microcontrollers

[sick dagger]

lmao

[tropic hornet]

Nice

[regal acorn]

i was able to play krunker on my pi
that sounds like a pain

[tropic hornet]

Kind of

[sick dagger]

nah it ran at 30 fps

unmodified settings

but it did have some lag spikes here and there yikes

[ancient harness]

O_O I got my Arty Z7 dev board interfaced with my robot. Now for trying to get an AI core working in Verilog...

Python SDK even

lol

[stone crown]

@hallow igloo I don't think is quite microcontrollers related. If you grab a help channel I can help you out though.

[quasi fable]

hello i'm new sorry if i'm the wrong chat, i'm having a problem with my arduino mega it is receiving several strings through the serial by a python program but my python program when it sends several strings it freezes but when i switch to an arduino nano it works perfect without problems anyone knows what can be?

[hallow igloo]

hello what are microcontrollers

#discord-bots

[hallow igloo]

so i have this school project to see the effects of florescent lights on plants

so i was thinking that i could use relays to control the lamp and turn it on and off

but ive never done it before

so if anyone has any advice on any materials or ways to do it

id really appreciate it

[hallow igloo]

@hallow igloo Sorry if this is a bit late, but one thing that immediately came to mind when you mentioned this was photoresistors. They're basically resistors whose resistance is proportional to how much light is shined down upon the resistor. For instance, if you shine a light directly onto the resistor, it'll demonstrate a ton of resistance, but if you're using the photoresistor in a pitch-black room, it'll show virtually no resistance at all.

yea but im trying to control the lights to turn on and off at set times

by controlling the power

i was just wondering if anyone knew like what to buy for that

like a relay or smth

I'm guessing it uses power directly from a wall socket or something, then? I think I misunderstood the question, then. Sorry.

I'm thinking within the realm of Arduino, where you could provide milliamps of current to something at the very most.

im pretty sure a relay allows for it though

but im not sure

I'm not the most well-versed with using relays, but I know that there's a delay() command with using Arduino that allows you to specify how long you want to delay some lines of code before you move onto the next lines of code.

You probably want to take the advice of someone better with microcontrollers than me before you go out and purchase something, though.

[zealous island]

@quasi fable Make sure you are using the right baud rate, it should be the same on both, your python code and the arduino

@hallow igloo The easiest way is using a relay module, you can use a simple relay but it's a little more work, the relay module is pretty straightforward to use, you only need to send high and low values to the input pin of the relay

It also must be connected to the 5 volts and the ground of the arduino.

Just like this

And to turn it down you only send low and high values to the input pin

[hallow igloo]

ooo okay

this is so helpful

thx

[young merlin]

i found this very useful when i used to do arduino

https://www.circuito.io/

[hazy schooner]

hello i'm new sorry if i'm the wrong chat, i'm having a problem with my arduino mega it is receiving several strings through the serial by a python program but my python program when it sends several strings it freezes but when i switch to an arduino nano it works perfect without problems anyone knows what can be?
@quasi fable What is the default baud rate for each one?

[hallow igloo]

hello everybody
i have a microprocessor 8086
someone knows how to connect a screen at the microprocessor ?

help me if u can please

i don't arrive to find a tutorial to connect my screen at my microprocessor, it s a real pain !

thank u

[hallow igloo]

pls

[zealous island]

I don't think you can just do that, I'm pretty sure you need to build a very basic computer to start doing anything. I suggest you to see this YouTube chanel, it might be helpful for you purposes

https://www.youtube.com/c/BenEater

[opal furnace]

How can I get my ESP32 to sign in to my WiFi and appear with a device name? (Machine name being like the name you set in windows, etc., usually is laptop-#### or desktop-#####)

That way, I could host a mini webserver on it and go to https://myESP32/webpage instead of https://192.168.###.##/webpage

[wheat loom]

hello everybody
i have a microprocessor 8086
someone knows how to connect a screen at the microprocessor ?
@hallow igloo this is really hard, you’d need some sort of graphic interface, the 8086 isn’t fast enough

How can I get my ESP32 to sign in to my WiFi and appear with a device name? (Machine name being like the name you set in windows, etc., usually is laptop-#### or desktop-#####)
@opal furnace you should see in your router setting for a local DNS settings, where you can assign a specific address to your esp32

[opal furnace]

I do not have access to the router settings because we rent it. Also, I want to set a name, not IP address.

[zealous island]

Then you will have to mess with DNS and that kind of stuff

[white sequoia]

m

[zinc monolith]

good book for learn microcontroller.

[opal furnace]

I found something in the micropython documentation about changing the device name when you connect it to WiFi. This makes sense to me because I can change my windows machine's device name without touching the router, so in theory other devices can do it as well.

[zinc monolith]

plz answere.

[zealous island]

I found something in the micropython documentation about changing the device name when you connect it to WiFi. This makes sense to me because I can change my windows machine's device name without touching the router, so in theory other devices can do it as well.
@opal furnace That probably only changes the hostname, you still need to set up a DNS to point that URL to your IP

[opal furnace]

I think my router includes hostnames in its DNS, because my laptop is contactable from other devices using its hostname.

[zealous island]

From a browser using an http:// URL?

[opal furnace]

@zealous island OpenSSH finds it. I run ssh user@myLaptop20 and it connects just fine. I need to get a web server running on the laptop to see if http/https can find it.

[zealous island]

Try running a web server, I wont be surprised if that works, it's searching for that domain in your local network.

[opal furnace]

ok

[zealous island]

What exactly are you trying to do with the ESP32?

[opal furnace]

mini webserver for control of various items, haven't exactly decided yet. I figured I'd best get the contact method working before I built anything.

[zealous island]

If you want to do something like IOT, I recommend you to learn about MQTT

[opal furnace]

MQTT?

[zealous island]

mqtt.org

[opal furnace]

ok

[zealous island]

Read about it

[opal furnace]

thats really cool

will it work in a browser or does the client need special software on their device?

[zealous island]

There is plenty of apps that work for using it

[opal furnace]

ok

[zealous island]

Search on Google or an appstore, the main thing here is the broker

You can get a raspberry and attach a lot of ESP32 or other device to it

[quasi fable]

@quasi fable What is the default baud rate for each one?
@hazy schooner i found the problem thanks

[stuck thicket]

ASK AN ENGINEER 11/4/2020 LIVE! https://youtu.be/oG_9oX_iozE

[woven blade]

🤔

[split owl]

Hi guys, i need help for some aspect of an project

do you think i can controll this specific rc car with an raspberry pi ?

https://www.amazon.fr/dp/B08F1Z6TX5/ref=cm_sw_r_cp_apa_i_Q1jPFbRA6N4S4?_encoding=UTF8&psc=1

there are already some project existing with different rc car but i failed to know if this on can be feasible and if yes, with wich specifi servo-motor if i need to purchase one

thanks

[opal furnace]

@split owl it looks like it already has the motor and stuff in it. If you are looking to replace the controller on it with an RPi, you will at least need an appropriate motor driver for the main drive motor (probably a bldc). If the steering motor is another dc or bldc, you will need another motor driver. If it is a servo, you should be able to talk to it like any other servo.

[split owl]

thanks for your awner @opal furnace !
Yes, the motor it's an bldc.
So if iv'e understand well, the only thing i need it's to mount my raspberry pi on it, and find an motor driver for communicate with by plugin it on the card ?

[split owl]

so for exemple

https://www.amazon.fr/dp/B07K6QR1ZP/ref=cm_sw_r_cp_apa_i_enpPFb0Y3KP84?_encoding=UTF8&psc=1

i can plug the steering and the motor using GPIO pins on this motor driver and controll it thruw the rpi ?

i'm sorry for asking this type of questions, but i want to be sure about that, beeing an novice for project involve robotics with rpi :x

[opal furnace]

@split owl connect the RPi GPIO pins to the motor controller, then connect the motor controller to the motor. You will need to figure out power, though.

and I can't really help with that

[dark hornet]

hey guys a newbie here. I have stm32f4 discovery board. I have to enable the clock for each gpio pinRCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOA, ENABLE);I don't quite understand the clock concept even though I sort of understand the fetch decode execute mechanism in cpus. Should I just skip it altogether and say it's not a big deal I'll just have to enable the clock for the peripheral I want to use and move on?

[split owl]

okay @opal furnace thanks you a lot

[deft jolt]

Hey guys, so i just got an ESP32 today, has anyone here worked with micropyton and ESP32?

[opal furnace]

Yes! @deft jolt what board did you get?

[light plinth]

Hey guys, so i just got an ESP32 today, has anyone here worked with micropyton and ESP32?
@deft jolt i have sme experience with micropy and esp8266 tho...

[old mountain]

what kind of microcontrollers would be useful to a beginner in python?

[sudden hamlet]

pyboard is a good one

there are other micropython compatible boards but that's the one i'm familiar with

(that's if you just want to use python)

if you're happy to try out other languages then i'd also recommend arduino and playing around with a raspberry pi

[toxic parcel]

so this channel is for asking about hardware programming (aka arduino) right?

[opal furnace]

If you are running python on it somehow, then yes

[white bramble]

Anyone have experience with the python RTLSDR wrapper with asyncio

finding an uncomplicated example on github is tough

[light plinth]

what kind of microcontrollers would be useful to a beginner in python?
@old mountain raspberry pi, or esp32/8266 running micropy

raspberry pi seems like the best choice imo...

micropy is limited

[white bramble]

for sure. you can control the output pins on a breadboard

i suggest you get the electronics kit that teaches you about the signals comming out the pins

[zealous island]

raspberry pi seems like the best choice imo...
I would suggest a MicroPython board or better an Arduino, it is cheaper, a Raspberry Pi is overpowered when compared to a microcontroller

[rain forge]

hey there!
Is this the topic where I can ask question about micropython? Or this topic is mostly focus on rpi and "full" python?

cause I need some help with mqtt over wss. One of the customer requres that to connect mqtt over wss, and I don't know where to start, is it even possible?

