than reverse, relative to wiring... I hope this explains my issues in such a way that is clear and compliant with the community. 🙂 FWIW, I am still learning, mostly hacking, grateful for any help.

Clarification... the pico locks up 100% when the L298N is powered up and spinning a motor. Otherwise it will read input without locking up without issue, it seems

If the L298N is not powered up, but connected, the Pico does not lockup reading inputs... I.E. the circuit does not seem to effect this, but powering up the L298N does seem to cause problems.

Once the pico is locked, it will not 'recover' if I power down the L289N. It stays locked until I power down the Pico itself.

[zenith niche]

Yeah? I did some cursory research on them and some people said they're quite buggy. Have you had any issues running basic .py scripts? I don't need anything particularly fast but do want frustration free

[elfin heart]

hey guys, I'm a micropython trainee. I have experience with C/C++ on different microcontrollers, also RTOS on ESP32, but I've never faced the same issue before. I've written a simple python code blinking 6 leds on a nodeMCU style ESP32 dev board. Here is the code:

from machine import Pin
import time

leds = [
    Pin(19, Pin.OUT, value=0),
    Pin(18, Pin.OUT, value=0),
    Pin( 5, Pin.OUT, value=0),
    Pin(17, Pin.OUT, value=0),
    Pin(16, Pin.OUT, value=0),
    Pin( 4, Pin.OUT, value=0),
    Pin( 0, Pin.OUT, value=0)]

for i in range(3):
    for led in leds[::-1]:
        led.value(1)
        time.sleep(0.2)
    for led in leds:
        led.value(0)
        time.sleep(0.2)

So not a big deal. I've copied this main.py to the board, checked if it works on USB power too separated from my laptop. It works well. But I cannot connect the ESP32 back to my linux. The DMESG cannot see the device at all. I've tried to push the Boot and EN buttons during the connection too without any luck. Can you help me how can I connect a device which running a Python code?

What I've found, is that the Pin 0 definition in the array is not necessary. Is this killing the UART connection? What do you think?

[stark yoke]

does anyone have any experience with pyfirmata for an arduino uno and pir sensors

[shell blade]

How to recieve the struct in arduino? Im sending it from python using "arduino.write(struct.pack('>ff',111.32, 120.10))". Im not sure how I can do that

[dark onyx]

Hey

I think one possible error could be if you are using illegal pints as output

The ones you are using seems generally okay, but check your specific board.

From what i can tell, GPIO0, 4 and 5 are involved in boot and connecting things to these pins can cause problems.

https://randomnerdtutorials.com/esp32-pinout-reference-gpios/

[dusty ferry]

How can i send this type of request in micropython

import requests 
 from time import sleep 
  
 url = "https://latest-stock-price.p.rapidapi.com/price" 
  
 querystring = {"Indices":"NIFTY 500","Identifier":"SBINEQN,TRIDENTEQN,ALOKINDSBEN,TATACHEMEQN,TATAPOWEREQN,STLTECHEQN,VEDLEQN,DEEPAKNTREQN,RELIANCEEQN ,INFYEQN ,IEXEQN ,UNOMINDAEQN ,IRCTCEQN,CDSLEQN"} 
  
 headers = { 
     "X-RapidAPI-Key": "xxxxxxxxxxxxxxxxxxxxxxxxxxx", 
     "X-RapidAPI-Host": "latest-stock-price.p.rapidapi.com" 
 } 

response = requests.request("GET", url, headers=headers, params=querystring)

[dusty ferry]

^^^^^

!e

[hasty zealot]

Missing required argument

code

Command Help

!eval [python_version] <code, ...>
Can also use: e

Run Python code and get the results.

This command supports multiple lines of code, including code wrapped inside a formatted code block. Code can be re-evaluated by editing the original message within 10 seconds and clicking the reaction that subsequently appears.

If multiple codeblocks are in a message, all of them will be joined and evaluated, ignoring the text outside of them.

By default your code is run on Python's 3.11 beta release, to assist with testing. If you run into issues related to this Python version, you can request the bot to use Python 3.10 by specifying the python_version arg and setting it to 3.10.

We've done our best to make this sandboxed, but do let us know if you manage to find an issue with it!

[dusty ferry]

!e import requests
from time import sleep

url = "https://latest-stock-price.p.rapidapi.com/price"

querystring = {"Indices":"NIFTY 500","Identifier":"SBINEQN,TRIDENTEQN,ALOKINDSBEN,TATACHEMEQN,TATAPOWEREQN,STLTECHEQN,VEDLEQN,DEEPAKNTREQN,RELIANCEEQN ,INFYEQN ,IEXEQN ,UNOMINDAEQN ,IRCTCEQN,CDSLEQN"}

headers = {
    "X-RapidAPI-Key": "xxxxxxxxxxxxxxxxxxxxxxxxxxx",
    "X-RapidAPI-Host": "latest-stock-price.p.rapidapi.com"
}
 response = requests.request("GET", url, headers=headers, params=querystring)
print(response.json())

[hasty zealot]

@dusty ferry :x: Your 3.11 eval job has completed with return code 1.

001 |   File "<string>", line 1
002 |     import requests 
003 |           ^
004 | SyntaxError: invalid non-printable character U+00A0

[dusty ferry]

!e import requests
from time import sleep

url = "https://latest-stock-price.p.rapidapi.com/price"

querystring = {"Indices":"NIFTY 500","Identifier":"SBINEQN,TRIDENTEQN,ALOKINDSBEN,TATACHEMEQN,TATAPOWEREQN,STLTECHEQN,VEDLEQN,DEEPAKNTREQN,RELIANCEEQN ,INFYEQN ,IEXEQN ,UNOMINDAEQN ,IRCTCEQN,CDSLEQN"}

headers = {
    "X-RapidAPI-Key": "xxxxxxxxxxxxxxxxxxxxxxxxxxx",
    "X-RapidAPI-Host": "latest-stock-price.p.rapidapi.com"
}
 response = requests.request("GET", url, headers=headers, params=querystring)
print(response.json())

ah

[hasty zealot]

@dusty ferry :x: Your 3.10 eval job has completed with return code 1.

001 |   File "<string>", line 1
002 |     import requests 
003 |           ^
004 | SyntaxError: invalid non-printable character U+00A0

[dusty ferry]

ok

[shell blade]

heyy
when I did

if (Serial.available() > 0) {
    // read the incoming byte:
    incomingByte = Serial.read();

    // say what you got:
    Serial.println(incomingByte);
 }

it sends me some very random stuff and im sending

    arduino.write(struct.pack('>ff',11.11, 12.12))

    x=arduino.readline()
    print(x) 

and the code after running some time from being VERY fast goes to a print per few seconds

im using PySerial to write from python to arduino

[dusty ferry]

how to implement this using urequest in micropython

import requests 
from time import sleep 
  
url = "https://latest-stock-price.p.rapidapi.com/price" 
  
 querystring = {"Indices":"NIFTY 500","Identifier":"SBINEQN"} 
  
 headers = { 
     "X-RapidAPI-Key": "xxxxxxxxxxxxxxxxxxxxxxxxxxx", 
     "X-RapidAPI-Host": "latest-stock-price.p.rapidapi.com" 
 }
 response = requests.request("GET", url, headers=headers, params=querystring)

in urequest i am not able to send parameters

[boreal ocean]

Hey, all. I'm curious if there's a way to detect if a MicroPython project on RP2 hardware I'm working on is connected to a computer with a REPL open or not. I would like debugging info to be printed if the REPL is open but not if the device is connected to a battery or dumb charger to save on cycles and current. Is this already done for me or is there some library support for checking? I haven't had success digging through the code yet.

[dusty ferry]

help please ^^^^^^

[quick spoke]

What ide do you all use?

I'm just wanting something barebones for an esp8266 that allows me to actually include various local files. The vscode extension was nice, but it's kind of fickle and I'm looking for something more stable and "just for micropython"

[rigid tangle]

Hi, all. I want to know how do you calculate how much space/memory in a microcontroller will be used up by reading in a certain value from a sensor. Example, I have an ATmega16 microcontroller and I am interfacing an LM35 temperature sensor. Reading takes place in the intervals of 5 minutes. How do i find out how much memory will be used up in the mcu?. I hope I am making sense on this one.

[spiral sandal]

ask terminal cursor pos with vt100 cmd ^[6n on serial line, if no response then there's no terminal connected ( or a bad one is )

[boreal ocean]

Thanks!
Would that would be something along the lines of:
UART.write(“\033[6n”)

then getting the response with
UART.readinto(response)

And checking that response matches the expected response control sequence, etc?

[sand bay]

does any one know about the progress of micropython on k64f micro controllers?

[gentle vapor]

Thonny is written for Micropython, give it a try

[quick spoke]

I will!

[tired schooner]

rpi question:
I have an RPI and want to use PiHole alongside other stuff ( like hosting a dpy bot). Should I just run this in a docker container in order to not “waste” my whole rpi on running PiHole?

[vapid elk]

Yeah, sure

[tired schooner]

Is this the intended way of doing it? Do you have experience in running docker containers on a rpi or similar?

[vapid elk]

Yeah, I run my servers' apps under Docker, that's not the right channel though #unix

[viral saddle]

Pico W + Micropython people: Anyone found machine.lightsleep/deepsleep unreliable?

[sonic lynx]

@gentle vapor Hi sorry for taking your time. Im trying to find something like a 3 days. I'm trying to create programmable macro mouse or something like that before that I was using Arduino İde for coding rasberry pi pico now i wanna use circuit python for this purpose, i was using serial module in Arduino code. I just tried to use UART, Busio something first of all there is no board.TX and board.RX so i used GP0 and GP1 i dont know where is wrong in Arduino i didint do anything like that do you know any source i can read and learn how to this job, sorry for bad english.

[gentle vapor]

Yes on the pico since the board does not define a default UART, you have to use the names of the pins that you are using. CP bases the pin names and defaults on the silkscreen. No "TX/RX" on the silkscreen, means no default UART in CP.
There's a guide dedicated to the pico https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython
The docs for busio.UART https://docs.circuitpython.org/en/latest/shared-bindings/busio/index.html#busio.UART
And basically you want to test uart.in_waiting to know when you need to read, or read with a timeout, or readline if you don't mind blocking, and write at your leisure.
Note that support for the picow 🥧 🐮 is not finished, though wifi has started being implemented.
The Adafruit discord and help-with-circuitpython channel is a good place to ask questions too

[next charm]

Hey guys

can u suggest to me a good OS for debugging Arduino, ESP32, ESP8266, and Rasberry Pi Pico Wireless?

[spiral sandal]

i fear it's a matter of taste, why not try them yourself ?

[quasi ether]

contiki

[silk owl]

How do I use a 16x4 LCD with Raspberry pi in micropython?

[devout mantle]

Depends on the lcd. There is no "one way"

Did the lcd come with a data sheet?

[sand bay]

First you have to wire up properly. Than find some source code which is used by a simular lcd.

[timber ferry]

Raspberry pi zero 2w
Or
Raspberry pi 3b

Need advice

[sand bay]

What are you going to use for?

[bitter depot]

Hi I am trying to use a servo with my raspberry pi

[bitter depot]

thats the code but its not working

[barren ether]

is there anybody ever used liteX for FPGA

I really need some guidance

I want to start FPGA, I don't have windows system, only got virtual tools like docker / multipass, I don't have physical single-chip-computer, it seems like liteX is a good tool to me

correct me if i was wrong, please

[alpine vessel]

is there any reason to use little over big endian (or vice versa), other than convention or a cointoss?
This is in regards to receiving data over serial, mainly uint values.

