microcontrollers

[elfin sphinx]

yes, there are some python libraries and some microcontroller specific libraries in it

[hardy adder]

Oh okay

[elfin sphinx]

you can read more at https://docs.micropython.org/en/latest/rp2/quickref.html

[hardy adder]

Noted, thx bro

[elfin sphinx]

👍

[smoky meadow]

lf for someone who can help with basics of raspberry pi pls @ me

[elfin sphinx]

just ask your question

if someone knows theyll answer

[smoky meadow]

just trying to make a wifi connection with my laptop and raspberry pi

#1182294312097169479

[hallow igloo]

https://www.reddit.com/r/techsupport/s/qnZhCfFCJx

Idk if someone can help me abt this, but that would be helpful

[elfin sphinx]

is it possible ? sure (just bypass the internal charging circuit with an external lipo charger module

will it be as elegant ? unless you are extremely delicate while opening it and adding that extra circuitry , NOPE

[hallow igloo]

Can't I just re-solder

[elfin sphinx]

resolder what ? to where ?

you mean , the charging speed was great but its now pretty low ??

[errant wigeon]

It looks like the headphones use a lipo (or the most common replacement battery is a lipo). Given that, I'd personally advise against messing with the charge current. Lipo's can quickly become spicy pillows when you mess with their charging current and they're not fun when they catch on fire

[tulip cargo]

hello everyone,
I am a new user of esp32 using micropython and in this field in general, I am facing a problem with sending data from the esp32 to a server using http request, Idk if it the best solution to use http requests to send a file, I have heard abut ftp, but I have no idea about it, and Idk what are the best protocols to use in this situation, I will be thankful for any help or guidance from you, and thanks in advance.

[elfin sphinx]

what kind of files are you sending ? what is the size of these files ??
where is this server you are talking about hosted ?

and also where does esp32 come in picture in all of this ??

[tulip cargo]

it is a csv file, the size is 39kB, the server is in the local host, and I have a hand on it

[elfin sphinx]

then plain http transfer is just fine

[tulip cargo]

ftp_password = 'rNrKYTX9g7z3RgJRmxWuGHbeu'
import ftplib

# Initialize FTP client with longer timeouts
ftp = ftplib.FTP(timeout=30)

try:
    ftp.connect(ftp_server, ftp_port, timeout=30)
    ftp.set_pasv(True)  # Enable passive mode
    ftp.login(ftp_user, ftp_password)
    print("Connected to FTP server")
except ftplib.error_perm as e_perm:
    print(f"FTP Permission Error: {e_perm}")
except ftplib.error_temp as e_temp:
    print(f"FTP Temporary Error: {e_temp}")
except Exception as e:
    print(f"An error occurred: {e}")
finally:
    ftp.close()

Started webrepl in normal mode
An error occurred: Could not connect to ('44.241.66.173', 21)```

I got this error while trying to establish an ftp connection between esp32 and the server

[errant shell]

How is your ESP32 connected to the network? Are you sure 44.241.66.173 is the correct IP address? Which FTP server do you have running at that IP?

[torpid verge]

Using urequests (now renamed to requests) is the standard http client. You can open a file and then send the stream, that way there is no need to allocate a 39kb buffer. There is also aiohttp in case you use asyncio (take a look at asyncio if you haven't)

[covert ore]

Could someone help me with code?

[elfin sphinx]

dont ask to ask , just ask your question

[shy vale]

which microcontroller is best for running DL models like YOLOv5

arduino, stm or esp32

can't go beyond that due to budget constraints

i want the MCU to communicate with multiple devices and run YOLOv5 which gets input from a camera connected to the board in real-time

i have looked in to NVIDIA jetson and rpi, but i am hoping for something on the cheaper side

[errant wigeon]

Unfortunately at that scale you're probably not going to be able to run much in the way of a deep learning model on a micro. beyond that, to get the yolo stack to work you're going to need at the very least an embedded linux environment like you have on a pi or Jetson and you'll need to compile PyTorch for the hardware architecture as (at least this was true recently) they don't build for that hardware (so there's no wheels). There are cheats where you can stream data from a micro to a server, run a model on the server, and do things with the result, but streaming data gets to be a pain and adds costs elsewhere

[elfin sphinx]

there might be some way where you can get a very light version tenserflow light to run on a teensy board with a simple NN (saw it in a yt video)
but again , it is bit expensive than arduino boards , but cheaper than jetson nano

[errant wigeon]

Yeah there's some awesome ways to eek out more from micro's, and TF light is neat, but for a yolo model you'd have to figure out how swap the model from pyTorch to TF, then to tf light which, some folks are great at that kind of work but boy it'd baffle me. Streaming data seems wildly easier but even that is far from "easy".

[errant shell]

For computer vision tasks on microcontrollers check out OpenMV - I believe there might be some object detection support there

[cloud hinge]

Can pin placement mistake make all pins act in reverse?

[cloud hinge]

Or can magnets from a motor cause the issue. Seems a pin misplacment possibly was causeing my code to work correctly and now i unplugged everything i dont remeber what the misplacmet was and now my scale not updateing either. Possibly. I think the pin misplacmet was also causing the motor to reverse. Bluetooth still working with microcontroller still with pump and pump directions work both ways now but everything is in reverse.