[hallow igloo]

If it runs python, we got you covered

As for for what wss is and implementing it for micropython, no clue

[stuck thicket]

WE ARE LIVE! SHOW AND TELL! https://youtu.be/B2uQ5SHIxfw

[golden tendon]

hello

I am a young Brazilian student of 14 years old, I am in love with arduino and much more with programming, sorry for my english, because I am using google translator, I am making the project of an iron man jarvis, does anyone already have the commands ready?

I’m very stupid when it comes to programming, I’m just starting out, if someone has some tips it would help me a lot

[hallow igloo]

@golden tendon are you starting with python?

[golden tendon]

yes I am

[hallow igloo]

@golden tendon do you know the basics?

[golden tendon]

+or-

[hallow igloo]

@golden tendon what?

[golden tendon]

I know very little

[hallow igloo]

How much exactly?

[dark hornet]

"STM32F407G-DISC1 would require extra UART to USB dongle or flying wires connection to make a virtual com port"

do I need something like this for a virtual com port? I don't exactly get it sorry I am dumb

[lucid elm]

do you guys have any suggestions for someone who wants to get started with advanced robotics using python. I already know the basics of gpiozero. Are there any better libraries?

[golden tendon]

How much exactly?
@hallow igloo very little indeed

do you guys have any suggestions for someone who wants to get started with advanced robotics using python. I already know the basics of gpiozero. Are there any better libraries?
@lucid elm bro and the next one I know the language of arduino so much, and the rest of the robot itself is pretty good, if you want help with a project or if you have any questions about the circuit I can help you, then just call me in private

[hallow igloo]

@golden tendon learn the basics from youtube videos. Then learn how to work with libraries. There is some code for A.I on Github but I don't think it will be that helpful if you don't understand it.

[split relic]

Does anyone know any good python libraries for the raspberry pi for text to speech? I’ve tried espeak but It seemed to be not documented to the best extent (from what I’ve found)

[warm drift]

"STM32F407G-DISC1 would require extra UART to USB dongle or flying wires connection to make a virtual com port"

do I need something like this for a virtual com port? I don't exactly get it sorry I am dumb
@dark hornet Can I Use this UART interface to connect, for example, with certain televisions, if it have this connection?

[hallow igloo]

Is it possible to create a small computer similar to the micro controllers using python?

[tidal ingot]

Im not 100% sure that you meen that. But im think you looking for somthing similar to an "pyboard".

[hallow igloo]

adafruit has a discord user? that's pretty cool they seem like a quality, yet pricey option for makers

Define small computer. You need a use case if you're going to work with microcontrollers. If you expect to have a web browser and desktop env off an esp32 you will not find yourself happy. If you want to handle requests or run something like mqtt to make your life happier, hell yeah

[craggy ember]

I have written mqtt tutorials for the ESP32 for Adafruit. I will soon make some for the ESP32-S2.

[hallow igloo]

in python or c++? if you don't mind me asking

doesn't have to be in python to be here just curious

I would be happy to peruse your work sometime tell you how it goes

[opal furnace]

I know the ESP32 has 512kiB of RAM onboard and that is often pretty restrictive. Let's say I have a microcontroller for which there is already an existing port of uPython (working on one, designing hardware first tho). How much RAM would be needed to do most things without too many restrictions? 1MiB?

[craggy ember]

@hallow igloo in Python. I have a large collection of them on my GitHub if you would like to see.

@opal furnace I do not have a direct answer for this off the top of my head however I have a tutorial on my GitHub where I teach how to freeze all of your py modules and then disable the REPL for more advanced projects. I am working on a local DEFCON chapter badge with MicroPython and it is quite advanced. I have not had any issues with memory at all.

[hallow igloo]

hell yeah link it @craggy ember or you can just shoot me the link in dms

[craggy ember]

I will send a DM @hallow igloo.

[craggy ember]

I little something I did for micro:bit https://www.youtube.com/watch?v=b4V13Lvk_jM&feature=youtu.be

[opal furnace]

thanks @craggy ember

[craggy ember]

Most welcome tell me what you think.

[long rover]

anyone has an example python code with the MCP23S17 for me to learn

[golden tendon]

oops, i was thinking imagine us all one day if we ruin to do a mega sksks project. unfortunately it is impossible because I am from Brazil, but it would be incredible

[stuck thicket]

DESK OF LADYADA - Machine Learning Sunday with BrainCraft HAT + Coral Module https://youtu.be/4ByslMN5npQ

[warm adder]

can someone help me with some ideas on how to create a netlist for this circuit ->

so far I have written a code which generate a netlist.txt file for me with this content

a2 a21 a22 a2o

o1 o11 o12 o1o

n1 n11 n1o

xo1 xo11 xo12 xo1o

Is there a better way to do this? I have to actually make this circuit work, by takin inputs from user (for input nodes) and generate output (for output nodes)

Please tag me to notify 🙏

[hushed ocean]

Was wondering . Does anyone have a good place to find info on pymkr coding (expansion board) and how to work with sensors?

[golden tendon]

you could help me i wanted to do something incredible my work office, preferably with arduino, if you have please send me

[hallow igloo]

@zealous island thx a lot, you show me the channel Ben Eater and i started to create my computer thanks to this channel
thank u

[hallow igloo]

thanks to @zealous island :

and it s not finish

[molten edge]

WOAH

nice 😄

[zealous island]

@hallow igloo Wow, nice job, I'm glad it was useful to you

[wheat loom]

Niiiice

Who doesn't love some jumper spaghetti

[stuck thicket]

WE ARE LIVE! SHOW AND TELL! https://youtu.be/YT5kr7X5H0U

WE ARE LIVE! ASK AN ENGINEER! https://youtu.be/byZ3pWXf_2I

[hallow igloo]

@zealous island it s really thanks to u. If u xas not here to help me, i think that i didn t continue the project . again : THANK YOUUUUUU

u show me the Channel Ben Eater and it s so ggod bro

if people want to start the assembly language go on the channel Ben Eater and make his project

the project is make a microprocessor 6502

https://www.youtube.com/channel/UCS0N5baNlQWJCUrhCEo8WlA

it s so good

and u have this for the project : https://eater.net/6502

[next mortar]

I'm working on a little project for mt Raspberry Pi, does anyone know of a library that can interact with gpsd? The only one I see is for Python 2,7, but I'm on 3

I really dont want to have to parse the text myself

[hallow igloo]

i dont remember, what is gpsd

[next mortar]

daemon that looks after the ouput of a GPS reciever

I could get it direct from the serial device, but its just a mess of text I'd have to parse

[hallow igloo]

whaat

wait my friend

aaaaand, what do u want to do

no it s good finnaly i understand

yeeee rappi

i will try to help u

i don t know if i will ariive but i will try

i found something for u

@next mortar here : http://www.deanandara.com/Argonaut/Sensors/Gps/GettingData.html

interesting

the most is here i think : https://www.youtube.com/watch?v=I7fyFb7gNEQ

gl @next mortar

[hallow igloo]

is it good for u @next mortar ?

[next mortar]

Sorry was AFK. That bit I have done, I can already connect to the GPS reciever, im after something that can parse the NMEA sentences for me

I may have to do that myself though

[hallow igloo]

Anybody have some cool code involving a piezo speaker and micro:bit?

[golden tendon]

thanks to @zealous island :
@hallow igloo OMG KSKSKS

I AM PUTTING IN MY ROOM A SYSTEM IN THE DOOR THAT ASKS FOR A PASSWORD, WHEN I WENT TO PASS TO THE ARDUINO HAD THIS ERROR, WHAT CAN I DO? CAN SOMEONE HELP ME?

[sudden hamlet]

can you show the definition of senha and position

@golden tendon

[golden tendon]

yes

solved that problem, now another kkkk appeared

ahhhhhhhhhhh

[sudden hamlet]

you want char senha[]

unfortunately arduino's cpp will automatically cast char array to char in some circumstances

which is just

lunacy

[golden tendon]

LIKE THIS?

[sudden hamlet]

char* senha[] = "text"

[oak badger]

yeah that

[sudden hamlet]

ok i think char *senha[] = "text" makes more sense

and char *(senha[]) = "text" makes it clearer whats going on

but is overdoing it a bit imo

[golden tendon]

why?

why😩

[sudden hamlet]

what is that

ah

( not {

[hazy schooner]

Fun project I build that I though I would share. Is a python GUI(pyqt5) run on raspberry using opencv with a raspberry pi camera module

Let me know if anyone has ideas or suggestions on changes or improvements that think would be fun to see

[hallow igloo]

👍

[lime swallow]

maybe smaller/smoother steps on the camera? looks great tho

[hallow igloo]

Fun project I build that I though I would share. Is a python GUI(pyqt5) run on raspberry using opencv with a raspberry pi camera module
@hazy schooner what are you controlling the Camera with

With Arduino?

And what language did you use for coding the microprocessor or Arduino you used python or Arduino?

@hazy schooner

[hallow igloo]

hello

[hazy schooner]

@hallow igloo it’s all in python on a raspberry pi

[limpid olive]

Hello everybody! I need your help. Does anyone have an idea how I can recognize where someone is in the room?

[hallow igloo]

@hazy schooner can you show me how?

i really want to do arduino with python

and do more on opencv

[hazy schooner]

@hallow igloo I can help some with open cv I haven’t really done much with arduino in years so I can’t help much with that

[shy zenith]

not arduino exactly, but if you're just getting started, check out something like https://www.adafruit.com/product/4028?gclid=CjwKCAiA7939BRBMEiwA-hX5J6XnqgIREeU6N6gWvd5O3lb4xiCoY2xRo0etc9qnztArPthQ9Ylh-xoCeWUQAvD_BwE

but for opencv, you want something more like a raspberry pi than like an arduino

[hallow igloo]

Thanks

but for opencv, you want something more like a raspberry pi than like an arduino
@shy zenith I will do it on my computer

[hallow sluice]

hi

[hallow igloo]

Is there a micropython discord

[hallow igloo]

Thermal goggles

[hard folio]

@hallow igloo no

[sacred crescent]

https://discord.gg/adafruit

[hard folio]

Hmm

You can get help for Circuitpython and Micropython as well as boards related to it here

[hard folio]

Motion sensors or thermal sensors

[vocal scarab]

laser arrays as grid ,...