[errant wigeon]

To my knowledge, if your channel is particularly noisy in a non-gaussian fashion, little vs big endian can make a difference. But in most cases as long as both sides of the communication protocol are on the same page it shouldn't really make a difference

[torn yarrow]

not sure where to put this question but this seems like a fitting channel. anyways, does anyone know how python represents binary numbers? if i take -1 for example, as a 4 bit value, in two's complement that would be like 1111, however, if i view the python equivalent in binary (using string binary formater that is) i basically see, -0001, so is this how it just shows a negative number while internally it uses two's complement?

[gentle vapor]

that's an implementation detail but an interesting question, see python has arbitrary length integers, 2's complement wouldn't enter into that.

python objects are C structs, ints seem to be implemented as an array with a size field next to it, the sign of the size field being used to code the sign of the int

[torn yarrow]

oh i see. thanks

[earnest hound]

Anyone ever used a clearcore motor controller?

[torn yarrow]

anyone ever tried implementing a fixed point system? i'm basically confused about multiplying fixed point numbers. like say i have two 6 bit balues, i.e aaaa.aa, and bbbb.bb, if i multiply them, i'll a 12 bit result, i.e cccccc cccccc, my question is where does the fractional point shift to here?

[wooden plaza]

if im reading your question right a fixed point system is just representing a fractional number in an address, in your case two six bit integers wouldnt you just get a 12 bit with the last 4 being your fraction?

cccccccc.cccc

[torn yarrow]

thanks. it would also make sense to shift the result to the right in order to keep the original 2 fractional bit right?

[wooden plaza]

depends on what your after, also if you go to far in fix point like a 16 bit x 16 bit, all the microcontrollers i do are a max of 16 bit incorporate a scalling factor

whenever i do fix point all my numbers are in the form a/R

[torn yarrow]

i'm trying to do something like this on an FPGA.

to avoid growing buffer sizes, i.e 16x16 -> 32bit, 32x32-> 64 etc

[wooden plaza]

ooo yeah im with ya, i just use the baby microcontrollers and fuck around with them haha

never go that far

[torn yarrow]

i see

[torn yarrow]

by the way, do you know if it's possible to define a custom integer size in python? i know it has int16, int32, int64 etc. however I want to run simulation for like 18 bit or 24 etc

[wooden plaza]

nah dont think so 2 is just the base binary numeral, there is probably workarounds though

[hasty zealot]

Hey @native nacelle!

It looks like you tried to attach a Python file - please use a code-pasting service such as https://paste.pythondiscord.com

[native nacelle]

import pyautogui
import keyboard
import cv2 as cv
import time
pyautogui.FAILSAFE = False
while keyboard.is_pressed('q') == False:
target = pyautogui.locateCenterOnScreen('nur_eine_sache.png',confidence=0.91,grayscale=False)
print(target.x/2,target.y/2)
pyautogui.click(target.x/2,target.y/2)

if target == None:
  print('don\'t see')
  time.sleep(0.02)
else:
  pyautogui.click(target)
  time.sleep(0.02)

why dose it just wiggle in the to left corner of my screen ?

[torn yarrow]

there's a channel dedicated to user interfaces

[cursive anvil]

Is there a microcontroller alternative for the ESP32 (WiFi microncontroller) with 4 or more cores?

And preferrably something powerful enough to also play audio. A raspberry pi or other embedded computers are not really an option, talking about microcontrollers.

[haughty glen]

Hey guys, I'm trying to send the letter "A" through the serial port

import serial
with serial.Serial('COM5', 9600) as ser:
    ser.write('A')
    ser.close()

but I got this error: TypeError: unicode strings are not supported, please encode to bytes: 'A'
can someone help?

[torn yarrow]

convert a to a byte

[torn yarrow]

use 'A'.encode('utf_8')

more info here

https://stackoverflow.com/questions/40235855/python-convert-string-to-byte

[weak moth]

Does anyone else have a le potato?

[rigid tangle]

Hi all, does anyone have the code or tutorial resource for reading a DHT22 sensor on an ATmega32 mcu. Most of the resources am finding online are not working.

[errant wigeon]

https://learn.adafruit.com/dht/using-a-dhtxx-sensor

This is a helpful guide for connecting and interacting with it. If it doesn't help, are you sure your device works and is wired correctly? What code have you tried and what errors are you encountering?

[arctic grove]

It's more of a hardware thing: I am making a safe w RPi, Python, rotary encoder & an LCD. I'm making an escape room and one of the parts of the escape room is to open this safe. You enter digits by turning the rotary encoder, clicking it & entering a 4-digit code.

I have problems with coming with a GOOD solution on locking / unlocking the safe. I need a better & stronger lock system than the one I have right now. Right now, I'm using a servo motor to lock the door but it's not doing the job that well (It's not gangster / figher proof, lots of violent people in escape rooms). Anyone got some good ideas? I was thinking of something like an electric door lock but it's a bit too big I'm afraid.

[fair galleon]

hi, i wanted to ask about esp32, so basically i am in a rocket project with a group and i am assigned to code the microcontroller and we are gonna use esp32 which i have never used before but i have 2 years experience on arduino, i am good enough on it to code for a rocket, they said it wouldn't make a difference but i wanted to ask if there is a obvious difference between using arduino uno and esp32

i don't have much experience with all microcontrollers since i don't have interest mainly into them

[potent dove]

What python lib should help me to recieve information about when bios was installed/updated?

[frank yacht]

Hi folks! I wrote a command line utility to generate SVG diagrams for control register-style data formats. I've got it published on PyPi at https://pypi.org/project/regfmt/ and would appreciate folks to give it a try and provide feedback. Thanks!

[last void]

Not sure if this goes here

Has anyone programmed a drone with python? If so can you please tell me what drone you ordered

[runic compass]

I’m trying to communicate with bluetooth over uart, I have a pico on micropython and a waveshare pico-BLE, can someone tell me how it works or send me something to read?

[lunar zenith]

I'm trying to install adafruit-circuitpython-circuitpython-mcp3xxx as adafruit-circuitpython-mcp230xx (Asus Tinker Board) and I'm getting this error:

No matching distribution found for typing extensions~=4.0

Does anyone know how to solve?

[vital basalt]

absolutely not

with the right drivers and everything

it's essentially the same, no matter what microcontroller you're using

[fair galleon]

alright thank you so much!

as i said i don't have much info about microcontrollers so i didn't know they are much the same

[errant blaze]

Could someone take a look at #help-popcorn please? I'm attempting to write to a keyboard backlight HID device using pyhidapi, but I'm really new to this and don't really know where I'm going wrong 😅

[sick spruce]

hello guys anyone has idea about this
cv2.error: OpenCV(4.6.0) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'

[frank pendant]

Hey guys, I am currently in the middle of building some christmas gifts for my niece and nephew, a couple of 3d printed lights for each of them using neopixels. I currently have made a module with several different (simple for now) animations for the neopixels, most of them are built with for loops and use a lot of utime.sleep_ms for timing the animations. To make them run my test program currently just calls an animation inside a while True: loop. My goal is to use a couple of reed switches to make 3d printed "wands" to turn on and off the lights, and change the animations. I know a little bit about interrupts, not enough to say I am confident in using them, and dont know if interupts will work with for loops running inside a while True loop. I though about adding a check at the end of each loop in the animation to read button inputs, but feel this may be super inefficient (and maybe break the code I am using for the smooth rainbow transition effect). I'm am using esp8266 chips (I have about 30 esp12's laying around, and have others like pi picos available on hand) and trying to stick to micropython/python as it is where I am most comfortable (I can do it in c or arduino c , but am nowhere near as comfortable with either). Does anyone have a suggestion on the best way I should handle button input, and possibly if there is a better way I can do my animations besides utime.sleep for timing?

[gentle vapor]

MP supports asyncio, you can use that to read buttons during the sleeps and cancel an animation task to start another

but if you really have tight timing yeah use interrupts

[frank pendant]

Thank you. I'll do some reading into asyncio and see what I can make happen.

[karmic depot]

Hi everyone, Since 2 weeks I have been working on this project...And its finally done! Its a device that detects license plate in frame and gets U all details of the vehicle! New Ideas Welcome . Sharing the GitHub repo for code and documentation -> https://github.com/YashIndane/platefetcher

[tropic otter]

Hi, I want to program a raspberry pi pico using micropython and instead of using thonny id like to use VS code and the Pico-W-Go plugin. When I try to connect it automaticly uses COM6 but I want to change it to COM7. When I look in the general settings I see I can set it manually but when I do that it says tat the com-port is not configured, could anyone help? I am on windows 10

[gentle vapor]

isn't you board on COM6 ? does it not detect the board ?

[tropic otter]

No I checked inside the device manager on windows and it says COM7 and in thonny COM6 is something else aswell

[cloud magnet]

Hello, I come from the C++/Arduino framework to MicroPython and I have a question about the neopixel module.
https://docs.micropython.org/en/latest/esp8266/tutorial/neopixel.html
There is no brightness option?
The library I used with platformio was https://fastled.io/ which has brightness and I would like to dim my leds if possible..

[thin wyvern]

currently working on a project with a raspberry pi pico but i have surpassed the 256kb of memory it has and now need more is there anyway i can add to this or would i have to upgrade microcontrollers

[lavish belfry]

Hi

I am trying to send G code to an ESP32 with Bluetooth

I found a code for SPP communication upon which I could build, because I was able to send G code to my board with it, but it only works sometimes?? Like sometimes it compiles and runs and my stepper motor moves, but other times it just connects and that's it, no movement?

import socket
s = socket.socket(socket.AF_BLUETOOTH, socket.SOCK_STREAM, socket.BTPROTO_RFCOMM)
s.connect(('7C:9E:BD:30:86:82', 1))
#s.send(b'G91')
s.send(b'G1 Y100')
s.recv(1024)
b'world'
print("------------------------done-------------------------------")

Here's the code I am using

Can anyone advise me as to why this is happening?

[primal fog]

Hi, I'm new to python. i have a raspberry pi pico and i can't solve the problem:
I have a dis(distance) value and I can't work with it further in the program. marked in red.
please tag or DM

[gentle vapor]

it's a local variable in your function, if you want to use it outside, you can return it from the function and get it in the loop (preferably) or make it a global variable by declaring it global at the start of the function

def ultra():
    ...
    return dis

while True:
    dis = ultra()
    ...

[primal fog]

thenks

[fiery topaz]

Any ideas for beginner projects to really get a all around exposure?

[lavish belfry]

Hi, could anyone help me regarding Bluetooth sockets?

[bleak storm]

how is erasing some section in flash memory different than just setting bits there to 0?

[mental cove]

okay so basically memory storage devices like hard drives, ssds (and flash memory iirc) work similarly to books. the first page or so, there's a table of contents, and the rest is used to store actual data. so when the computer wants to grab certain info, it looks at the table of contents to see where that data is stored, then goes there and grabs it.

when you erase data, the computer generally doesn't actually erase it, it basically just marks the pages where the data is stored as empty in the table of contents, even tho, if you looked at the pages where the data used to be, there actually is data stored there.

that way, when you delete data, the computer only has to overwrite a little bit of data in the table of contents instead of overwriting a huge amount of the actual data

[mental cove]

think about how it might take hours for you to install a 100gb video game, but you can uninstall it pretty much instantaneously

[fading yacht]

let me guess.
You're on the ESP32?

[fading yacht]

Here is some stuff people usually do when getting their feet wet in arduino:
Project 1: Blinky lights. Just pin on, delay 500ms, pin off, delay 500ms, repeat.
Project 2: Read analog pins and print something with them back to the host PC. This enables you to read joypad sticks, raw sensors, etc and make you get the microcontroller talking back to the bigger computer.
Project 3: interface to i2C or SPI peripherals. This enables you to handle the many pheripheral boards available for humidity, pressure, motion, gyroscope, vibration, light sensor, capacitive touch.
Project 4: Redo blinky lights with timers and threading, doing other stuff at the same time (e.g. blink LED and print motion sensor data at the same time)
Project 5: Go wild! build a bunch of stuff. Or start trying out wireless technology. Bluetooth LE GATT (Generic Attribute) services, Wifi networking with TCP/UDP sockets...
Project 6: After feeling confident on coverage of the concepts needed, build your dream machine. Whatever you wanted but found too complicated at first.

if you're gonna play with just software, that is the standard way to go, with software "hello world" examples and ready-made modules.
But if you wanna get more hands-on and build your own boards, i recommend reading or taking a course on electronics and circuit layout.
There is a lot of cool stuff to learn on soldering, configuring Op-Amps for analog signals, wiring pins with pull-up resistors, laying out common-emitter transistor amplifiers, approximating analog voltages with PWM and low-pass circuits.... the list goes on.

Me, personally, i started out on arduino and went straight to the circuits, stuff like LED matrix multiplexer boards with 4017, PWM LED heartbeat, a botched attempt at a POV clock...

[whole holly]

hello

i am trying to make code for receipt in my shop

[storm wyvern]

Hi all, i'm building a little control panel for a 3d printer based on rpi2040 microcontroller running micropython.

Trying to wrap my head about best structure setup.

There is a main infinite loop that checks if any buttons have been pressed and if screen needs to update and if so, updates the screen. this part works well so far.

now, I'd like to periodically query the printer for status and the main loop runs way too fast for that. What's the correct way to set periodic tasks that work well with main infinite loop? Timers seem like they could sort of help with this.

Any chance someone could point me in the right direction?

[lavish belfry]

Yes. but I figured it out since, thank you! 🙂

[zenith niche]

I ended up ordering this GPS module + UART / USB thing as you recommended the other week and they've arrived and I've wired them like so (see pic). @gentle vapor @devout mantle

I'm on win10 and dunno how to get the feed of GPS signals into a .py. The closest I've got is:

import serial.tools.list_ports

ports = serial.tools.list_ports.comports()
for p in ports:
    print(p)
    print(p.device)

any advice how I can get this data? I don't know anything about serial controllers / UART and all the articles on python and GPS modules seem to use raspberri pis, not UARTs. Ideas?

[devout mantle]

If I recommended something last week I don't remember I was terribly sick and I don't remember everything I did

[zenith niche]

Ah, hope you're alright. The tldr is that I want to get GPS coordinates into a python script. It seemed the most practical route for this would be to get a GPS module https://www.aliexpress.com/item/1005001635722164.html
and a USB / UART module to interface with it https://www.aliexpress.com/item/4000120687489.html

I now have these and want to receive the stream of GPS coords this thing should be spitting out into a .py, but idk how

[devout mantle]

Yeah I'm all good thanks. I had Flu, RSV, pink eye, and a sinus infection all at once.

Don't have kids such that they are in three different schools all at once.

Then you get all the germs

[hollow violet]

hello

can somebody tell me how in install the "machine" package? .. for coding a esp with pinouts

i want to "import machine" .... and try to install it with pip install machine

the error is: "note: This error originates from a subprocess, and is likely not a problem with pip."

i install already some packages from the "visual studio installer" ... but still error 😦

[hollow violet]

how you install the machine package?

[remote elbow]

hello guys, i currently need help

this error is making me really mad cause its an access denied error

and im using raspberry pi pico

is there a possible way i can fix this?

[hallow igloo]

MicroPython is an implementation of the Python 3 programming language that is optimized to run on microcontrollers. It includes a small subset of the Python standard library

[heady dawn]

Hi everyone

I have a problem, can y’all check in #help-mango

[untold nacelle]

hey I'm using ros to do some stuff and I need to calculate the tranformation between two measurement systems of my drone and my home point, and I'm having some trouble finding the transformation function, could someone in here help me?

[hollow violet]

@untold nacelle i know somebody, maybe him can help with ROS

[tranquil robin]

Hey, I have an question:

If my microcontroller get an Input of a sensor.
Can I send this Input as ouput to the usb? If yes, do I need 2 programs, so one for microcontroller and another to handle the input of usb, or can I mix up python functions with micropython?

I want to do a remote controller for my pc

[gentle vapor]

Microcontrollers typically can talk with your PC through a serial port over USB, which does mean having some software on the PC (possibly in python or other). Note that the code on the controller can be minimal and just transmit what it gets and let the PC program do everything.
Some microcontrollers (like the Raspberry pico) can act as a HID device like a keyboard and send keyboard shortcuts to your PC for example, which will allow to trigger stuff via some automation software that might be easier to use than writing a serial client. Circuitpython has good HID support on by default.
"Ducky" scripts or "Bad USB" devices show how you can do many things by sending key presses, like open a terminal, type commands, launch applications, trigger menus etc.
There are also ways to connect a device to your PC that will allow reading sensors directly from code on the PC, using Circuitpython Blinka or Micropython. Devices like the MCP2221 and similar or the u2if firmware on the pico for example. In that case the whole code runs on the computer.

[tranquil robin]

Thanks

[fiery topaz]

Anyone know if possible to replace the switch on a “useless box “ setup with a simple sensor?

[humble kraken]

yes

[cyan kite]

I have an electric golf cart whose throttle uses a hall sensor to send signal for acceleration. i want to send that signal via arduino instead of the mechanical gas pedal/throttle.
Can anyone tell me which electronic device can mimic the waveform or properties of that hall sensor so that i can control it with Arduino?

[tired lintel]

you havent selected your device

[timber pendant]

Cool meteo...

[junior timber]

So ive been trying to use a joystick for a interface display to select a file but i need to use the joystick after.
My problem is that when i run the file from the oled menu the file launches but if i use the joystick in the file it will end the process and return to the oled menu.

Its a while true statement

Gotta go to bed tho ill look at replies later thanks in advance

[tacit egret]

from machine import Pin
import utime

counts = 0

buffer = 0

INPUT = machine.Pin(15, Pin.IN, Pin.PULL_DOWN)

def detect_press(irq):
    current = utime.ticks_ms()
    difference = utime.ticks_diff(current, buffer)
    if difference < 1000:
        print(f"Ignored button press: Time left for next press is {1000 - difference}ms")
    else:
        global counts, buffer
        counts += 1
        buffer = utime.ticks_ms()
        print(f"Button was pressed: {counts} time(s). Time since last {difference}ms")

INPUT.irq(trigger=Pin.IRQ_RISING, handler=detect_press)

Why does it give a syntax error and doesn't recognize the global?

On line 16

[junior timber]

can you give the returned error?

@tacit egret

[slate wyvern]

I have a 24 volt LED strip. Pretty bright (so current is fairly high). I want to control it from my computer through the USB port (make an API that I can call from Python within the computer). What hardware do I need? I am lost when it comes to hardware. 😦

[tacit egret]

Traceback (most recent call last):
  File "<stdin>", line 16, in detect_press
SyntaxError: identifier redefined as global

[gentle vapor]

as it says, you are declaring a variable as global after using it (buffer in this case)
in general put your global declarations at the top of the function

[tacit egret]

Ah thanks

[junior timber]

Oh my gosh i forgor

[remote elbow]

???

[crisp shadow]

do anyone know how to use the TouchPad on an ESP32-S2? All guides refer to from machine import TouchPad which seems to not exist in ESP32-S2

[graceful surge]

I use arduinos and relays

[slate wyvern]

Do you recommend any particular models? Its a shame to buy hardware and it isnt compatible or worse: magic smoke. Also, what can arduino do that rasberry pi or just a stadard computer's usb port not do?

[tacit egret]

Is this code only for pycom board or will it work on raspberry pi pico w too?

from machine import Pin
from machine import PWM
import time

# define frequency for each tone
E7 = 2637
F7 = 2794
C7 = 2093
G7 = 3136
G6 = 1568
E6 = 1319
A6 = 1760
B6 = 1976
AS6 = 1865
A7 = 3520
D7 = 2349

# set up pin PWM timer for output to buzzer or speaker
p2 = Pin("PXX")  # Pin Y2 with timer 8 Channel 2
tim = PWM(0, frequency=300)
ch = tim.channel(2, duty_cycle=0.5, pin=p2)#https://forum.pycom.io/topic/802/example-pwm-mariobros

mario = [E7, E7, 0, E7, 0, C7, E7, 0, G7, 0, 0, 0, G6, 0, 0, 0, C7, 0, 0, G6, 0, 0, E6, 0, 0, A6, 0, B6, 0, AS6, A6, 0, G6, E7, 0, G7, A7, 0, F7, G7, 0, E7, 0,C7, D7, B6, 0, 0, C7, 0, 0, G6, 0, 0, E6, 0, 0, A6, 0, B6, 0, AS6, A6, 0, G6, E7, 0, G7, A7, 0, F7, G7, 0, E7, 0,C7, D7, B6, 0, 0]

for i in mario:
    if i == 0:
        ch.duty_cycle(0)
    else:
        tim = PWM(0, frequency=i)
        ch.duty_cycle(0.5)

    time.sleep(0.15)

[river juniper]

❓

[frank mulch]

I'm just starting to play with my pico Pi W, and the 'getting started' doc is wrong.

it says the LED is pin 25, but that doesnt work. if you use pin 'LED' it does let you control the onboard LED, but why are the Docs so wrong?

the reason I am starting with the pico is that you can actually buy them, unlike most every other microcontroller

[zenith niche]

I ended up ordering this GPS module + UART / USB thing as this channel recommended the other week and idk how to read from it. I'm on Win10 but I don't understand how to interface with this device.

When I plug it in the Device Manager shows "CP2102 USB to UART Bridge Controller", but idk where to go from here. How can I use this to get a feed of GPS locations?

[gentle vapor]

it's correct for the pico, but not the pico W, what getting started doc are you reading ?

the pico W uses a few pins to communicate to the wifi module, and the LED is connected to the wifi module instead and controlled by it. In Micropython it's Pin("LED"), in Circuitpython it's board.LED.

[gentle vapor]

you want some serial software to read from the COM port, normally at 9600bps I think, and it should receive a stream of formatted messages which can be parsed to get the position when there's a fix.

import serial
port = serial.Serial("COM5", 9600)
while True:
    if port.in_waiting:
        print(port.read().decode("ascii"))

[zenith niche]

Beautiful tyvm. I don't know where to start with looking for software to read from the COM port... any ideas on where to begin or what to search for? This functionality definitely isn't already built into win10 somehow?

[gentle vapor]

there are software to read a serial port like Putty and TeraTerm, and I assume most programming environments will have a way to access a serial port like python. As for decoding the GPS I don't know.

[humble kraken]

pyserial is the python library to interact with a serial port

[humble kraken]

To start with, I think you're feeding 5V to the gps module when it's a 3.3V device... Need to read up more man. Hopefully it's resistant to that

https://www.u-blox.com/en/product/u-center

You want 22.07

That can talk to the gps through serial if it's all set up correctly

[zenith niche]

Oooh ... Shit. Any way to check whether I've fried it?

[humble kraken]

Usually they have a one pulse per second LED

[hollow violet]

hello

MICROPY_PY_URANDOM_EXTRA_FUNCS configuration option is enabled. ... how can i activate it?

[frank pendant]

Hey guys, looking for some advice or guidance here. I am building some custom gifts for my niece and nephew using esp8266's, neopixels for lighting effects, and a couple of reed switches. One reed switch toggles the lights on and off, and the other reed switch will cycle through a list of animations I've put together for the lights. I had tested the animations by importing them into my main.py file and calling each one individually. My issue is that the animations run in loops, so I need a way to monitor button presses, I was thinking about doing making my animation loops asyncio functions, and having another asyncio function for each button. But I'm not sure what the best approach would be to cycle through the animations. I had a thought of making a "controller" class that has a controller.animation value that stores the selected animation, and using something like exec(f'animations.{controler.animation}) inside an async function. Any suggestions on how to approach this?