[hallow igloo]

wowee was getting my rpi to act as a bluetooth speaker a headache

next on the itinerary is shoving sensors onto it so I can see the temperature and air pressure

[stuck thicket]

WE ARE LIVE! SHOW AND TELL! https://youtu.be/-sQtlMGRXJI

[woven blade]

Ok?

[stuck thicket]

ASK AN ENGINEER 11/25/2020 LIVE! https://youtu.be/AqBdFKDOzb8

[hard folio]

[hallow igloo]

Anyone here have any good tutorials on printing to an LED with micropython?

Ya boy trying to flash a clock to this esp8266

It's already a watch but the clock is horribly out of sync. Too slow

[zealous island]

@hallow igloo What kind of led are you talking about? A 7 segment display, a led matrix or character LCD?

Well I searched a bit and found these that can work https://github.com/mcauser/micropython-tm1637
https://learn.adafruit.com/micropython-hardware-led-backpacks-and-featherwings/micropython

But if you want to know how these things work and how to use them you can check out these videos that I personally found very interesting, they don't show any code at all but once you understand you can make them work on any dev board with ease: https://youtu.be/hZRL8luuPb8
https://youtu.be/7zffjsXqATg
https://youtu.be/Degt4HUzWXY

[hallow igloo]

I can send you a picture when I get home

I think it might be a character LED not sure

I can send you a link to the site I bought it off of. It was made to use a software called deauther but I don't want any of that I'm just planning to reflash it into a cool watch

Also, micropython supports async????? Nutty

It's a SH1106 OLED if that helps answer @zealous island

[gray imp]

any of you use micropython on calculators?

[zealous island]

@hallow igloo It works more like a character LCD, have you tried this https://github.com/robert-hh/SH1106

[hallow igloo]

I haven't tried anything yet I'm hoping to mess with it tonight

But I did see this

Idk how I'll make a clock work better but I think it'd be fun to do with micropython

This might seem like a silly question but what are some alternative ways to flash to a microcontroller? I was using an IDE called UpyCraft and while it was a decent editor it was kinda buggy. I would like to just write micropython code and just send it with command line or something

Of course that editor worked just fine for flashing code I'm just lazy

[tropic yarrow]

[Not directly about python]
Looking for suggestions for a cheap micropython board (no need for a lot of processing, or GPIO even) that has PoE.
Anyone come across these kind of little dudes?

[hallow igloo]

Hey guys, Do any of you know about a good module for designing vapes?

[wheat loom]

Designing what?

[tidal mauve]

yes

[molten fable]

I wouldn't use python for a vape device if thats what you mean. its too big

[hallow igloo]

I

[fast elm]

anyone well familiar with micropython usocket module? I am refactoring some code from a 3rd party, and I found a call to usocket.write(data, int) - which is not documented. Anyone know what it does?

[long rover]

anyone worked with Mosquitto before and can help me?

[tropic yarrow]

http://sol.gfxile.net/dontask.html @long rover

[long rover]

ty

[grim badge]

guess cause it's not implemented 🙂 https://github.com/micropython/micropython-lib/blob/master/socket/socket.py

is there a way to get the dhcp leases issued when in AP_IF mode?

[stuck thicket]

WE ARE LIVE! Desk of Ladyada! https://youtu.be/sIiG97f3VbQ

[fast elm]

That code is just extension of usocket module, and doesn't even have write defined. I found out it was the number of bytes of the data to write through trial and error

[grim badge]

ah sure i wasnt reading right

https://github.com/micropython/micropython/blob/f7225d1c9527c9839d80b8f73641ddb4ebbe6105/ports/zephyr/modusocket.c#L219

hmm now that i did edit the link 5x it should be right 🙂

[long rover]

can anyone help me with this?

[grim badge]

@long rover you need to figure why the connection attempt is timing out. i guess you are mismatching sth. do not use sudo without reason

[long rover]

i solved it thanks

[grim badge]

https://github.com/micropython-IMU/micropython-fusion/blob/master/fusion_async.py

[sudden hamlet]

nice packaging

is that a tic tac box

[grim badge]

these are commonly used to package electronic components.. got some from banggood

it'd be more compact with just tape but it's to be put on 🐶

https://github.com/gretel/dogspeed

readme sparse for now

[long rover]

can anyone help me?

[grim badge]

@long rover http://sol.gfxile.net/dontask.html

this channel is for microcontrollers.. maybe people on a channel more suitable for ye question can help. like #game-development

[grim badge]

some long time ago i read on try..except...finally phrases being costly in terms of performance... afaik this got less of an issue on cpython ... but how about micropython?

[grave kestrel]

Hello, I will start my learning on micropython

I have many question

As I am new to micropython, I would like to know if I could replace the functions of an arduino mega by a pyboard to control a robotic project (DC motor control via PWM) and use my feather radio for remote control?

[grim badge]

i suggest to start with something very simple

but yes sure

[grave kestrel]

Yes I have buy pyboard and book for learn before

🙂

[grim badge]

you can go with any supported microcontroller in the beginning

[grave kestrel]

I never try python, but I have look many video and I love all feature its possible on this (sorry for my english)

I work on arduino since many years on my projects 🙂

[grim badge]

its easier to learn python on a desktop machine first

the basics

https://repl.it/languages/python3

[grave kestrel]

Thank you

Actualy I use mega 2560 for control all of this

You think after long learning its possible with micropython 🙂

[grim badge]

well you can probably keep it that way

and use some bus to interconnect

[grave kestrel]

Its new way for me 🙂

But I've seen so many interesting things

[grim badge]

https://github.com/firmata/protocol/blob/master/protocol.md

[grave kestrel]

Thank you I will look that

[grim badge]

just one approach to have micrcontrollers and hosts interconnect

json will do too 🙂

[grave kestrel]

Thank you jitter for all

[opal saffron]

Hello, anyone has experience in Assembly Programming (AVR Studio)?

[grim badge]

@opal saffron http://sol.gfxile.net/dontask.html

[opal saffron]

didn't really find anything related to Assembly language

[grim badge]

https://en.wikipedia.org/wiki/Atmel_AVR_instruction_set

what is related?

[stuck thicket]

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[stuck thicket]

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[mellow plover]

can someone help me for stm32f407

i need to read a data from adc and send that data to a website

[grim badge]

what is the question?

[mellow plover]

do ypu have any exemples.about that sending a data from stm32f407 @grim badge

To a website

[grim badge]

dont get the website part. what do you mean?

you should be fine going with the micropython tutorials cause hardware is abstracted the stm is just faster

the port specific documentation is at https://github.com/micropython/micropython/tree/master/ports/stm32

assuming you might want to do some http requests eventually you should learn most out of https://docs.micropython.org/en/latest/esp8266/tutorial/network_tcp.html?highlight=http#http-get-request

[floral spruce]

I've had the idea of hooking up an xbox one controller so that I can use it to control things in future projects, what I'm wondering is how I should go about making it transmit the information I want. I'm not sure if I should do something like somehow get a small arduino with network connectivity in there so I can just send data over a socket or if I could somehow get the bluetooth signals that the controller already emits.
Anyone got any suggestions/ideas?

And if I did go the arduino route, anyone got any resources I could use to try make sense of the circuit boards and whatnot, since I would need to figure out which signals are coming from where

[tame tinsel]

How is micropython compared to arduino?

[sacred ginkgo]

I want to use python in arduino

[hard folio]

Micropython mostly for IOT Projects

Arduino for robotics

Esp8266 (with micropython) and Arduino can work well for internet robotic projects

[sudden hamlet]

@floral spruce why not plug it in over usb and just read controller activity

would require a usb host

though

[floral spruce]

Cause wireless is cooler

And also I'm pretty sure I'll be able to just use the bluetooth signals the controller is already sending

[sudden hamlet]

don't think it uses bluetooth

ah some do

not sure what this is meant to illustrate

[hallow igloo]

hello

[sudden hamlet]

hi

[floral mantle]

haven't worked with bytes in python, so this probably sounds like a dumb question but i can not get it to work. i have an I2C device which i have to write 8 bits to a memory to, all with the value of 0. shouldn't I be able to write simply 0 as the data? (im calling a function like i2c.writeto_mem(addr,register,data))

[uneven pagoda]

ha yes, you did

[floral mantle]

yep

any ideas?

[sudden hamlet]

can't get it to work how

and what's your current code

[winged ruin]

im planning to buy a esp8266 module for arduino,,, i would like to hear all of ur advices on what module i should start with... it would really help thx 😄

i have seen like a thousand different types of esp8266 and confused on what type to start with

[shy zenith]

what do you want to build?

they all have the same microcontroller on them, if you're looking at only esp8266's, so what it comes down to after that is the features and layout of the dev board

I'm a fan of the wemos d1 mini pro, which is good and cheap

but it doesn't give a huge number of gpio pins.

[winged ruin]

just some automations, i will mostly use it on controlling relays anyways

and maybe some robotics too

[shy zenith]

if you want stuff that comes with excellent tutorials and community support, check out anything from http://adafruit.com

The Adafruit Feather Huzzah is an ESP8266 board. They've also got an ESP32 variant.

realistically, when you're just getting started, pretty much anything will work equally well for you, and the best choice is just whatever is easiest to google help for 🙂

[winged ruin]

ohhhh, thx very much!

[timber rain]

adafruit also has good support, a pi0 they sent me was completely shorted on arrival and they sent me another no questions asked

[shy zenith]

Yep, I've had similar experiences. You can definitely get things cheaper from other stores, but their support is 100% top notch.

[pseudo wren]

hello, i have a project due in 3 months, where I am to build a car with an arm controllable by muscle sensors and gyroscopes, I have everything set up except for the wireless control, which I am planning to use wifi, i was planning on 434 mhz but switched over my idea to wifi, as I need to stream video. I am planning on making it completely portable, so no need to connect to a wifi beforehand, and instead have the chip itself have a wifi connection, I am planning on connecting to this, and opening a video feed through a browser, as well as controlling the car and the arm through the wifi chip.

is this possible, and if so; what wifi chip should I use?

[tender dragon]

it can be finicky, but it should work in theory probably allot of trial and error tho.