[jovial bronze]

so this type of things works on Arduinos?

if so, do you guys recommend using Arduinos as a beginner

[gentle vapor]

well for one thing don't use exec that's just messing things up. Using asyncio for your animations, you can make your buttons stop the current animation by cancelling the matching task (and catching asyncio.CancelledError in the right place to exit cleanly). You can then start a new task with the selected animation.
To select an animation just put them in a list and have the buttons select an animation in the list with a current_animation position for example.

async def animation1():
    ...
...
animations = [animation1, animation2, ...]
current_animation = 0
asyncio.start_task(animations[current_animation]())

there's a MP library for async buttons too that might help, don't know if it fits in a ESP8266
https://github.com/peterhinch/micropython-async/blob/master/v3/docs/DRIVERS.md#4-interfacing-pushbuttons

[steel loom]

Hi, i need some help with Bluetooth and i thought this will be the best chat group that might be experienced with it.
I have a device that connects via BLE, sends data properly. 20 bytes chunks.
the device that fetches the data uses a debian OS, bluez, python-bleak. gets only 23 in mtu settings and misses some packets.
since it's using bluetooth 5+ (both devices) i figured it's possible to increase the MTU. but not sure how.
Is that a driver issue? bluez issue? Are there any other that are better? (ex: blueman?)

thanks.

[hallow igloo]

hey, i'm gonna get my hands on a microbit tomorrow, and i will flash micropython to it (i will flash a python script to it as well). the microbit will be plugged into my laptop, and i need a way to communicate with the laptop from the microbit (trigger some event or message the laptop can respond to, or execute a script on the laptop for example). i can either execute the python script standalone on the microbit's micropython, or i could connect to the microbit from the laptop via microrepl (a tool in pip i found that i managed to get working). is there some way i could do this?
(to clarify, i need to communicate from the microbit to my laptop when its plugged in, preferably using microrepl if you need a repl to do it)
thanks for any help

[gentle vapor]

it should show up as a serial port, anything on the PC that can communicate with serial will do it (in python on the PC you have pyserial for example)

[hallow igloo]

So how could I use this to communicate with the laptop from the microbit

I want to send a message of sorts to the laptop from the microbit

[humble kraken]

you can run a daemon on the laptop that always listens to the microbit's serial connection

[hallow igloo]

ok so just got a ques,
(new to microcontrollers)
is something like this possbile?
i make a robotic arm (3 axis)
connect the motors to arduino
and make a glove with 5 gyro sensor
and somehow use all these in combination to control the robotic hand?

so in short, can i use
3 servo motos + old smart band + esp8266 / esp32 + arduio + some gyro sensors + flex sensors
and make a robotic arm which can be controlled by different finger and hand gestures?

[hollow violet]

can anybody help me with a web server on the 8266 ?

i try it with socket ... but i not found a simple example 😦

[hallow igloo]

How would I do that (I'm on Linux mint btw, not windows, should have specified)? What would the Daemon listen for? How would I trigger those events from the microbit? Would I need the repl or could I use the micropython interpreter on the microbit standalone?

[frank pendant]

thanks for the feedback, been away from the computer due to work, I'm going to look into implementing a method like you mention, and will look into the async button library you mentioned. I have currently been using the ubutton library for micropython that uses async functions as well, but the library you posted looks a bit more friendly for this. Hopefully by the end of this week I can be 3d printing some "magic wands" to put embed magnets for the reed switches in.

[gentle vapor]

here is a very simple example, it listens to a fixed port and awaits for the board to print a line. You can then parse the line and do whatever you want with it.

import serial
import time
BOARD_PORT = "/dev/ttyACM0"
channel = serial.Serial(BOARD_PORT, 115200)
while True:
    data = channel.readline()
    print(data)

I personally like to use json to encode commands and data with a predefined format, easier to parse. You can also add retries and reconnects in case of errors when reading the serial port. And if you feel adventurous, use asyncio.

You can find the board's serial port automatically using pyserial's serial.tools.list_ports.comports

import serial.tools.list_ports
def get_serial_port():
    for port in serial.tools.list_ports.comports():
        print(port.device)
        print("    ", port.description)
        print("    ", port.serial_number)
        print("    ", port.vid, port.pid)
        # Vendor ID and Product ID for the USB chip of the Micro:Bit
        if port.pid == 516 and port.vid == 3368:
            return port.device
    return None
get_serial_port()

On the other side, the board's code just has to print lines, for example you can run that to test the code above.

import time
while True:
    for i in range(10):
        print(f"some value {i}")
        time.sleep(2)

[gentle vapor]

ah forget json the module is not available on the microbit. You don't need it anyway, space-separated lists, coma separated values and stuff like that are simple enough:

data = b"temperature:22.5"
# can cause an error if the format is incorrect
try:
    key, value = data.decode("utf8").split(":")
    value = float(value)
    print("Key: {0}, Value: {1:.2f}".format(key, value))
except ValueError:
    pass

prints:

Key: temperature, Value: 22.50

[hallow igloo]

anyone 🤔

[hallow igloo]

OMFG THANK YOU SO MUCH

EXACTLY WHAT I WANTED TO THE LETTER

Except...

Lol

But except, the laptop prints a b in front of it, and \r\n at the end (I know why the last part happens, but I don't know how to fix it, and I have no idea what the b bit is)

Also when I try to print a string on the microbit with f Infront of it, it errors

[gentle vapor]

yeah it doesn't support f-strings in that build, use .format instead

bytes are converted to strings with .decode("utf8") since MP uses utf8, and white spaces removed with .strip()
https://docs.python.org/3.10/library/stdtypes.html#binary-sequence-types-bytes-bytearray-memoryview

[hollow violet]

hello

i want to controll a lego motor

`from machine import Pin, PWM

""" nodemcu pins from the motor shield """
pin2 = Pin(4, Pin.OUT) # D2
pin4 = Pin(2, Pin.OUT) # D4

""" named after the L9110 h-bridge pins """
AIN1 = PWM(pin2, freq=750)
AIN2 = PWM(pin4, freq=750)

""" TODO: variable speed """
speed = 950

def stop_all():
for each in (AIN1, AIN2):
each.duty(0)

def backward():
AIN1.duty(0)
AIN2.duty(speed)
............`

the motor is very loud

and only turn backward ... not forward

can anyboard help me?

[heady belfry]

hi, I'm having trouble installing micropython on an ESP32-WROOM

[pine gazelle]

hello guys
im trying to do a selector in python, i mean i have a school project using a raspberry
and this raspberry has hat sense dispositive added
for ppl who know what is it, there is a joystick, so i want to use it to do a selector
for exemple when i push the joystick to the left an arrow pointing to the left will be displayed on the 8x8 screen, then to confirm the selection I must press the central button
someone could help me ? thanks
Actually i just need help for the selector , choose the direction and after press enter for confirm the selection

[tropic remnant]

Hey folks, anyone have some anecdotal insight on potentially taking a side micropython project to a production state? I've been working on a micropython side project that turned out better than I expected and I'm curious what the transition from prototype to consumer product looks like especially when it comes to micropython

[split belfry]

try doing AIN2.duty(-speed)

[supple locust]

Anyone have a good idea for a school project about microcontrollers using microbit, have an idea for a step counter with a calorie counter. It’s a secondary school project?

[hollow violet]

i order already a new motor driver ... i hope it coming soon

[hallow igloo]

anyone here uses esp32?
I need help for buying one
im confused lol

[half zodiac]

Yes, just buy any esp32

[tropic remnant]

Amazon has a bunch of different types

[hallow igloo]

😂lol
but I'm confused
what is use of psram?

[hallow igloo]

ik
digikey is good site to get it too
but there re bunch of models

[spark hull]

Is it possible to develop this on raspberry pi (i know they are nuked in availability and price is there some other soc equivalent to raspberry pi 4b or zero 2w?) https://flipperzero.one/

power efficientcy wouldnt be a problem bc i would use powerbank anyways

[spark hull]

like would it be difficult? i dont care about time nor money , i just want to learn how this works and create even more awesome stuff

[errant wigeon]

The flipper's a neat little device. Most of it's benefits are from how much is built into it, and how it has tolerance at multiple voltage levels. You could do some of it's features on a pi--a pi could be a mild logic analyzer (https://github.com/superzerg/logic-analyzer) but the pi can't do 5v logic out and shouldn't take 5v in on the pins, runs a risk of the kernel being slow and not keeping up with gpio changes (Maybe it can keep up--I've never tried pushing a pi to intercept signals), and lacks a lot of the hardware a flipper has built in. You could buy the add ons you need and use the pi with them, but that means you have to figure out how to get the pi to interface with the peripheral and use it in a flipper like environment. Those are really helpful things to learn in general, but it won't really be super easy, and you'd probably be left with only a fraction of the features at a time

[errant wigeon]

What kinds of features are you looking for?

[hallow igloo]

thx for help
i thought to buy the esp32-s3-n8r8
as it's in my budget raange
but problem is the shippinh charges are equal to prices of the board lol
im a beginner and thought that if im getting an esp32,i 'll get a decent one so if i need more speed and ram, i could use the same in future

but now i gotta reconsider to buy
shippinh import charges are insane here
1200 inr is the price
and shipping price is like 1600 inr 💀

[errant wigeon]

Do you plan on using arduino/c or micro or circuit python on it? And what do you want to do with the micro controller?

I mostly use the esp32-s2, but the s3 looks good. I don't know how stable circuit python is with it at the moment though, I seem to recall it has some quirks.
If you're interested in circuit python, here's a list of esp32 x boards that circuit python runs on: https://circuitpython.org/downloads?q=esp32, looks like there's a fair number of boards that are esp32-s3's as well so that's probably stable enough

[hallow igloo]

ik c, and py
so planning micropy and c for it
i also have arduino nano, which i bought and realised i could have got rasp pi pico instead
idk about projects, just a beginner wanting to fiddle around with the chips

yep my board
esp32-s3-n8r8 is displayed there

im thinking of s3 boards cause they got more sram and support for psram
and are way faster then s2 one's
and the price range does not have a huge diff

[errant wigeon]

Cool then I'd go with whatever you feel like/can budget for. Those all seem like fine choices and you've got enough background that you're not going to face too much of a technical challenge with one over another

[hallow igloo]

yep
but that fact that shipping charges are more than the chip price itself lmao
anyways thx

[steady briar]

not if you buy them by the hundreds or thousands 🙂

[half zodiac]

no idea, what's psram but a quick google search indicates that

pseudostatic (random-access) memory (PSRAM)

(1) A combinational form of a dynamic RAM that incorporates various refresh and control circuits on-chip (e.g., refresh address counter and multiplexer, interval timer, arbiter). These circuits allow the PSRAM operating characteristics to closely resemble those of an SRAM.

(2) A random-access memory whose internal structure is a dynamic memory with refresh control signals generated internally, in the standby mode, so that it can mimic the function of a static memory.

NOTE In practice, unlike so-called self-refresh DRAMs, PSRAMs have nonmultiplexed address lines and pinouts similar to those of SRAMs.

honestly, I have never used this so far

[hallow igloo]

ik
researched more and i chose the board i want
getting it to come to India, is like im gonna pay double the price of board
shipping + tax = nearly 2(price of board)
and i found someone selling same series boards in loval market, half the price of original board
im worried if the produc is genuine

[modern lantern]

which board are you buying? most esp32 and rpi pico boards that one gets from local market are fine.

[hallow igloo]

esp32-devketC-N8R8

it's 1200 inr + 1600 (shipping) + ~400 tax
and some local store is selling same "series" board at 500

the chip itself is 300+ INR, idk if the local shop is selling fake ones

[modern lantern]

local ones work fine. have been using them off and on.

[hasty zealot]

:incoming_envelope: :ok_hand: applied mute to @spiral ridge until <t:1670795489:f> (10 minutes) (reason: duplicates rule: sent 4 duplicated messages in 10s).

The <@&831776746206265384> have been alerted for review.

[white spade]

Hi, anyone have experience with using threading on recent micropython releases?
It seems they removed the allocate_lock function from the _thread library?

[spiral sandal]

but first why would you need threads ?

[white spade]

I'm migrating code from a different esp32 based microcontroller where we're already using threading.
We have performance requirements which resulted in us needing a second thread to handle incoming mqtt messages

[tacit egret]

Can somebody recommend me a good lcd which I can use with pycom lopy4 running micropython?

[echo flame]

ahh how do i put a python file into rpi pico

[arctic grove]

I got a problem with my RPI4+ but first 3 important remarks before you come with your solution

I don't have a screen & keyboard (no GUI)
I don't have an extra router (I'm in a student dorm, our network is protected with a website & a login)
The ethernet cable is not faulty, I tried with several new ethernet cables, I also tried different SD cards AND tried it on multiple RPI4's

I normally image an sd card with the RPI imager & a selfmade login, enabling SSH
Then I add a static IP in cmdline.txt AND I also make an ssh file on the sd card (just an empty ssh file, no extensions, ...)
Then remove the sd, plug it in the RPI4 and I can't connect with putty

I did those same steps before with the RPI3 model B and it all worked perfectly, anyone got any ideas? Is ethernet ssh with a static ip disabled on rpi4? What's going on here, help 😦

[arctic grove]

depends on how big your screen needs to be / what's the purpose? You can just buy a 16x2 lcd I guess

[unborn drift]

Hi all, I have recently started working on micropython for esp8266. I have erased and flashed the firmware in nodemcu. But when i go to putty and connect to it serial monitor it doesn't show any response for the input...what could I do to fix it?
Thanks in advance for every efforts put in.

[random patio]

Do all expression evaluations involve a write instruction to a register? For example a comparison will write 1 or 0 to a register. Is this a considered write instruction ?

[terse sable]

Hey, I don't know whether this is a stretch but I recently got ahold of an arduino-like microcontroller (ESP32-WROWER-E) with the following specs and was wondering if I could technically run an async websocket client on it:

240 MHz Dual Core Tensilica Xtensa 32-bit LX6
520 KB SRAM
128 KB ROM
8 MB SPI PSRAM
4 MB SPI Flash
24 GHz Wi-Fi - 802.11b/g/n

I've heard of micropython and come across a lib called micropython-async-websocket-client but I'm not sure if my microcontroller is capable of running an active websocket connection. I didn't want to force it to work too much and possibly damage it, hence I decided to ask here.

[gentle vapor]

yeah sure, micropython + ESP32 are good for that kind of uses, and that's a nice beefy module with plenty of ram and flash

[terse sable]

That's great, thank you!

[somber pagoda]

hi hi hi

[somber pagoda]

what model of raspberry pi should i use if im going to use HOG for it as human detection?

[hallow igloo]

Raspberry Pi 4

[ashen anvil]

Are you expecting devices at a reasonable cost any time soon? 😂
More stock available to supplier lead times which is approximately 18/09/23

[coarse spade]

hi

can anyone help me with my project (it's a easy one)

I need a cpp code that runs a 0-99 counter with two 7segments on atmega32 Proteus

[coarse spade]

if u have any source or anything that can help me with that pls tell me

[sweet veldt]

the founder of rpi foundation said by 2023 we should expect pre pandemic levels

that better be true

because i need at least 10 pi’s for home automation

ive been using bulky old recycled windows computers and its not going well

[south rover]

Are they TM1637's or raw modules?

Because the raw modules are a LOT fricking harder to work with and will probably need another power supply

[errant thistle]

Hey guys! Anyone have experience on web client?

[hallow igloo]

So I have this idea where I take a ESP32-CAM and connect it with a microsd card. I want to be able to come up with code that allows me to capture an image from the cam and then run it through an ML trained algorithm that I have. Does anyone have any ideas on where I can start or is this not feasible? The key is I don’t want real time ML detection but rather I just want something that saves a picture and then gets put through an algorithm automatically.

[sweet veldt]

I cant believe this, I am so desperate for a raspberry pi I flew to LA and am now driving to a micro centrr

[pure inlet]

That is desperate lol

Couldn’t fly into john Wayne?

[rose warren]

Hey there, I am struggling to run the machine import, it say the module is missing so I tried to pip install. But I get this error below. I tried this in python 3.11 and 3.8 along with pip 22.3.1 and 21.3.1. I installed vs python workload with optional native development tools. I tried to manually install some vs tools, pip installed setup tools. Am I missing something? I couldn't find any other package that I need to install.

[rose warren]

Also I cannot use Pico-Go since it has been removed from vscode marketplace and pymakr is not working at all. I need this for my school project so I would really appreciate any help

[thorn dragon]

FYI I just learned that there is firmware for the RPI PICO that allows a X86 PC to access all of the functionality of the PICO via USB in python https://github.com/execuc/u2if

[split hollow]

How can I use Python with ardiuno

[gentle vapor]

@errant wigeon we should think of updating the pinned message to include Arduino's official endorsement of Micropython with a link to:
https://docs.arduino.cc/micropython/

and maybe u2if (which is an alternative to firmata basically) since it is also supported in python (on its own or via Blinka)

[whole locust]

Hey guys, I'm new in this srvr
So, I am having a Nokia G-140W-F WiFi GPON router, and I want to install OpenWrt on it, but its not supported by OpenWrt, so can someone please tell me how to do that
I even have its serial access with 115200 bps
It has an ECONET MTK7526G SoC or direct name EN7526GT its Clock Freq is 900 MHz. It has 512 Mb of DRAM.
Its a MediaTek Soc, but afterward MediaTek was acquired by EcoNet.
It uses 12V 1.5 A Supply to Power itself
Its default Software Which is made by Nokia X Airtel is very poor, because even in its Serial Access I don't get root access, its login & password are forbidden idk where, and even when I got to know its login & password I was not able to get the root access, because the Password2 Algorithm was not working in the software.
Also I'm using MobaXTerm & Putty for Serial Interface

[strange flax]

Responded in #networks

[void condor]

I want to make an RFID read program with my Raspberry Pi. I would prefer it to be quite user friendly so would I be able to use a general usb RFID reader or would I need a specific one such as the PiicoDev module? Think this belongs here.

[errant wigeon]

That's a good idea, but I think it'll have to be its own pinned post because that message has just 3 characters of space left in it. I'll see if I can reword or just redo the pinned post tomorrow though. Thanks for bringing it up!

[whole locust]

!voice-verify

[peak lynx]

Hi there I have not worked with a rapi before but I have a project I want to do which requires the following things:

• wifi
• battery (needs to be mobile)
• several buttons
• a screen would be more convenient to use but I am not sure how difficult it is to make a decent GUI
• The whole contraption should be as small as possible

I have determined that the raspberry pi pico w would be the best starting point.

Note: I am aware most of these are much cheaper in shops other than amazon but I have an amazon voucher I would like to use

For the battery I have found two things I thought I could use:

• Battery supply designed for the raspberry pi pico https://www.amazon.de/dp/B091PKLTDB/?coliid=IL5BI2K3R9Y3W&colid=2CMD4LIMB5ZEH&psc=1&ref_=lv_ov_lig_dp_it but unfortunately quite big
• Independent Lithium battery https://www.amazon.de/dp/B08215B4KK/?coliid=I38ZK45CIPV3LG&colid=2CMD4LIMB5ZEH&psc=1&ref_=lv_ov_lig_dp_it not sure if that would work but it would be much smaller

For the screen I was something like this: https://www.amazon.de/dp/B092VVCBQP/?coliid=IZ26UB9Q29YAI&colid=2CMD4LIMB5ZEH&psc=1&ref_=lv_ov_lig_dp_it This would also have 4 buttons and one joystick so I wouldn't have to worry about more buttons. But how easy is it to make a decent menu on one of these? If I buy option 1 for the battery, will this even have room to be stuck onto the pi?

Please ping me if responding, thank you!

[spiral sandal]

for small as possible any esp32 + a screen supported by LVGL

and if your program is big : pick a model with added PSRAM

also the best combo screen+battery is definitevely any cheap tablet like the Q8 and display info from MCU via serial/bt/wifi

see https://github.com/ArminJo/Arduino-BlueDisplay to get the idea

[peak lynx]

Still more expensive than raspi + addons

[spiral sandal]

i don't think so a 1024x600 capacitive screen retail is already very expensive

q8 are usually under < 40$ and you get a decent battery with protection and a standard port for charging

[peak lynx]

Still my whole setup would cost me about 50€

Which is fine

I am also wondering if one pico could connect to 2 female ports on both sides

If so I‘ll be fine

xddx?

[toxic gust]

Gonna run a rust server on my raspberry pi

runs great on the pi

[dapper rock]

!cban 803120787711066153 racism

[hasty zealot]

:incoming_envelope: :ok_hand: applied ban to @limpid olive permanently.

[charred rune]

Yikes

[feral pendant]

Is it possible to code to an Arduino using Python?

Just had a cool project idea but I’m also curious to see if arduinos work in Python

[neon sand]

yes

[hallow igloo]

Hi everyone! i am an owner of orange pi 3 LTS, i am doing very well, however i can't figure out how to create a script to be able to command the activation of the cooling fan. the problem is really in the code and how should i use it... i have found so many guides on how to use it for raspberry but not how to use it on orange pi3lts. can anyone help me? Thank you very much
P.S. i use it as a home assistant server included in a docker.

[gentle vapor]

hi, here's a pinned message giving pointers to some of the options for python and microcontrollers

[frozen nebula]

Hey guys, happy new year! I was wondering, I tried out micropython with ESP32 but I used Thony to program, is there a better way? I'm asking bc in terms of micropython I am a beginner.

[hallow igloo]

what is the most common microcontroller board used with micropython ?

[gentle vapor]

🤷

the Raspberry Pi Foundation puts emphasis on MP on the pico, it's likely very popular

[verbal aspen]

does anyone here have any experience with circuit python?

[sly depot]

Is there anyone who can help me with building a devicetree for MFRC522(rfid scanner) to work with my RockPi 4 SE(same software as the 4B)?

[gentle vapor]

hi, if you are looking for help or info on CP, there's channels dedicated to it on the Adafruit discord (and many people)

[verbal aspen]

okay, cheers

[flat plinth]

Hi, trying to flash a bootloader to a nice!nano. I've installed adafruit-nrfutil but every time I give the command to flash the bootloader I get the following error:
*
"'adafruit-nrfutil' is not recognized as an internal or external command,
operable program or batch file."*

Following the instructions for flashing the bootloader over here: https://nicekeyboards.com/docs/nice-nano/troubleshooting/

[gentle vapor]

that means you need to install it (which you might have since that's in the instructions on that page ?) or setup your OS path to include the python-installed modules, which I don't know right now, but is a common question about python on windows

[zenith niche]

I'm interested in using python (micropython?) to toy with microcontrollers and idk what to order.

Could someone please tell me what the tldr is for what I should buy? An Arduino? Raspberry Pi?

Where's a good place for someone with basic python experience to start? Some beginner kit maybe?

[gentle vapor]

the Raspberry Pi Pico is a great start for the price, though there are better designed boards with more features (like a dang reset button) in my opinion. The pico W in particular is a great proposition for a wifi board (and bluetooth soon). It supports Arduino, Micropython and Circuitpython.
Now I am biased, but an Adafruit Feather like the RP2040 or the ESP32-S2 has a lot of options, between all the featherwings and the Stemma QT connector (for solderless breakout baords), so you can easily start small and add new stuff.
There's also a growing ecosystem of breakout and carrier boards for the pico.

[zenith niche]

Fantastic, ty. What is your preference bw pico w vs adadruit feather? Or what you'd recommend?