[shy zenith]

I'd probably reach for something like a raspberry pi zero for wifi video streaming, instead of a microcontroller

[stuck thicket]

WE ARE LIVE! Desk of Ladyada! https://youtu.be/m0XAT8V37-g

[finite pawn]

Hi, I was wondering if it would be possible to send a python script to a Numworks calculator like we do from the site but this time from a USB key connected to the Newworks with an adapter? could someone please help me? I don't know if this is the right chanel, excuse me in advance.

[woven ether]

Hey, has anyone had this issue crop up. I am using pycharm along with the micropython plugin
Cannot find reference 'PWM' in 'machine.pyi'

[hallow igloo]

does anyone know how i could do arduino dev on emacs?

[grim badge]

@hallow igloo https://www.emacswiki.org/emacs/ArduinoSupport

[hallow igloo]

Do any of you know where i could learn more/something about microcontrollers?.... please

[hallow igloo]

@grim badge THANKYOU

[grim badge]

yw

[hallow igloo]

hey guys, Hope you are doing Great today, i wanted to ask about tutorials and courses related to avr Microcontroller Programming, im using Arduino from past 2-3 years and i have a really good knowledge of Electronics so Now i just really want to make something sellable that people would buy, So that's why i want to learn programming the bear microcontrollers without that arduino environment, If you know about any tutorials and courses of avr microcontroller programming just let me know and also any tips and suggestions will greatly be appreciated, Thanks

[main ridge]

anyone that has proteus full can help me create a small circuit? the shit faculty i am at doesnt care if we have it or not and wont give us licenses

[grim badge]

asking here i suggest to go with micropython

[stuck thicket]

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[stuck thicket]

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[mint elk]

is there a channel where I can find someone to hire to help me with a sound direction of arrival script in python using a 4 channel microphone array?

[errant wigeon]

I don't know where you'd hire someone to do that using pure python for the whole processing stack. I've seen custom solutions that do direction arrival (or something similar--I'm not an expert in it) using an FPGA to do all the math, and then output the location and intensity values to a more traditional micro controller/computer. Though to be fair I think it as a 96(?) microphone array, so maybe python could handle 4 channels

what design specs do you need to meet?

[wheat loom]

Note that we don’t allow recruitment here though

!rule 6

[hasty zealot]

Rules

6. No spamming or unapproved advertising, including requests for paid work. Open-source projects can be shared with others in #python-general and code reviews can be asked for in a help channel.

[wheat loom]

The rest of the discussion is fine, of course

[errant wigeon]

@wheat loom Thanks for the heads up!

For clarity, in this case would reference a different discord server be ok? The adafruit and 1BitSquared servers (as far as I know) don't allow recruitment but do have people more experienced with fpga's and the like

[wheat loom]

Sorry for the late reply, but yes you can point to another server when you think it is more appropriate. For that matter, you can even point to a recruitment website/discord if you happen to know a good one!

[errant wigeon]

@wheat loom Thank you, I appreciate it!

[grim badge]

@wheat loom can you point me to a micropython related server? this channel seems to be about anything else 🙂

[grim badge]

@errant wigeon the adafruit... notices are "approved advertisements"? personally, i feel these are more off than a little talk on working commercially

[errant wigeon]

Micropython doesn't have a discord (I'm pretty confident at least) they have a webforum where most of their conversations happen

[grim badge]

wouldnt this server sorta qualify?

i'm willing to help if that is any applicable

[errant wigeon]

While you're right, I was mostly referring to other servers so they could give a specific user a better grasp on direction of arrival and the hardware needed for it rather than pointing them there to hire someone. Just because those servers probably have more users who have experience in it and know the timing requirements of it

[errant wigeon]

And I see, I misunderstood what you were looking for

[grim badge]

just a place to be ontopic in regards to that, right

[grim badge]

my opinion on two consecutive ones - its too much. its just advertisment. if i therefore mute the channel i might miss the questions..

[errant wigeon]

I see where you're coming from, but handling (I'm assuming real time) direction of arrival on a 4 microphone array using micropython/circuit python/python on embedded linux seems difficult because of the timing sensitive nature of it. FPGAs on the other hand handle a lot of the upfront trigonometry. Based on that I thought of the two discords I'm aware of with a large userbase that has experience in FPGAs and felt they could be considered a resource

regardless the user hasn't returned so it's moot

[grim badge]

still valid.

[hallow igloo]

hey guyssssssssss

a little issue

ive been arduino deving on emacs

not the ide

and rn i have to use a lib

but im getting this error

i have made a file in my project dir

called Newping.h

and added the source code

but it still wont wok

can someone help

[hallow igloo]

ok so i tried running my program in the arduino IDE

Arduino: 1.8.13 (Linux), Board: "Arduino Yún"

Sketch uses 4592 bytes (16%) of program storage space. Maximum is 28672 bytes.
Global variables use 185 bytes (7%) of dynamic memory, leaving 2375 bytes for local variables. Maximum is 2560 bytes.

avrdude: butterfly_recv(): programmer is not responding
avrdude: butterfly_recv(): programmer is not responding
avrdude: butterfly_recv(): programmer is not responding
avrdude: butterfly_recv(): programmer is not responding
avrdude: butterfly_recv(): programmer is not responding
Found programmer: Id = ""; type = �
    Software Version = �.�; Hardware Version = �.�
avrdude: butterfly_recv(): programmer is not responding
avrdude: butterfly_recv(): programmer is not responding
avrdude: error: buffered memory access not supported. Maybe it isn't
a butterfly/AVR109 but a AVR910 device?
avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.

avrdude: butterfly_recv(): programmer is not responding
avrdude: error: programmer did not respond to command: leave prog mode
avrdude: butterfly_recv(): programmer is not responding
avrdude: error: programmer did not respond to command: exit bootloader
avrdude: error: programmer did not respond to command: exit bootloader



This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

[hallow igloo]

nevermidn

i fixed that

also

does anyone know how to format strings in cpp

.ino

[tropic hornet]

ah newping is the ultrasonic sensor library right?

[hallow igloo]

yep

and i figured it out btw

https://github.com/9ahmed/HC-SR04-distance-detector

star it :D

Its like 4 lines of code

[sudden hamlet]

uh i don't think you included the actual library

newping.h

[hallow igloo]

What is some good advice for someone who wants to make a microcontroller but has no experience with building electronics? Where should I look? What questions should I ask?

[sudden hamlet]

make a microcontroller as in what

assembling a breakout board type thing?

[hallow igloo]

Honestly I don’t know I have no experience, I have a pi, I’m getting a pyboard soon but I want to build my own.

[sudden hamlet]

what do you actually want to build

the little black thing with metal coming out

or the board

[hallow igloo]

A very simple board that can run script

[sudden hamlet]

assembly?

or like

interpreted python

[hallow igloo]

I’d like to at some point along the line clearly I can’t do this yet, but, I would like to design a very very simple kernel, design my own board, and design my own lexer parser and compiler for my own shell language

[sudden hamlet]

ok well that's kind of a completely different goal

[hallow igloo]

I just want to do it from scratch

[sudden hamlet]

the kernel, parser and compiler of the pyboard are unrelated to the actual hardware

[hallow igloo]

Yes

But I know nothing about hardware which is why I’m asking here

[sudden hamlet]

if you want to make your own board you can fabricate a PCB and stick a microcontroller in

but I'm not sure you'd learn that much doing that

compared to making something more specialised

[errant wigeon]

@hallow igloo it's a long writeup, and it can be a bit overwhelming, but this writeup covers a ton of what goes into the full process from assembling the board to booting a linux kernel https://jaycarlson.net/embedded-linux/

[sudden hamlet]

ooh nice

[hallow igloo]

I know names, diodes, capacitors, and, or nand, gates bread boards and stuff like that but I’ve never built anything and I don’t know how to

Ok thanks @sudden hamlet and @errant wigeon I’ll look into this

[errant wigeon]

to emphasize, this can come off as overwhelming. That's ok, it'll give you an outline of your goal and you can break it down into smaller sections and focus on being comfortable with those smaller concepts

[magic latch]

Yep

[hallow igloo]

What's a microcontroller

[sudden hamlet]

A tiny computer

normally has about 1000x less CPU power than a modern desktop processor

and even less RAM

[zealous island]

It is an integrated circuit that can execute instructions stored in memory

[shy zenith]

basically, a tiny, special purpose computer that only runs a single program, rather than an operating system

[sudden hamlet]

all good definitions 😄

[stuck thicket]

DESK OF LADYADA - Stemma Sunday & Happy Hanukkah - Prototype PCB Panel unwrapping https://youtu.be/xvFxzsEOUH8

[mystic jetty]

is there anyway i can power on my raspberry pi without a bulky phone charger

ive only heard of piwering it with a phone charger either or those big portable phone chargers

[sudden hamlet]

What's your goal

power it from a small battery?

if you want to use a small battery then a smaller microcontroller like an arduino is a better bet

[mystic jetty]

well

people told me an arduino would most likely burn my pi

@sudden hamlet unless you have tried it before

[sudden hamlet]

wat

i'm not suggesting using an arduino to power a raspi

what was your plan

with the arduino

that involves burning

[mystic jetty]

well i exaggerate burn

[mystic jetty]

so what do you mean by this, if not to power the raspberry pi with an arduino

[sudden hamlet]

replace the raspi with an arduino

don't use a raspi for something that's meant to be low power

but obviously that might be useless advice

if you're doing something which needs a linux computer

[mystic jetty]

oh

i was using the raspberry pi to stream a camera

the arduino would be to move motors and a servo

[sudden hamlet]

ah yep need the raspi then

why do you need it to be on battery

[mystic jetty]

because i want to make my project compact and tiny

[heady pasture]

maybe try a smaller pi , ex. Raspberry pi Zerow

[mystic jetty]

yeah definently

but i probably will have to power it with a portable charger

[woven ether]

@mystic jetty, have you looked at using a NodeMCU board? Cheap and cheerful although I am still new to microcontrollers

[mystic jetty]

ive never heard about it

[steep dune]

process modeling

[turbid prism]

is there a good way to network two raspberry pis with their bluetooth? trying to avoid wifi as the area Im planning to use them wont have it

sort of a node system where x nodes report to one master and that master node is connected to the internet

[violet valve]

@turbid prism There are software libraries that can do it, but I don't know them off the top of my head.