[gentle vapor]

I am also a fan of the Circuit Playground Bluefruit as starter boards with a bunch of stuff on it (10 RGB LEDs, buzzer, microphone, temperature and light sensors, gyroscope and accelerometer) https://www.adafruit.com/product/4333

though it's not a traditional shape that you can put on breadboard

do you have something that you'd want to do with it ? An idea of a project ? It's a good thing to look at existing projects and get inspired, that might give you an idea of what to start with.

[zenith niche]

Excellent, this looks really cool! Strange that it's circular. Is there something similarly versatile that can go on a breadboard?

[gentle vapor]

surprisingly I don't know of any, things that are more self-sufficient are less breadboard friendly I guess

there are also a lot of Arduino kits out there, I'm sure there are some for the pico, but I wouldn't know where to look

[supple moon]

Anyone know how to enable mDNS on a PICO W with micropython? Looking to connect to it as somehostname.local

[ivory creek]

how do I uninstall python modules in raspbian?

I tried with

sudo pip3 uninstall cv2```
but that gave

uninstall skipping as it is not installed```

[gentle vapor]

did you install it as sudo ? if not uninstall it without sudo.
also check that you are using the pip that matches your python (if you call a program with python something.py try python -m pip ...)

[restive raptor]

hi everyone

[hallow igloo]

pip3 install pyserial

https://pyserial.readthedocs.io/en/latest/

[restive raptor]

I'm stucked with a micropython project,
something fails when I connect o to aws iot via mqtt

WAIT, SOMETHING STRANGE HAPPENED

it magically worked....

thanks anyway

[gentle vapor]

you're welcome

[hallow igloo]

RaspberRy pi Is sold out in every store in the whole country 😦

[lean python]

I want to get into hobby electronics this year. I studied computer engineering back in college, and it's been two and a half years since then. Should I do projects on a Raspberry Pi or Arduino. And should I start with the standard models (RPi Model B or Arduino Uno) or something super small (Pico or Nano)
Also, what project should I start with? Make my own Useless Machine?

[hallow igloo]

The Raspberry Pi is a more powerful device, with more memory and processing power than an Arduino

arduino boards are simpler, more lightweight and designed for projects that involve interacting with sensors, actuators and other electronic devices

[hallow igloo]

It can help you to learn the basics of electronics, such as wiring and programming

so sure why not

i am referring to the Useless Macine^

[hallow igloo]

cheap micro controlers

list pls

[hallow igloo]

I want to develop a program that connects to an esp32 and through a tcp messages plays the code I want it to. Maybe from a file I upload through wifi or something. Does anyone know how?

[undone tulip]

hey everyone, i hope you all are healthy and happy, anyone have knowledge about robotics? anyone know any discord server or robotics community?

[full swan]

I'm wondering if there exists a button that works either over Bluetooth, WIFI, or a dongle for the raspberry pi 4. It doesn't need to do anything crazy I just need to be able to press the button once to tell a piece of code to stop running.

Flic is an option I have seen however it requires you to get their hub and it is also a little pricey. I have also seen IR solutions however the PI will be in another room about 20ft away.

[quartz lava]

IDK about the hub. Can get wireless remote control switches on Amazon for not much (and if you want to go diving on other sites even cheaper).

Hook the switch up to a GPIO, and follow the Interrupt tutorial https://roboticsbackend.com/raspberry-pi-gpio-interrupts-tutorial/ specifically the add_event_detect() section

[whole locust]

Yo Guys

[steep dune]

i found a robot dog at value village

missing a IR remote , ni-cad charger , did have a 12V nicad batt

$15 i had to get it

anybody do robot , AI , research ?

[zenith niche]

Ok I've finally got home and have gone through closet to find what I impulsively ordered but regrettably never used a few years ago: an arduino uno clone

Is it possible / practical to try installing micropython on this or better to save myself the hassle and just buy what you linked?

[gentle vapor]

the Uno doesn't run python, it requires a bigger chip

[zenith niche]

ok cool I think I'll just order that Circuit Playground Bluefruit low energy thing you linked

[knotty steppe]

Microcontrollers are so cool

[zenith niche]

Alright.. Now what? lol

[gentle vapor]

this for example:
https://learn.adafruit.com/circuitpython-made-easy-on-circuit-playground-express

base guide reference: https://learn.adafruit.com/adafruit-circuit-playground-bluefruit
many example projects like those that can inspire you and put you on a track to learn what it takes to make them
https://learn.adafruit.com/search?categoriesLvl0=Circuit%2520Playground&categoriesLvl1=Bluefruit

and if you have questions on Circuitpython or using the board, you can join the Adafruit discord https://adafru.it/discord

[zenith niche]

I'm going through this guide on how to get started and it recommends Mu, "as it has the serial console built right in". I don't understand what this means and I already quite like VS Code. Can I use VS Code for this with similar ease?

[gentle vapor]

when the board is connected to the computer, it shows up as a serial port, allowing to communicate data back and forth. When you access it with a serial tool (like putty) you can see the prints from your program and the errors so you know what went wrong, it's really useful for development.
there is a Circuitpython plugin for vscode, and you can also use vscode to edit the code, and use anything else to access the serial connection when you need to (including Mu why not).
but I will ask you to come to the adafruit discord for that kind of question, there's a lot of people who can help there, and you don't have to ping me 😉

[zenith niche]

great, thank you very much!

[cedar sapphire]

howdy amigos

After researching various options for building robots using Python, I came across Arduino and PyFirmata...

Now... i dont really know how to build robots

so, can anyone recommend me some resources? thank you

also I have been coding since june 2022

Although my progress in learning to code was slow due to work, I have gained a solid understanding of object-oriented programming, which I believe ||("maybe not")|| is sufficient for creating small-scale robotic projects

[spiral sandal]

this was very usefull to me for remote control https://github.com/ArminJo/Arduino-BlueDisplay and esp32 cam based solutions, when i'll have some time i'll study if https://pypi.org/project/pymata-aio/ can work with pygbag to use a universal webview for remote control

[bitter depot]

Hi I am trying to make a clock with a pi pico and a lcd every time I run it thorny it works perfectly shows the correct time and everything but when I save the script and plug it in again says the time is 00:00 can someone help me please

[spiral sandal]

do you have a battery to keep the rtc live on the pico ?

if not use maybe DS1307 usually there are some in arduino kits

[bitter depot]

No

Is it possible to do it without

[cedar sapphire]

ah ty

Are there any books or something similar too?

or should i just on this rc proj

_ i have zero knowledge of esp32 but... i will start learning abt this stuff_

[gentle vapor]

you need a source for the time, an external RTC (with a battery) is the usual solution, or if it was a pico W you could set the time from the network, there is no way for the board to know the time on its own.

[grizzled coral]

ok

ok

ok

[bitter depot]

I have a pico w as well is it easy to do it?

[humble kraken]

if you have wireless version, this can be easier, because you can just look up the correct time from the internet and then tell your pico to use that time for its internal RTC. If you re-sync it once a day it will be an extremely accurate clock

look up "{micro/circuit}python NTP"

[cedar sapphire]

@spiral sandal

[spiral sandal]

depends on what you want to do, but i experienced already that remote control is better since robotics can consumme a lot of computing power, so it is not realistic to embed everything on the bot

[steep dune]

im studying a , I-Cybie robot dog , its using 3 MCUs to juggle all the processes , looking for a schematic

[cedar sapphire]

right

[dusty ocean]

for "installing micropython" https://docs.micropython.org/en/latest/esp32/quickref.html#installing-micropython, shouldnt there be a pip install micropython or something like that

[spiral sandal]

on what operating system are you ?

[dusty ocean]

linux

[spiral sandal]

then you need to build it yourself

https://docs.micropython.org/en/latest/develop/gettingstarted.html#get-the-code

[dusty ocean]

basically there should be a way to potentially convert the py file to elf

[dusty ocean]

ah ok

👍

dont know how I missed that, thanks

[spiral sandal]

there's only one version that does not require buidling but it's experimental , it's a Wasi port ( it uses WebAssembly to be really cross platform can also run on web eg https://pmp-p.github.io/wasi/ )

that one could be installed with pip but it would be probably very slow

not even sure it could beat an esp32

[gentle vapor]

no, Micropython is installed on the microcontroller, not with pip, by following the getting started link. It's an interpreter that reads python files, not elf. Your python source files live on the microcontroller, you don't compile them (you can use mpy-cross to compile them to bytecode but that's not necessary unless you run out of flash or ram). You upload python files using Thonny or mpremote
https://docs.micropython.org/en/latest/reference/mpremote.html

you usually don't need to build Micropython, though it is not uncommon to add frozen libraries to the core or enable optional features and builtin modules. Binaries for Micropython are found here and flashed with esptool (on ESP32) https://micropython.org/download/

[spiral sandal]

files are always compiled, mpy-cross is required if you remove the onboard compiler to gain precious ram so just build it as you may need it, using interpreter on linux saves you a lot of time especially if not dealing with gpio but file/network/rpc stuff instead, so another reason to build it. You don't have to wear your board's flash if it is an esp it just can download code/bytecode via http and run it directly. Finally learning build process will make that nobody will force you to use default config ( which personnally i dislike ) for the firmware

also i've heard circuitpython is more beginner friendly

[terse star]

how to call to this def from source, python -m sounddevice, not from console?

[spiral sandal]

import sounddevice.__main__ maybe

[terse star]

i need to collect to DIC all devices on PC, and put this DICt to my function..... sounddevice.main > NO

I found lang import sounddevice as sd x = sd.query_devices() print(x)

[spiral sandal]

that's certainly can work but it is not the same as -m modulename which call the special __main__.py as and in your __main__ which is the name of current script module

just try python -m asyncio and you will see

[terse star]

asyncio REPL 3.10.9 (tags/v3.10.9:1dd9be6, Dec 6 2022, 20:01:21) [MSC v.1934 64 bit (AMD64)] on win32
Use "await" directly instead of "asyncio.run()".

anyway the question done

[terse star]

👍

[gray obsidian]

can anyone here be a mentor

i really wanna get started and if you do youd have one more person for any personal projects your working on

just add and or message me if you see this

[humble kraken]

i can help with stuff. my projects are kinda advanced tho. mostly i'm designing pcbs atm

[sly vigil]

I am just beginning with python and I was wondering how does one actually learn and get to memorize all the syntax in .py Its just allot

[humble kraken]

practice

https://www.youtube.com/watch?v=NtfbWkxJTHw

[hollow terrace]

any arduinos that can run on python?

[devout wharf]

Just idling for now, playing with the M5Stack core 2 and micro python 🙂

[gentle vapor]

see pinned message, and
https://docs.arduino.cc/learn/programming/arduino-and-python

[pine osprey]

Hey all! I am trying to make a pico macro board and im just barely starting tryna figure it out so im testing one button, but i cant seem to get it to work. on another note circuitpy didnt want to work in visual studio, i got an error when i tried to import digitalio that said "import "digitalio" could not be resolved pylance(reportMissingImports)" so i switched to thonny, i dont get this anymore but i do get this traceback error. I will post the code and my wiring below

also, curious if anyone has had any luck with twin duck payloads on a pico ducky! above question is more relevant, but im still curious

[gentle vapor]

your pins are not soldered, there's not gonna be any current going through

when you're in the REPL (>>>) you can hit ctrl-D to restart the code, and ctrl-C to stop it

[pine osprey]

ah, i thought as long as the metal was making contact it could create current my b

i will solder rn and update

also the led is not working on this pico and im unsure why but ima ignore that for now

new to this but learning as we go ty!!!!!!

[gentle vapor]

it doesn't light up ?

led = digitalio.DigitalInOut(board.LED)
led.switch_to_output(True)

[pine osprey]

OOOOO THANK U ITS WORKING NOW

why it not turn on when plug in tho

[gentle vapor]

while True:
    led.value = not led.value
    time.sleep(0.4)

[pine osprey]

while other pico does

[gentle vapor]

it doesn't turn on on boot in Circuitpython 7.3.3

it does in CP 8 (currently in release candidate)

(it blinks on boot to tell you that you can press reset to enter safe mode)

but then it's off, left to the user to control

there's no power LED on the pico

[pine osprey]

hmmm i have cicuitpython 7.3.3 on other one but i turned it into a picoducky so maybe the code is somewhere in all the code i copied

OHHHHH

u r so smart thank u

[gentle vapor]

ah picoducky does turn it on

[pine osprey]

im gonna go solder, i will update u on how it goes

[pine osprey]

yea

i mean the picoducky works fine

i was curious about using twinduck payloads on it tho

[gentle vapor]

well I work on Circuitpython and I do tech support for Adafruit, so I know some stuff about it 😉

I don't know what twinduck is though

[pine osprey]

just firmware

https://forums.hak5.org/topic/28162-firmware-introducing-twin-duck/

but some prebuilt payloads require it

[gentle vapor]

it uses like a different payload format ?

[pine osprey]

and normally people flash a rubberducky with it but ive seen iffy responses on how well it works with picoducky

[pine osprey]

i mean ,,, wdym

i think its still duckyscript

[gentle vapor]

ah

what's the difference then ?

I see that: https://github.com/dbisu/pico-ducky/issues/126

[pine osprey]

tbh not entirely sure, just was lookin at payloads that required it

[pine osprey]

yaai saw that lol

[gentle vapor]

if it's only that it only executes the payload when pressing a button, then pico ducky can do that.
What it cannot quite do in CP is hide that it's a keyboard and only activate it when pressing a button. It can enable or disable the keyboard, but that requires restarting the pico, so it's not seamless.

Triggered on CAPS/NUM/SCROLL LOCK
I think we can do that in CP

[pine osprey]

ahhhhh

tbh ill look into it more later, duckyscript stuff im usin rn is going okay

[gentle vapor]

(we can receive the caps lock report and do something from there)

[pine osprey]

OHHHHHH

OHHHHHHHHHH

I JUST GOT WHAT U MEANT

thats neat and i am going to try it but first i am dedicated to making this macro keyboard work

I MUST SOLDER tHANK U SO MUCH

[gentle vapor]

something like that (but better with edge detection and such)

while True:
    if keyboard.led_on(Keyboard.LED_CAPS_LOCK):
        # do the payload

[pine osprey]

also were 2pin tactile switches the right choice for what im trying to accomplish?

6x6

[pine osprey]

WOrD

im having a lot of fun with this thank u so much

[gentle vapor]

https://docs.circuitpython.org/projects/hid/en/latest/api.html#adafruit_hid.keyboard.Keyboard

[pine osprey]

love when ppl are smarter than me

[gentle vapor]

that's the adafruit_hid guide

[pine osprey]

OH COOOL

THANK U

[pine osprey]

hey frieND i have SOLDERED

but now something odd is happening

instead of it printing "button one pressed" when i press the button, its just spam printing that statement when i play the code

i have taken the button out entirely now

still does same thing

[gentle vapor]

yep because you are testing if the button is down, not if it went down

[pine osprey]

hmm... but the button isnt down

im following a tutorial tbh

https://www.youtube.com/watch?v=aEWptdD32iA

this guys

[gentle vapor]

have you changed the code from earlier ?

[pine osprey]

no, i copycatted his

but no i havnt changed it

hollup

[gentle vapor]

oh yeah it's quite basic, I would invite you to join the Adafruit discord, channel help-with-circuitpython, a lot of people knowledgeable on the subject https://adafru.it/discord

(depending on the time of day 😉 )

[pine osprey]

i will join rn!!!

im still confused on wym, how does it read button press

why is it saying button is pressed WHEN BUTtoNSnot in the breadboard

[pine osprey]

oop it said invite invalid :/

[gentle vapor]

it does ? weird

[pine osprey]

thank u also u dont have to help me BUT U HAVE BEEN HELPING ME A TON AND ITS GREAT im pretty new to this

[pine osprey]

OK RIGHT

makes me think it has to be my jumper wiring

oop

that auto disappeared

[gentle vapor]

ah can't post a real invite

[pine osprey]

OHHHH

[lost lion]

https://discord.gg/adafruit 👀

[pine osprey]

joined ty

[plush shale]

hello, i was redirected here for my silly question, what "board" could i use to control 6-7 electric motors with python code?

[floral spruce]

Any raspberry pi would do the trick (with motor controllers as well of course)

[plush shale]

the rpi would tell the controllers what to do? what should i be looking for when shopping for the controllers?

i had a silly idea of building a tiny 5 or 6 axis robot arm.. am i crazy?

[floral spruce]

I mean it's definitely doable, just definitely not trivial either. The motor controllers will be powered by an independent power supply from the one powering the pi (you'll need a decent amount of juice if you want to be running all those motors for a sustained period of time), and the pi will interact with the motor controller to set the speed and spin direction, etc

[rapid saddle]

Well you can connect the motors to the Raspberry Pi's GPIO pins and use libraries like RPi.GPIO or gpiozero to control the motors ☺️

[plush shale]

theres enough output on a rpi to control 5 or 6 separate controllers? or am i overlooking something?

[floral spruce]

Though I wouldn't recommend that, you're going to run into issue trying to draw that much power from the pi to power all those motors

Unless they're just like little servo's

[rapid saddle]

Ahh i see

[floral spruce]

Yeah there'll be enough GPIO

[plush shale]

hmm, i definitely need to do a bit more research then. but it seemed like a cool project that i'd like to tinker with

cant wait for rpi to get back in the stores lol

[floral spruce]

I'm doing a similar thing at the moment actually, though not in Python and a bit more integrated for another purpose

And more motors 👀

[plush shale]

im intrigued! is it a secret? can you tell more?

[floral spruce]

Liquid rocket engine development, working on a motor controller PCB to control the motors that'll open/close valves for the fuel and vent lines and whatnot

[plush shale]

wow

you have youtube videos?

[floral spruce]

https://www.youtube.com/channel/UCvHhhAwCIrrPcLTuq2tiLCQ our team has a channel, there's isn't a heappp of stuff up there but there's a few things

[plush shale]

nice thanks!

[floral spruce]

But along those lines, though that's a hybrid engine, liquid engines are what we're moving towards now

[plush shale]

awesome project, congrats to the whole team!

[past fossil]

I got started with MicroPython using an M5Stack. I have a dumb question as I’m sure the solution is a simple one. I need an array, or a tuple of booleans. Right now I’m declaring the tuple like this: myTuple = (False, False, …, False) - I need 100 of these which can make the definition tedious. I tried some methods but they threw errors. Is there a faster way?

[livid berry]

(False,)*100

[past fossil]

Thanks! I saw similar formatting but they declared it oddly and your method makes more sense.

[devout wharf]

Hah, I have a m5stack core2 I just started with as well... currently getting ready to ditch the uiflow editor, so awful, I love blockly, and I wish this mess was open sourced.

Never done microcontroller work before this, currently trying to find a good doc on using thonny to program the dang thing

[spiral sandal]

edublocks is open source and handle python

[devout wharf]

I was hoping to say in the m5stack ecosystem. I'm comfortable writing python though. Edublocks could work, I'd have to look at moving over all the m5 stuff though. At this point I'm just switching to thonny and raw python, using uiflow to see how underlying libraries are used

the documentation on the m5 python libraries isn't hot

the UIFlow webui open/save/etc doesn't work in chromium for me, so I can't keep from losing all my work. The desktop IDE is behind several revs so missing quite a few blocks I need. When uiflow v2 comes out a bunch of that is supposed to be fixed. We'll see.

[opal blade]

using the pi pico, can you type onto the desktop it is plugged in?

[gentle vapor]

as in emulate a keyboard ? yes

[white fox]

does anyboady know how to calculate a printer nozzle from a 3d printer with a raspi or an arduino rp2020 connect board

[hollow violet]

"calculate a printer nozzle from a 3d printer with a raspi or an arduino rp2020 connect board" ???? what you want?

[white fox]

i wanna write a code that i can run on an raspi with that i can calculate the temperature from an printer nozzle

[hollow violet]

you setup already your heater cartridge and your thermistor ?

and how you controll the heat cartridge ?

you get the temperatur already in python code?

[white fox]

i alrdy found a solution but ty

[hollow violet]

ok

[worldly bolt]

im trying to send a request from micropython.

but im getting an error

from machine import Pin
import urequests as ureq
import ujson as json
import network
import time

switch = Pin(10, Pin.IN, pull=Pin.PULL_UP)
led = Pin("LED", Pin.OUT)

ssid = "MI6 Surveilence"
password = "Lotus!2366"

wlan = network.WLAN(network.STA_IF)

wlan.active(True)
wlan.connect(ssid, password)

max_wait = 300
while max_wait > 0:
    if wlan.status() < 0 or wlan.status() >= 3:
        break
    max_wait -= 1
    print("waiting")
    time.sleep(1)

if wlan.status() != 3:
    raise RuntimeError("Network Connection Fail")
else:
    status = wlan.ifconfig()
    print('ip = ' + status[0])

pressData = {"room": "21"}

res = ureq.post("rooms.litelot.us", data=pressData)

however im getting this error

Traceback (most recent call last):
  File "<stdin>", line 34, in <module>
  File "urequests.py", line 184, in post
  File "urequests.py", line 61, in request
ValueError: need more than 1 values to unpack

line 34 is res = ureq.post("rooms.litelot.us", data=pressData)

according to the documentation that should work

[errant wigeon]

Can you try posting data=json.dumps(pressData), I'm looking for the docs but I think it might need the pressData to be in a different structure

[worldly bolt]

no dice, same error

[errant wigeon]

Well that'll teach me to try and debug before I really wake up. I'll go through the docs and see if I can see something, someone else might beat me to the solution in the meantime

[worldly bolt]

thanks

[gentle vapor]

you are not giving it a URL

[worldly bolt]

?

yes i am

[gentle vapor]

the first argument must be a URL

[worldly bolt]

that is a url

[gentle vapor]

no you're not, you are giving it a domain name

[worldly bolt]

do i have to specify protocol?

[gentle vapor]

a URL starts with a protocol

[worldly bolt]

different error, but still erroring

[gentle vapor]

that's called progress

[errant wigeon]

Undo the change I suggested, that way you reduce the likelyhood of compounding hidden bugs

[worldly bolt]

yeah, tried without and its the same thing

OSError: -2

wish python errors were more descriptive

[gentle vapor]

yeah the error is not clear, but that's this line:
https://github.com/micropython/micropython-lib/blob/a08087249fda8a7994f7c54ccaad29fb9fcc448a/python-ecosys/urequests/urequests.py#L76

[hasty zealot]

python-ecosys/urequests/urequests.py line 76

ai = usocket.getaddrinfo(host, port, 0, usocket.SOCK_STREAM)```

[gentle vapor]

❯ curl http://rooms.litelot.us
curl: (6) Could not resolve host: rooms.litelot.us

[worldly bolt]

ah dns hasnt resolved

[gentle vapor]

yeah unfortunate that the error is so generic

[worldly bolt]

sweet, thanks guys

can start working on sending that request when the button is actually pressed

[errant wigeon]

@gentle vapor Thank you for stepping in!

[devout wharf]

If you burn micropython to an esp32, what protects the firmware? Anything? I could presumably write enough python to read all the files on the esp32 and ship them back off?

(new to microcontrollers)

[gentle vapor]

technically I don't think there's anything protecting the firmware, you can dump it with esptool, or connect to the REPL, read and print the content of the files. What do you want to do ? Retrieve the code ? Hide the code ? Protect passwords ?

[devout wharf]

Retrieve the code mostly, I'll read up on using esptool to dump firmware.