[turbid prism]

probably just need to mess around with bluez then]

cheers!

[violet valve]

Cheers!

@turbid prism Be aware that Bluetooth can get gnarly. If it's your only option, or you're really wanting a learning experience, go for it, but there are definitely simpler options.

Good luck!

[shy zenith]

Seems like you could use wireless just fine, with the one pi that's connected to the internet acting as the router and gateway for the other pis

[worthy thorn]

Somebody install P4wnP1 to RPI0w?

My raspberry doesn't make AP after reboot, and doesn't connect to WiFi

[stuck thicket]

WE ARE LIVE! SHOW AND TELL! https://youtu.be/dH7C1DHDnNA

[stuck thicket]

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[onyx glade]

https://stackoverflow.com/questions/65359700/send-8-bit-integers-over-serial-to-arduino

[hallow igloo]

What is a microcontroller?

[shy zenith]

A small, special purpose computer that runs only a single program instead of an operating system

They're much less powerful than regular computers, but also much cheaper, and can do some interesting things that regular computers cannot, like guarantee exactly how long running certain operations will take.

[hallow igloo]

Wait so say I wanted to send my self and email and I put a script into a micro controller. If I activated the micro controller would it send me an email?

@shy zenith

[shy zenith]

Sure, that's possible.

[hallow igloo]

where can I get one?

[shy zenith]

Adafruit sells microcontrollers that can run a flavor of Python called CircuitPython

[hallow igloo]

"a flavor"?

[shy zenith]

With lots of good beginner resources and excellent customer support.

[hallow igloo]

So is there like a button that just activates the microcontroller?

[shy zenith]

Could be, or it could just be a power switch, or something.

[hallow igloo]

ahh nice

[shy zenith]

A Python dialect that has a few differences than the one you're used to, but not many.

[hallow igloo]

Could you possibly refer me to a good but not to high priced python microcontroller?

And thank you for the explanations too @shy zenith

[hallow igloo]

Like a simple device that can run a script

[shy zenith]

https://www.adafruit.com/product/3857 for instance

[hallow igloo]

oh nice I might get that

Thanks man!

[shy zenith]

There are much cheaper microcontrollers available, but that's a nice start in terms of how powerful it is. Or see the Circuit Playground, maybe

[hallow igloo]

Do I have to assembled the M4 Express?

@shy zenith

[shy zenith]

https://www.adafruit.com/product/2900 for instance.

[shy zenith]

You'd need a soldering iron to attach the male headers shown in the pictures to it. So, if you want to add a screen, you're soldering something. If you just want to use it without wiring anything up to it, no assembly is needed.

And sometimes they give you a choice between buying a product with headers already soldered on or not

[hallow igloo]

ok so I can just get the M4 express and its pre setup? Great @shy zenith I think I might get that

[shy zenith]

It'll come looking exactly like it does in the first picture, with the two rows of pointy silver things that you see in the second picture in a separate bag, for you to attach if you choose, but the board is usable without them.

That one doesn't have WiFi, though

If sending emails was a specific example, you wouldn't be able to do it with that one without a separate adapter.

[hallow igloo]

so that basically cuts 50% of what I could do

so what can I do without wifi?

[shy zenith]

The usual reason for using a microcontroller is to interact with hardware in some way.

[hallow igloo]

someone from the adafruit discord showed me the py portal

I think thats what im gonna get

[shy zenith]

https://learn.adafruit.com/guides/projects

[hallow igloo]

Thank you for your time and help coldygeek

[shy zenith]

that might give you some ideas about some things you can do - and if you pick one of those projects out from the start, they'll give you ideas of what parts you'd need to buy to build it

[hallow igloo]

pyportal works right out of the box

[shy zenith]

yep!

[hallow igloo]

thank you man for real youve helped out alot

Ive been looking for this kinda thing for a while

just didnt know what it was called

[shy zenith]

one unique thing about microcontrollers is that they're often used with projects designed to run on battery, or run continuously, or things like that. So unlike purchasing most types of hardware, sometimes running slower, or having fewer features, or things like that are actually helpful, because they mean that it draws less power and can work longer.

there's also an adafruit discord server - the folks over there are super helpful.

[hallow igloo]

yeah I joined 🤣

[still raven]

This is so cool and a whole new world opening before my feet.

[queen vapor]

Have you ever used an MSP430? Im supposed to be learning that this semester in school

[halcyon bloom]

hi, I just recently discovered "micropython" but don't really have much programming / circuit experience

I am interested in creating a watch that functions as a random number generator

https://www.youtube.com/watch?v=x9oSJgCS4tw

^ realize this is not a rng

but it seems these watch platforms are compatible with micropython.

https://www.amazon.com/youyeetoo-LILYGO-Esp32-Display-programmable/dp/B08L4QH7J3/ref=pd_sbs_3?pd_rd_w=up7ev&pf_rd_p=ed1e2146-ecfe-435e-b3b5-d79fa072fd58&pf_rd_r=G9HV930GC0QR2FAP1QS2&pd_rd_r=0d7959db-755b-414d-a7b6-061f2ec5f274&pd_rd_wg=zfeFI&pd_rd_i=B08L4QH7J3&psc=1

other than that though, I have no idea where to start?

can anyone recommend me a pyboard // kit // learning resources to start this project?

[dry gull]

today i had my remote control circut board next to me and i wanted to play vr chat suddenly the circut board got a signal from vrchat and iknow that cause i did it 10 times and it only launches when im in vr chat (vr chat can send signals to my circut board so i wanna know what kind of signal is it so i can code it to do stuff or remote control from pc) so my question is (how can i know what signal is it ) also sorry for the long text i dont know any thing about what happend so im trying to explain ❤️

i have the same reciver as this

[stuck thicket]

DESK OF LADYADA - Brainwave Sunday + HiFive RISC-V Inventor Kit https://youtu.be/g4KgXtCxytw

[tawdry nova]

Hi guys I'm kinda new here so I don't know the exact format of how this works but I need some help with my raspberry pi. I want to send live video feed from the pi to my pc...the pi would be the client and the pc is the server...the pi always gets stuck on this line of code and I don't know what to do:

here is the bind line on the server side:

ignore the print lines

please let me know what the error is, thanks in advance!

[hard folio]

What is the error you get when connecting

Plus are you sure that the ip you connecting to is correct

@tawdry nova

Open command prompt do ipconfig, search for the ipv4 address and try to connect to it on the same port, if you still face issues then you will have to send the error which you getting

[tawdry nova]

@hard folio I'm not getting any errors in the console on any side and I have connected the server to my PC's ip (through ipconfig) 192.168.0.19 is the pc's server ipv4 address...Actually on the client side after a while the following error comes up:

[tawdry nova]

@hard folio i figured it out it was a firewall issue, thx for the help!

[hard folio]

Ok good

[tawdry nova]

@hallow igloo i think you can just use Python sockets...

[tawdry nova]

@hallow igloo So Python has a socket library (check it out on Python docs) which is called socket adn they you can set one PI as the server and the other as a client and communicate between the two.

[steep dune]

yes you can - if you really try

[hard folio]

Huh

[waxen jay]

@hallow igloo sockets is one option (import sockets, and then read the docs)

Alternatively, you could use some higher level protocols

Or libraries rather

Such as ZeroMessageQueue. ZMQ for short. pyzmq is the package I think.

@hallow igloo Reliable and fault tolerant networked communication is really not a trivial thing to achieve.

[waxen jay]

I mean that with sockets and similar entities used for communication there are some thorny problems. Such as knowing if you are still connected?
Think about the situation:
Your device (one RasPi) wants to listen to another computer and receive data and respond. Say you have connected successfully. If the connection breaks, what happens depends on the connection method. UDP sockets just fall silent. TCP sockets should signal that the connection is dead, but they might not. If you try to receive messages from such a socket you might:
a) Encounter an exception,
b) get stuck and the code blocks for eternity,
c) get 0-message (b"")

To avoid this you must perform some sort of pinging and be ready to handle any and all of those cases above

Basically all solutions involve threading of some kind. And with threading, come race conditions and issues of asyncronicity.

I thought the same. It's doable, but fun little adventure. You probably want to use sockets.

Though then there is the issue that you probably have no public IP

What that means, your PC might not have an IP address that can be connected into from outside promptly. You PC initiates all connections itself, and then servers respond. If neither your PC nor your RasPi have public IP address, then initiating the connection is hard. There are ways around it, but they require some work.

I'm not saying this to downplay you, or to try to discourage you. I love doing small IoT-like stuff myself. Just trying to shortcut the hurdles I encountered for you.

So to find out about your IP-situation: Are you using a mobile tethering, some kind of sim-card using dongle, or Cable/fiber/adsl router?

Small embedded devices that are connected to the internet. Like lightswitches, garage doors with remote command, drones, gps trackers, etc

ok. Your router might have a "bridge mode" setting in it's settings page. Turning that on should give you a public IP address

When you have a public IP this is how the stuff works:
One python code (the "server" side) goes:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.bind("0.0.0.0",9999) #example port sock.listen(4) while True: client, address = sock.accept() do_smthng_with_client(client)

The client side goes:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect(("122.76.144.112,9999)) #example address. put yours here. Port must be the same as above sock.send(b"Hello there!")

So like when I got sth in my hands and pull it up 30 cm, it knows that?
well, accelerometers can sense movement (acceleration) but direction is harder.
Based on my experience barometers (air pressure sensors) are pretty sensitive and can sense the difference when they are lifted from floor to table height

Though air pressure sensors are sensitive to all changes in pressure. Such as someone opening or closing a door in the same building.

No they are not. Or if they are, they need to integrate data from several seconds to smooth out the static noise

If the only sharp movement the device will experience is the upward lifting, then accelerometers are the best bet. Though it's not easy to differentiate between sideways motion and upwards motion. Especially if the device is rotating/turning more than a few degrees max

Basically accelerometers will give you acceleration many times per second for all three directions (x,y,z). But they are direction of the sensor. And when resting on a surface, it gives a solid 1g to some direction.

@hallow igloo Care to hint what it is you are designing? Maybe I've done some boneheaded mistakes related to that and can save you the hassle ^^

[waxen jay]

Hmm. Accurate hand position might be hard to achieve. Rough motions are a lot easier though.

[waxen jay]

Well. The acceleration form hand movements is somehwere between 0.5-7 m/ss Earths gravity is about 9.81, and that will always be present there. The accelearations combined are a vector sum. So sharp downward movement will show as anomalously low acceleration to any direction. Freefall is exactly 0-vector obviously.

My point is that a function was_there_an_upward_movement(X) for some 3x200 matrix of measurements might not be straightforward at all to do.

And: It is almost certain that the highest acceleration measured at any moment is if the device is put onto a flat hard surface, unless you handle it like a glass rose.

[waxen jay]

Hmm. What's your bacgroud? Mathematically speaking.

Merry Christmas btw!

Like, are you highschooler, university physics student, or...

Okay, well if you are doing stuff with accelerometers by yourself, it's going to be pretty hardcore.

[waxen jay]

If there is, I'm not aware of it. Hacking a VR controller maybe gets around the hardware issue, but is hard too.

But you should absolutely try! The components are like 25€ total from eBay

And you will learn a lot of interesting stuff, that's guaranteed.

Interesting in the sense of "sweet hesus, is it this easy to build remote detonated b*mbs?"

[sudden hamlet]

well the hard part of remote detonated bombs is the chemistry

i.e. the bomb

which i am not going into

i've always assumed you just wire the sound wire from a mobile phone to your detonator

but then i have no idea how bombs work so

[waxen jay]

Well it's a bit more complex. From my experience there are farmers who know perfectly well how to make the stuff from fertilizer, but they are not savvy with electronics

... also, Merry Christmas to all the nice folks at NSA

[sudden hamlet]

tbh from my alevel chem i'm pretty sure i could make a decent bomb

but i'd probably blow myself up in the process

you'll also need a board to drive it from

like arduino/pyboard/maybe raspberry pi

well like an arduino

your computer has no GPIO functionality

it can't read digital voltages from pins or anything

ah nice

that'll work

you probably communicate with the accelerometer over spi/i2c

communication protocols

to get the data into the raspberry pi/arduino

[waxen jay]

Spi and i2c are data tranfer protocols. Ways small stuff like accelerometers talk with Raspberry Pi, or other computers or microcontrollers

Well.. RasPi has certain pins dedicated to SPI. Others to I2C. When you buy a sensor module, it usually uses one of these. Then you wire pins from the sensor to the RasPi, and use the correct libraries to talk to it

So you must know the protocol to do the wiring right. Not a big deal really, but just a thing that has to be kept in mind

(Sidenote: You have some balls trying stuff like this with your level of knowledge. Keep going, you shall not regret it)

What you need is: Accelerometer, RasPi, some pin connector wires, and probably a microcontroller, since you will eventually want to work with one.

[sudden hamlet]

like a tiny computer

the processor on an arduino or micropython board

and arguably raspberry pi

and slightly less arguably on any computer

[tropic hornet]

microcontroller are devices that can be programmed to do a specific task (such as turning on lights , doing some specific output on a specific input)
they arent computers(as they dont have an os and cannot do multitasking) but as a part of a computer
they are mostly programmed in c/c++ language
For eg Arduino atmel pic microcontrollers

[tropic hornet]

rpi isnt a microcontroller its a hand held full fledged computer

[sudden hamlet]

Well arguably it has a microcontroller on it

Although also arguably not

But I think it's important to make clear that there isn't really any magic difference between a consumer cpu and a microcontroller

[waxen jay]

@hallow igloo : Microcontroller is a small programmable computer that (in usual meaning) does not have an operating system. They are (again, usually) programmed with C, and because of these features they are:
Very cheap, hence can be embedded absolutely everywhere; Small, fit everywhere; Consume very little power; Not very powerful performance wise, and considered quite reliable since there is less stuff going on, and thus less stuff that can go wrong.

An important characteristic of MCUs (microcontrollers) is that since there is no OS, all computations happen in quite deterministic sequence and time. This is important when controlling mechanical devices. For example motor drive units must be accurate in their job by fraction of a millisecond.

It might not be readily apparent, but in python for example, if you call time.sleep(1.0), the program does not usually sleep exactly 1.0 second, or anything particularly close to 1.0 second. It will tell the OS to put the program aside for at least 1.0 seconds, and then check back please, if the OS would be so kind. The OS might take 1.0s, 1.01s, or 23.5s if you froze it up somehow.

The jitter is quite large. I first encountered this the hard way when I tried to control more than two stepper motors with RaspberryPi. The step impulses arrived out of synch and the motor movements were horribly noisy and shaky.

With MCUs, you can craft control loops that take essentially constant time to run.

[stuck thicket]

Had a few things to do today @stuck thicket -- season's greetings to all the makers out there! Have a happy healthy holiday!

[waxen jay]

Yes obviously. RTOSs mostly.

[hallow igloo]

hello, can anybody tell me if we can program Arduino with python?

[wheat loom]

Awesome! Have a great holiday too!

[hallow igloo]

So im using btlejack for my own bluetooth device and I need a micro bit. Is there any easy to use ones for cheap out there?

Like already assembled I just connect it to my computer

[craggy ember]

@hallow igloo what board?

[proven temple]

Any good tutorial videos on how to get into this, ping me please

[last whale]

@hallow igloo https://www.amazon.com/Baoblaze-MicroPython-Professional-Electronics-Development/dp/B07FQSQJTC

[last whale]

You're better off using a pyboard imo

[hallow igloo]

arduino nano..

[earnest mulch]

How can we use python for reading data in real time

I mean just the process

[last whale]

See: https://problemsolvingwithpython.com/12-MicroPython/12.05-Reading-a-Sensor/

[craggy ember]

@hallow igloo I am not sure the nano can run MicroPython do you have access to an ESP8266?

[trim harbor]

guyes i was thinking of getting into programming microcontrollers and stuff

can you plz suggest some resources?

[fast elm]

https://github.com/lvidarte/esp8266/wiki

[trim harbor]

thanks

[fast elm]

you can get esp8266 pretty cheap from aliexpress. I'd recommend nodemcu v2 dev kits, as they got all you need on the board to start doing something, and they fit well on breadboards.

Also grab some ws2812b (aka neopixels) leds and ds18b20 temperature sensors to experiment with 🙂 Pretty cheap, and let you start doing something useful / fun right away

[trim harbor]

i literally know nothing about microcontroller programming 0 experience

searching resources to get into this field

[fast elm]

yeah, those I listed are good starts. If you don't have , also pick up a breadboard or two, some resistors and dupont cables. You can have a basic starter lab for under 10 dollars. For breadboard and dupont cables, just search and you'll find. For resistors, get a starter package with sets of different ones, since you'll need a bit of varying resistors for different projects. They don't have to be exact value, so if you get a set with 5-10 of each size and 5-10 different sizes spread out a bit you'll have a good resource start

that page I linked explains what an esp8266 is, what a nodemcu board is (and it's pins), how to install micropython on it, and some examples like controlling neopixels

[trim harbor]

esp8266 is it widely available everywhere? like is it easy to find

[fast elm]

it's a very cheap microcontroller originally meant to be used as wifi bridge for arduinos and other stuff, but it's powerful enough to run things by itself

it's a lot of chinese sellers selling it, and because of it's price and capabilities it's become a popular hobby chip

esp8266 is the chip itself, but you need power supply, serial port connection, access to the pins on it and so on. Nodemcu is a popular board that combines all that and an usb-to-serial converter, plus it can take power from usb. So with those all you need is a microusb cable 🙂

[fast elm]

Not sure if this fits the channel, but I made a small list of items for a sort of "starter kit" for him at https://www.notion.so/terrasque/Electronics-Starter-kit-a76bdbd9115646cf927e4c7784341ba2 - maybe it can be useful for the channel. And if anyone have tips or comments, let me know

[trim harbor]

+REP

[zinc axle]

Hey I have a project and I wanted to connect to a raspberry pi and attatch a camera to watch the behavioral differences between 2 fishes, by watching movements between them. My question is where would I go to learn more about python about this? I just finished a CS101 class with python and taught me the basics of, Dicts, for loops, while loops, recursion, tuples and fileIO. My friend said I have still yet to learn about Objects, which is necessary for this project, is this true? and How should I move forward?

[south ether]

Very true

Object Oriented programming is a beginner level concept that youtube or coursera will teach you all about. Shouldnt take a few hours to get a good grasp and get you coding

For the project however, you'd have to define what 'behavior' is in your fish

what do you do want the camera to be watching with your fish? Is it tracking its movement pattern? speed? size growth? you'd have to be very specific

You'd be in the field of computer vision and would probably heavily rely on OpenCV

go to pyimagesearch, that guy has a ton of great lessons on how to get started with OpenCV

[hallow igloo]

yes sir.

[craggy ember]

@hallow igloo great! MicroPython will work perfectly on that. There are a number of great tutorials on the web such as Null Bytes one: https://www.youtube.com/watch?v=j0hgKkwmSlw

[hallow igloo]

Thanks you sir for the help...

[craggy ember]

Welcome!

[dry gull]

hi

does anyone know about radio transmitters please tag me if you do

[dense night]

Else you can also look for ESP32 which is similar

https://files.readme.io/854b6cc-esp8266-esp32.png

I see them about the same price these days

[worn lava]

I am planning on making a homemade atmega32u4 board with a usb port. The chip has a bootloader preinstalled right? Will it work with the arduino IDE if not what program can I use to load a file onto the chip?

[trim harbor]

did a little research and in some cases arduino uno works with micropython but in some it does not

plus its a little lengthy process to connect the chip

[steep dune]

connect the chip --- how so?