[gentle vapor]

if you have access to the serial lookup the tools:

• mpremote
• Thonny

[devout wharf]

I have thonny, and I know it prints the contents of what's on the device, but I feel like it doesn't show all the code.

[gentle vapor]

it shows the python code on the board's internal drive, what do you think is missing ?

there are builtin modules that are coded in C

and there are frozen modules that are written in python but integrated inside the firmware (in bytecode)

so maybe you are looking for that ?

their source is available on github

knowing which is which might require a little digging

for example we just talked about the urequests module, which is frozen into ESP builds of Micropython, whose source is here:
https://github.com/micropython/micropython-lib/tree/master/python-ecosys/urequests

[devout wharf]

So I'm using a m5stack core2. It has some custom python libs, which I am unable to find using thonny.

m5stack/m5stack_ui are two of their custom python libraries, but using thonny, there is no such python files laying about

[worldly bolt]

out of interest is there a good way of handling an event in micropython? say a pin goes from high to low and i want to do something on that falling edge. whats the best way to do that?

[devout wharf]

timer

[gentle vapor]

you can setup an interrupt on pin change

[worldly bolt]

that sounds like it

how do i go about that though?

and i assume im gonna need a loop on the main thread to keep it alive

[devout wharf]

I guess I'll have to see if I can dig in a little further on what/how the m5tool software flashes the device so I can get a handle on what it loads up, and try to better unstand it from there. Basically, I'd like to switch to plain ole micropython, but I'd sure like to be able to use some of the already existing python libraries they've written.

[gentle vapor]

that's rarely necessary though, I'm more in favor of using asyncio, maybe like that:
https://github.com/peterhinch/micropython-async/blob/master/v3/docs/DRIVERS.md#4-interfacing-pushbuttons

[gentle vapor]

ah ok I see what you're talking about, they probably have their own fork of Micropython with the modules added in, let me see if I can find it

[errant wigeon]

You'll probably want a main loop that handles everything it needs to check. Then, as events take place like a pin change, you can enter a new function dedicated to that state that quickly does what needs to be done and gets ready to return to the main loop

[devout wharf]

I'm pretty sure they do have their own fork, but it doesn't appear to be open source.

[devout wharf]

It looks like at this point I either need to switch to openrtos, which they do have open, or I need to be prepared to re-write a lot of python modules, which isn't the end of the world either.

This all leads back to my question of there must be some way to run their fork of micropython, and dump the source off the device, using python I write and upload with their tooling 😇

[worldly bolt]

im looking at the uasyncio https://github.com/peterhinch/micropython-async/blob/master/v3/docs/DRIVERS.md

[gentle vapor]

frozen in modules are in bytecode, I don't know if you'd get much more information than you can get by using dir() and help() on them anyway, maybe there's a way to decompile, I would ask in the micropython discord

[worldly bolt]

thing is, i cannot import primitives, says its missing

do i need to add the module via pip?

[devout wharf]

Interesting, ok, I'll investigate more.

[errant wigeon]

Which version of micropython are you using?

[worldly bolt]

downloaded it on friday so im assuming the latest one

i havent installed micropython locally if thats required

[gentle vapor]

what does say what is missing ?

[devout wharf]

thank you times a million btw, gave me lots of good terminology to research and learn more. Very appreciative.

[worldly bolt]

primitives

[gentle vapor]

can you show the error message ?

[worldly bolt]

Import "primitives" could not be resolved

ln:2 from primitives import Pushbutton

[gentle vapor]

The drivers require firmware version >=1.15. The drivers are in the primitives package. To install copy the primitives directory and its contents to the target hardware.

the primitives module here https://github.com/peterhinch/micropython-async/tree/master/v3

[worldly bolt]

i dont know what that means though, target hardware? im guessing the picow?

[gentle vapor]

yeah your microcontroller

[worldly bolt]

ok

[gentle vapor]

you want to copy the primitives directory onto the drive of the board, usually into the lib directory

maybe I'm sending you on an advanced course rather than the simpler ways 😕

[worldly bolt]

im fine with complex

i just have no idea how to do that

same way i installed micropython on the pico?

if so do i copy the folder or the files in the folder?

[gentle vapor]

here is a tutorial that looks fine for using an interrupt with a button:
https://www.coderdojotc.org/micropython/advanced-labs/02-interrupt-handlers/

[worldly bolt]

the code isnt what has me confused

its the setup xD

[gentle vapor]

what editor are you using ?

[worldly bolt]

vscode atm

[gentle vapor]

with a plugin I assume ?

[worldly bolt]

indeed

pico-w-go

[gentle vapor]

I'm not familiar with that, but surely there is a way to transfer files onto the board with that

[worldly bolt]

it does have an option to start an ftp server

[gentle vapor]

oh it as a sync feature, that might be the simpler way, and really nice for keeping a local copy

[worldly bolt]

oh ok

[gentle vapor]

I'm looking at the page https://marketplace.visualstudio.com/items?itemName=paulober.pico-w-go

[worldly bolt]

am i doing something wrong?

set . to the sync path

(it specified no leading or trailing /)

[errant wigeon]

does the primitives folder have a __init__.py file in it, and what are the contents of that directory?

[worldly bolt]

(i removed the tests dir)

[errant wigeon]

Does the code run anyway?

[worldly bolt]

no, it still cannot import primitives

Traceback (most recent call last):
  File "<stdin>", line 7, in <module>
ImportError: can't perform relative import

[errant wigeon]

can you tell if init has double or single underscores around it?
(I'm following the debugging process in this similar issue on github: https://github.com/peterhinch/micropython-async/issues/90 )

[worldly bolt]

double as far as i can tell

yeah its double

btw, i really appreciate you taking the time to help me debug this

[errant wigeon]

can you try just importing primitives?
If you can, could you print(dir(primitives))

[worldly bolt]

still cant import it

[errant wigeon]

additionally, try swapping the import order so the primitives import comes after uasyncio

[worldly bolt]

even if i just import primitives

moved it to the line after all the other imports and still no dice

[errant wigeon]

does it still fail on the primitives import?

[worldly bolt]

yup

[errant wigeon]

well at least it's consistently an issue with that, instead of being something more vague and lurking

I'm going to have to step away from this for a while. I'm not familiar enough with micropython and uasyncio, and using the vscode plug-in, to know what's going on under the hood. I'm not sure if the directory is in the correct location. Maybe try deleting the primitives directory and try adding it? In the meantime I'll read up on this and maybe someone else can step in with more experience. There's also the micropython discord which has an asyncio channel which might be the best place to go to ask

[worldly bolt]

thanks for taking the time at least

[errant wigeon]

No problem, if you're still stuck when I get back I'll try to duplicate the process with my vs code instance and if you get it working I'll be eager to hear what the solution was

[worldly bolt]

ill let you know if i fix it

not gonna lie, probably wont fix it

[errant wigeon]

Debugging isn't a straightforward path, you never know. In addition there's lots of other knowledgeable folks here and on the micropython discord who might know exactly what the issue is

[worldly bolt]

i didnt know there was a dedicated micropython discord

[errant wigeon]

https://discord.gg/RB8HZSAExQ

[errant wigeon]

And the adafruit server can be found here

[hallow igloo]

is data sharing using reading/writing using txt file in python on windows fast enough for real-time electro-mechanical applications ?

[mental prawn]

hey, i am having a simple issue where even though I set the global variables to be optimal for the programs while-loop to run, it does not.

using micropython on a pico

[hasty zealot]

Hey @mental prawn!

You either uploaded a .txt file or entered a message that was too long. Please use our paste bin instead.

[mental prawn]

https://paste.pythondiscord.com/mefecedika

the code or what's important of it is there. many thanks. it is most likely some minor issue

I know the IRQ is running on its "own" sort of but it should still be able to transmit the value of the global variables changed within it to the whole program, no?

[worldly bolt]

hey guys, still cant get primatives imported

[quiet sparrow]

I might need help with my raspberry pi 4 (it has booting isusses) and if what I am trying does not work I will need help

[quiet sparrow]

ya i need help

what nevermind

wait*

[hoary marlin]

this isn't exactly related to microcontrollers but similar idea - i'm writing a library that has to communicate with external devices, but I'm not really sure how to test it using pytest, because I can't exactly just assert that something is true, since it depends on the external device. does anyone have any suggestions on how to write tests?

[frail geyser]

hi

is there anyone here experienced with Pi Pico / MicroPython

how can i troubleshoot a program getting stuck, getting unresponsive, stopping altogether

like I2C lcd screen just stopping, other thread not running

and theres no error messages either

[hasty zealot]

Hey @frail geyser!

It looks like you tried to attach a Python file - please use a code-pasting service such as https://paste.pythondiscord.com

[frail geyser]

https://paste.pythondiscord.com/ovefujahuj

[valid oyster]

Anybody have an Idea of how to fullscreen render a camera feed created by OpenCV using the Raspberry Pi's built in GPU by using (I'm guessing) OpenGl packaged with OpenCV

[young swift]

Is this for face recognition

I did a similar project but on my mac

Because the raspberry pi is too slow

[valid oyster]

No, it simply needs to render at the original 30fps

[rain forge]

Hey there,
I need some help, I am lost... 😦
I have to put out dali signals on UART.
this is the bit array: 1001010101010101100101010110010101
How can I put this to uart? (1 is high, 0 is low)

[spiral sandal]

at first glance dali bus is not compatible with UART signalling, maybe you want to speak to a "dali controller" and the thing should have some documentation ...

[rain forge]

I hoped that I can do something like bitbanging but on uart

[rain forge]

there is a ton of way for bit manipulation, but I didn't find the rigt combination

[steady sky]

import network
import socket
import time

from machine import Pin

led = Pin(15, Pin.OUT)

ssid = 'YOUR NETWORK NAME'
password = 'YOUR NETWORK PASSWORD'

wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(ssid, password)

html = """<!DOCTYPE html>
<html>
    <head> <title>Pico W</title> </head>
    <body> <h1>Pico W</h1>
        <p>%s</p>
    </body>
</html>
"""

max_wait = 10
while max_wait > 0:
    if wlan.status() < 0 or wlan.status() >= 3:
        break
    max_wait -= 1
    print('waiting for connection...')
    time.sleep(1)

if wlan.status() != 3:
    raise RuntimeError('network connection failed')
else:
    print('connected')
    status = wlan.ifconfig()
    print( 'ip = ' + status[0] )

addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]

s = socket.socket()
s.bind(addr)
s.listen(1)

print('listening on', addr)

# Listen for connections
while True:
    try:
        cl, addr = s.accept()
        print('client connected from', addr)
        request = cl.recv(1024)
        print(request)

        request = str(request)
        led_on = request.find('/light/on')
        led_off = request.find('/light/off')
        print( 'led on = ' + str(led_on))
        print( 'led off = ' + str(led_off))

        if led_on == 6:
            print("led on")
            led.value(1)
            stateis = "LED is ON"

        if led_off == 6:
            print("led off")
            led.value(0)
            stateis = "LED is OFF"

        response = html % stateis

        cl.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n')
        cl.send(response)
        cl.close()

    except OSError as e:
        cl.close()
        print('connection closed')

hey, I wanted to setup a simply web server on raspberry pi pico w with this code (literally copied from raspberry pi website with replacing network credentials) and it throws an error Errno 98 adress already used pointing to the line with s.bind(adrr) command. Any idea why it's going like that?

[spiral sandal]

probably you already have a webserver running on port 80, maybe like apache or nginx

[spiral sandal]

you probably could, but not on uart, you need a digital pin instead and a power adapter since dali signal is 16volts not 3volts, i'd suggest an optocoupler, a dc-dc step-up with low ripple to ouput 16v and a simple transistor for injecting signal

or just buy one of those https://www.lunatone.com/en/product/dali-rs232-ps240ma/ seem they have support already https://github.com/sde1000/python-dali/blob/master/examples