[stuck thicket]

WE ARE LIVE! SHOW AND TELL! https://youtu.be/z4ZEFckar60

[visual sand]

yo i’m using an esp32 microcontroller i’m wondering if there is a way to code it with python or a derivative of it

if anyone has experience with that help would be much appreciated

[sudden hamlet]

You can probably use microython

But you also probably shouldn't

Easier to learn cpp

[jade swan]

interesting

alr i guess you have your answer ben

i think ill pass on this business venture

[fast elm]

Micropython works pretty well on it

I've been using micropython on esp8266 (it's weaker predecessor) for a few years with pretty good success

[visual sand]

nice, ty so much

[visual sand]

@fast elm what are the differences between micro python and normal python?

[fast elm]

It's mostly a complete python3 implementation. It's missing (or have a stripped down version of) many built in libraries, but that's mostly the extended collection. The core ones are mostly there (or have a lightweight version)

[visual sand]

awesome

[fast elm]

There is also a few limitations on memory allocation iirc, but nothing I've encountered in practice

[visual sand]

im thinking i might use it in one of my projects bc i can’t code cpp for shit

ok awesome

[fast elm]

https://docs.micropython.org/en/latest/genrst/index.html

There are a few edge case differences, documented there. Also https://docs.micropython.org/en/latest/library/index.html has a list of the lightweight modules replacing built in ones

[visual sand]

ty, this is super useful info

[fast elm]

No problem, and good luck with it

[visual sand]

thanks

[hallow igloo]

Any PLC programmer here?

[visual sand]

no sorry

[spark robin]

is working on micro controllers with python a good idea...?

or should I stick with c/c++

I'm talking about

ardiuno

btw

[rough willow]

You're probably better off just sticking with C++ imo

for arduino atleast

Depends on what you want to do tho i guess

[fast elm]

I use those LEDs with 5v power supply and 3.3v logic level. Had worked fine for me

[fast elm]

For simple things, if micropython supports the board then sure, it works pretty well.

[sudden hamlet]

hmm

well first step would be to try to characerise them

in this case, it's a sudden sharp increase followed by a gradual increase of about half the size

followed by a sharp increase of about the size of the original

etc etc

so (with some hysterisis or smoothing) you could detect those trends and say a bar has happened when you detect all of them

[sudden hamlet]

yeah that's what i'm suggesting

but with multiple stages

[errant wigeon]

@sacred roost Is there a reason you can't zero out everything with an amplitude near 8 (in the case of this graph) and then run a high pass filter on it?

[errant wigeon]

the high pass filter just detects regions of rapid change, the zeroing of anything at about the value of 8 is just normalizing

[sudden hamlet]

yeah depends what you're actually trying to characterise i guess

it would help to know what this signal actually is

and what false positives you might encounter

[stuck thicket]

DESK OF LADYADA - Happy New Year - It was a Featherfull long weekend https://youtu.be/1RC5X6qOYYE

[errant wigeon]

as in fast fourier transforms (usually there's an implied discrete ahead of it)? yeah what's up? I'm not the best with it but it's a core for a lot of signal processing

[opal furnace]

I am having a hard time getting a set of ESP32-CAM units up and running with uPython. I grabbed firmware from https://github.com/lemariva/micropython-camera-driver and tried to install it, but to no avail. The first unit took the firmware and booted into uPython fine, and I fiddled with it for a while, but the second unit never did. I recently checked the first unit through a serial terminal and found that it has since lost the firmware. When I reset the chip after running the commands described there, I get the following message in the terminal:

ets Jun  8 2016 00:22:57



rst:0x1 (POWERON_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2))

waiting for download

This looks like the stub that installs the firmware is still running, instead of the uPython firmware. How can I fix this?

[opal furnace]

problem solved. I needed to unjumper IO0 and GND in order to use the board after programming it.

[sweet frost]

Just to be clear. This is "microcontrollers" as in "robotics" right?

Just to be clear. This is "microcontrollers" as in "robotics" right?

[tropic hornet]

microcontrollers have vast usage

its not limited to just robotics

microcontrollers are used in many devices and many stuff

[sudden hamlet]

but it's microcontroller as in robots rather than microcontrollers as in

idk

[stuck thicket]

WE ARE LIVE! SHOW AND TELL! https://youtu.be/HupzVqFkf9s

[tropic hornet]

@viscid bane

[viscid bane]

yes

@tropic hornet

I believe discloud is easier?

cuz I'm also trying to host my bot

[tropic hornet]

sure you can use that

bur

but raspberry pi would be more flexible

as you have the control over your server

and you can self host it using rpi

[viscid bane]

and if I do have updates in my code in vs code so will it save changes?

or we have to write in raspberry?

[tropic hornet]

you can install vsc in rpi

rpi uses a linux os

linux distro called raspbian

[viscid bane]

Umm i'll search raspbery

pi

[tropic hornet]

yeah

[tropic hornet]

its a handheld computer for about 15 dollars

if i remember correctly

you can make robots / home automation/ streaming services/ hosting purposes

and lot more

[viscid bane]

but I can't download as my comp is filled

and im broke asf

lol

[tropic hornet]

raspberry pi isnt downloadable

[viscid bane]

oh lol

[tropic hornet]

its a hardware device

[viscid bane]

but still

cant buy'

gotta use DisCloud ig

[tropic hornet]

look tbh let me give you a heads up

there as no free vps hosting

even if there are

it wont be very reliable

[viscid bane]

DisCloud has low mb rate tbh

[tropic hornet]

hosting companies also needs money for their servers

[viscid bane]

yeah

[tropic hornet]

so instead of just looking for a vps

you can self host

[viscid bane]

by?

[tropic hornet]

its a good investment and you will have a lot more control

[tropic hornet]

rpi

its my opinion

i am not suggesting or tell you to do anything

[viscid bane]

but im just 14 and can't buy as we are running a little tight in here

yeah

I got no choice

I wanted rpi but can't rip

well nvm thanks for tips tho I really appreciate it! @tropic hornet

[tropic hornet]

np

[tropic hornet]

@viscid bane there is a way to host for free

[viscid bane]

umm go on

[tropic hornet]

you know repl.it

also lets discuss about this in dms

[rapid horizon]

What is the best place to host python bot ?

zeet.co, Heroku.com,, or something else ?

[eternal cairn]

If you are not so serious about your bot
I once host my python bot on google colab LOL

[hallow igloo]

I am hoping to run this on an ESP32 Cam Module -
I am going to be using micropython, I am going to determine which GPIO pins I am going to use via a series of API calls, that I have created. These calls aren't very quick and can last up to 7 seconds- bad servers but works for what I need. But there are multiple API calls that I need to make and don't want to wait for the each call to finish. Instead, I would like to do these concurrently, alongside the operations that will be determined by the API call. How would I do this? I have looked at uasyncio, however, this only seems to work when you know how long each call is going to take. In my case I cannot work this out as it varies ±3 seconds. I was hoping that I could somehow do multiprocessing but could find out how to do this in micropython on teh ESP32 cam, any help would be much, much appreciated. Thanks Again,
Please @ me if you reply!

[echo iron]

Hi all I do not know if the question is asked in the right channel. I want to read 2 serial (COM/Windows) sensors with say 200Hz frequency and want to store this in a database (or other persistance storage) and maybe do some business rules/or transformation (simple). How would you (and could I) do this with Python?

I do now want to run Python on an MCU. I just want to do Data Capturing/Collection.

[tropic hornet]

so you want to log in sensor data right?

using python and mcu

[echo iron]

mcu>

?

Why? I have just serial traffic on 2 serial ports

And a PC/Desktop with Python and a Database? to store it?

[tropic hornet]

hmm

[echo iron]

I do not want to run Python on the sensor

[tropic hornet]

i know that

you have a microcontroller right?

[echo iron]

The sensors are blurring messages 115200 baudrate at the serial line on say COM4 and COM11

[tropic hornet]

what is the name of it?

[echo iron]

they are incline sensors

[tropic hornet]

incline sensors

what are those?

[echo iron]

Nope no microcontroller

does not matter there is no MCU involved

Not for me to interact wsith

with

I want to do datacapture realtime sensor data

and make it persistent

and do some "business" rules

[tropic hornet]

oh i see

[echo iron]

Something like talologger: https://olammi.iki.fi/sw/taloLogger/

so pySerial and a database like SQLite or something?

Will this be fast enough

?

[tropic hornet]

hm yeah you can sqllite

or postgres

it depends upon how "fast" you want

[echo iron]

sqlite will it be fast enough... hmm nice is one does not need a seperate instance of a db

200Hz per sensor

[tropic hornet]

you want to have very high speeds

[tropic hornet]

yeah you can use that too

[echo iron]

Oke i will look into pySerial and streaming solution in Python

[sudden hamlet]

there are better ways of storing lots of time series data than mysql

[shadow sluice]

For this I would suggest InfluxDB ... here is good example of similar project as yours: https://www.youtube.com/watch?v=JdV4x925au0

[fast elm]

well you would need uasyncio, but I don't think there's any http library for micropython that support it. And making your own http library can be a bit challenging

@hallow igloo there is a http example lib at https://github.com/micropython/micropython-lib/blob/master/uasyncio/example_http_client.py using uasyncio but that's very basic and you probably need to jazz it up quite a lot

[hallow igloo]

Hmm that is unfortunate, this is how I am going to solve it. Originally I was gonna have an esp32 cam module and esp8226 communication wirelessly, however if I replace the esp8226 with a rpi0w I can access the internet to send the api calls and will use a hotspot from a phone which will allow the interenet for the call, allow multiprocessing/asyncio- whichevere I choose to use with requests. And I can access the ip camera as I will use the device's IP address

@fast elm

[fast elm]

I was going to suggest moving the heavy lifting from the esp if you don't want to make an async http lib

[pseudo wren]

could I wire 2 2channel motor drivers in parallel to control 4 motors

[echo iron]

Say I want to log data from 2 serial ports concurrent and simultanous? What could en would be a suitable stack?

[fast kettle]

hi

Can someone please help me and talk to me about the RPi.GPIO for raspberry pi ? I am using python. and I am trying to take a simpe input from a button and have the terminal print out "button was pressed" ? simple right ? well for some reason the buttons aren't picking up ANY input even if i try different wiring set up or different button, still nothing. I have tried looking up many youtube tutorials and read through the RPi.GPIO documents. I am fairly certain it isn't my script that is the issue here, I want to lean the problem down to figuring out if its a faulty connection to the button or something

please @me if someone can help.

[sudden hamlet]

Does other gpio functionality work

[stuck thicket]

DESK OF LADYADA - 'Spressif Sunday - We try out our ESP32-S2 Feathers https://youtu.be/oR7uGy8ea68

[hallow igloo]

hey

anyone here

[calm folio]

are you using gpiozero?

[fast kettle]

What’s that @calm folio

[calm folio]

its a python module for gpio pins

its hard to explain

im not rlly good at it

[wheat loom]

Can you test if the two power GPIO work?

[obtuse moon]

You know it

[stuck thicket]

WE ARE LIVE! SHOW AND TELL! https://youtu.be/y0PAlNZM4aI

[stuck thicket]

WE ARE LIVE! ASK AN ENGINEER! https://youtu.be/rpMgL30fgX4

[steep dune]

start with - turn LED on/off

[main ridge]

how to send info to pc using an rs232 with an atmega32?

[floral pier]

whats the best rasberry pi to buy?

[wheat loom]

The best? The 4b 8Gb

No idea if it is a good compromise for you though

[barren kernel]

Depends alot on the project, and how you define best.

Best as in fastest? raspberry pi 4 8gb ram.
Need something small with internet? get a zero W
Need something cheap? raspberry pi 3 is quite cheap

[open cedar]

Is the orange pi zero a good choice? I want a pi zero with Ethernet

I don’t wanna buy multiple adapters

[rain peak]

Orange Pi Zero is totally different from Raspberry Pi Zero. Raspberry Pi has better software and forum support. Orange Pi is for advanced programmers.

[past epoch]

using something like an arduino to measure weight and display it. What do I really need?

Load Cell
Arduino Uno
LCD display

Do i need some sort of controller to connect the load cell to?
I have been Looking at the HX711 but I cant figure out if I need it or where to buy it. I would rather just buy everything I need at adafruit because then I know it will arrive within a few days.

[hallow igloo]

Where can I start learning robotics for python

[sudden hamlet]

which load cell will affect whether you need a controller

you need an ampplifier

but it looks like the hx711 uses a standardized serial protocol with a library available for arduino

[hallow igloo]

Oops wrong channel sorry

[past epoch]

https://www.adafruit.com/product/4541

so how could I tell?

im guessing I need one, but i dont know for sure

so this load cell, the HX77 and some controller, either arduino/circutpython/rpi ?

[sudden hamlet]

The hx77 is a controller

I don't know if it's an amplifier as well

Looks like it might ve

[past epoch]

oh.. i read amplifier on the data sheet

so its probably both

[sudden hamlet]

I saw a couple of tutorials on how to use it with an Arduino so they should be a good reference

In that they'll tell you exactly what you need to get it working

[past epoch]

yeah.. they told me to get the hx77 and im having trouble getting that thing

but ill try to order it somewhere and hope they have express shipping as an option 😄

its a school project for my son

and i thought i just needed the load cell to get it working

[stuck thicket]

DESK OF LADYADA - STEMMA Sunday - ISO1540 & SHT40 breakouts, TikTok'in, Quad Mics, and some LC709203 debuggin' https://youtu.be/c_0uDYDNDxA

[brittle stirrup]

Hy 🙂
What tool do you use to talk over webrepl? i was using Thonny until now, but its webrepl support seems pretty broken and i need esp8266 uart for my application so that's no good. Any recommendations?

[kind ice]

My Adafruit Feather M0 Express was working great until I did a recent bootloader update (3.11.0), now Windows regularly gives me the finger when I plug it in ("last device malfunctioned, Windows does not recognize it"). About 60% failure rate.

Opinions? Is this a driver issue, or did I break my Feather?

[marble sandal]

micro means small

[violet valve]

If it works some of the time, it's not the board. What's in your INFO_UF2.TXT file (which I believe is on the board in bootloader mode)? I want to verify that you used the right bootloader updater. The other option is to run the USB device cleanup tool found here, https://www.uwe-sieber.de/misc_tools_e.html , with the Feather NOT plugged in, and see if that helps. Sometimes Windows hangs onto older instances of devices and then doesn't play nice.

[spark robin]

How to use api on micropython...?

I'm using esp8266 and I have conected to wifi...

[kind ice]

UF2 Bootloader 3.11.0 SFHWRO
Model: Feather M0 Express
Board-ID: SAMD21G18A-Feather-M0-Express-v0

[violet valve]

@kind ice What version of Windows are you running?

Looks like the right bootloader, so that should be fine.

[kind ice]

Windows 10 Home. Just did a pretty lengthy update a few days ago, that tends to break things but I don't think it's the issue here. I have a few other boards, Trinket M0s and QtPys, and they are 100%.

Another issue that may or may not be relevant, I keep an unaltered copy of the original code.py script that came on the Feather, to steal snippets of it to try in my scripts. It no longer runs in the feather. I haven't had a chance to go through and see exactly what it's hanging up on.

[violet valve]

Did you also update CircuitPython? It might be relevant.

[kind ice]

adafruit-circuitpython-feather_m0_express-en_US-6.0.1.uf2

[violet valve]

That's the latest stable version. Chances are it shipped with less, which could explain code.py stopping working. Also, if code.py expects any extra libraries/modules, they could have been wiped with the updates, and that would also make it fail.

Actually, code.py would have been wiped too, so that might not be it.

Unless it was wiped and the code.py on there now is the default "Hello, world!" created by CircuitPython on install. Have you checked the content of the file since you updated?

[kind ice]

Now that you mention it, I checked that and made sure all the libraries were still in /lib, and they were still there. But I did not change any of them. I think my next step will be to delete the libraries that are in /lib and replace them with new copies from the current library.

[violet valve]

As long as your code.py is consistent with the libs that are present, it should work. If you update your libraries, you will likely have to update code.py. Simply an FYI

But that is a good step.

[kind ice]

I have also noticed with some of the older scripts on the Adafruit site, they don't quite work as-is. Syntax can be a little off.

[violet valve]

Exactly.

[kind ice]

Thanks for everything.

If I don't have any luck I may need to pick your brain again. 🙂

OBTW: I missed part of your question above. I copied out the original code.py before I changed anything. For better or worse, it's exactly as it was when I receive the board.

[violet valve]

You're welcome! Feel free.

Yeah, those files eventually stop working with CircuitPython updates.

Something isn't quite right after a while. 🙂

[kind ice]

Well, there's still some good code in there, and I've used bits of it.

[violet valve]

For sure! It's usually something simple like an import format changed, or a particular function call was moved somewhere else and requires an update.

Rarely is it the entire thing failing. It's almost always something small and specific.

[kind ice]

Well, I was going to update the libraries and I think I just discovered my problem, and the reason it's persistently worsening.

It's mechanical. The USB port is making intermittent contact, if you hold pressure down on it, it works reliably. But loose it may or may not. Tried it with a different cable, no difference. Maybe I can reflow the solder joints, but if it's inside the connector that won't help. New connector time.

The timing lead me to believe that it was the update, but that's apparently just coincidence.

This leads me to the dilemma, does the cost of replacement justify the repair?

[violet valve]

@kind ice That's a personal decision. 🙂 My soldering skills are likely not up to handling that kind of repair. If yours are and you have the parts, probably worth at least trying? Good catch though! I'll add that possibility to my lexicon of potential problems for future reference.

Thank you for the update. I had involved a colleague in this one because he's more familiar with Windows use than I am. I updated him as well.

[timid hazel]

good evening, may I ask something here?

[signal shell]

yes

[iron prairie]

Hello I am new to discord python community, could anyone point me to a few useful video tutorials of microcontroller programming using Arduino

[umbral vector]

One of the admins, Zig, recommended the adafruit site: https://learn.adafruit.com/

Hope that helps :D

[timid hazel]

does anyone know a website where I can I find job's posts related to electronic engineering?

[umbral vector]

Hmm, I think any normal job search site would be fine if you filter for electrical engineering

[umbral vector]

@timid hazel You could also ask in #career-advice

[timid hazel]

thank you very much

[umbral vector]

Aside from that, you can also join the adafruit channel in #315249263103967242

[stuck thicket]

WE ARE LIVE! SHOW AND TELL! https://youtu.be/MaTDmvLFVfw

[willow kernel]

https://hackaday.com/2021/01/20/raspberry-pi-enters-microcontroller-game-with-4-pico/ Thought this might pique some interest in here

[errant wigeon]

I'm looking forward to getting a few. Sadly adafruit is sold out already but sparkfun still has them in stock (for US vendors at least--not sure the supply elsewhere)

[wheat loom]

That looks very interesting

Damn, if they actually sell at $4, that's a serious new competitor

[errant wigeon]

it's cheap enough that shipping is double or triple a single board which is a crazy awesome problem

And now it's in stock at adafruit

[wheat loom]

Yeah, that's a good point

15€ minimum of shipping to France O.o

[errant wigeon]

It looks like raspberry pi has a few vendors in France, Kubii I think has them? I've never used them and don't know french so I'm most guessing off of their site

I think the raspberry pi group have a list of various vendors for a lot of countries if Kubii isn't an option

[wheat loom]

They do have it, but in 8 weeks haha

[errant wigeon]

ugh lol well 8 weeks to think of projects I suppose if you get it through them

[gentle vapor]

mchobby seems to have stock

[wind trail]

Ok so I have a rasberry pi, how am I able to connect it to car keys to unlock/lock a car.

[sudden hamlet]

pico my interest

[sudden hamlet]

wow really?!

i was wondering what the point was until i knew that

[wheat loom]

Yeeeeeppp

[signal shell]

https://twitter.com/TensorFlow/status/1352363336877416453

TensorFlow (@TensorFlow)

🌟 @Raspberry_Pi introduced their first microcontroller, the Raspberry Pi Pico! We'll be releasing a port of TensorFlow Lite Micro for it soon.

Check out the GitHub here → https://t.co/S75ligH1jr
And learn more here → https://t.co/dzn95Xe5Dq

#TinyML

Retweets

106

Likes

456

Twitter · Jan 21, 2021, 9:11 PM

great news

[rapid escarp]

does anyone know a good place to start with programming python on the rpi with gpio?