For l298n motor controller with linear actuator and pump

Theres 4 in pins 1,2,3,4 that corespond to esp32. D2, d16, d15, d12

I think the code might have been written to work backwards. So much work lol..

I put it on an expansion board and worked for a bit then i did some unplugging and plugging back in pins based on schematics

[smoky meadow]

yeah i get that now but more of the board purpose
oh i see so you just run the code and give it 8 values with it
Afbeelding
but what do those do excactly cu sort of a way to create more gpio spots but not sure
is the goal of this just to show that all 8 pins of the (.. dunno what it is called) are on the > more this part
pls @

[elfin sphinx]

search for datasheet of the ic to see how it functions , which pin corresponds to what , and so on

[limber field]

https://www.ti.com/lit/ds/symlink/sn74hc595.pdf

[smoky meadow]

#1186384618962813120

[smoky meadow]

why would they do the yellow cable to the left side and not to right?

This is my progress so fair

@elfin sphinx
also not sure how the should be 26 useable pins on rpio 4 can find obly 17 gpio x

[elfin sphinx]

as long as the knob isnt operating any sort of communication protocol like SPI , it shouldnt matter which pin you use

[elfin sphinx]

not sure what you mean by this

[smoky meadow]

so like this?

[elfin sphinx]

this only shows the first 26 pins out of total 40

[smoky meadow]

so if not volt pin or gp you should be good?

[elfin sphinx]

yes , those 3.3v and 5v pins output a fixed voltage , and gnd is always 0v

so you cannot control those pins through your program

what you can control is all the other GPIO pins

also , please follow a pin diagram that has all the pins listed on it since the one you showed is incomplete

[smoky meadow]

you im not done yet

yeah

and why are those special?

[elfin sphinx]

SPI, I2C , UART are special protocols used to communicate between devices
those pins have the capability of talking in that protocol , hence they are special

you can use them as normal pins too

but if you have some device like a lcd display and it uses SPI communication , then you should connect that display to SPI pins

[smoky meadow]

alr thx for your help and time

[elfin sphinx]

no worries 👍

[smoky meadow]

Got this rn think im gonna use this use button is kinda blockef

It s gonna be a mess you need to switch the rotatory hope they won t be too annoying

[smoky meadow]

Damn

[elfin sphinx]

dont spam please
this is not a channel to vlog your journey

[smoky meadow]

but what is wrong seems right

[smoky meadow]

what would you like to see removed the resistors on 4x8

[smoky meadow]

still stuck on this btw

[elfin sphinx]

circuit diagram(on paper or on any digital site) + photo of setup + code + errors + expected behaviour + what actually happens = a VERY HIGH chance of getting the help you need

" my circuit aint working , help " + random picture without any context = a VERY LOW chance of getting the help you need

you decide if you want help or sit there with a broken circuit

[smoky meadow]

Kicad doesn t seem userfriendly

@elfin sphinx

[smoky meadow]

don thave ocde

[elfin sphinx]

how am i supposed to know which rotary sensor are you using , what pin of that rotary sensor is what , what pin of your LED display is what

you dont have to use kicad , it can be a bit complicated. there are other online simpler alternatives as well like easyeda , fritzing etc. paper circuit diagram is fine as long as you specify what pin is what and draw some good lines since these lines are hard to follow

you dont have to specify those breadboard numbers upto 60 since they are uselsess

[elfin sphinx]

how can the circuit without without some code ?

you still havent given information like photo of setup , expected behaviour + what actually happens

so i literally dont know what you want the circuit to do and what it actually does

[light ivy]

Can an sg90 servo be powered by the +5V pin on a Raspberry Pi? is this recommended? otherwise, should a 5V power supply be used? would 4 x 1.5V battery work?
is the operational voltage 4.8V or 4.8-6V? on most websites it says 4.8V, but the datasheet http://www.ee.ic.ac.uk/pcheung/teaching/DE1_EE/stores/sg90_datasheet.pdf says 4.8-6V.

[smoky meadow]

the hardware first need to be right before i can code

[smoky meadow]

im using a rotary a 1x8 and a 4x8 segement

Wanna make a game where you scroll the number with scrollthing it will beep when you get close and harder when ur on it you press the scrollthing and it will add to the number when you get 1 it will add to the 4 numbers so you guessed 18 18.. 1815 and if all are guessed led will glow and will show a code on it after x amount of time.sleep()
How should i place it on my gpio for a logicol structure also needs to start without screen so with a button

[smoky meadow]

@errant wigeon are you able to help 🙂

[smoky meadow]

Nice im getting ghosted

[elfin sphinx]

i was away lol

wdym ghosted ?everyone is volunteer here , so you cant expect help on demand 🤷‍♂️

anyway

[elfin sphinx]

didnt you already have everything connected ?

[elfin sphinx]

that does not tell me what pins they have since there are lots of rotary encoders , and i do not know which one you have , how many pins it has , which pin is connected where and so on

[elfin sphinx]

i think i get what you mean 🤔

actually , i dont

[errant wigeon]

Please be mindful of everyone's time and ability to be present. This is the first time I've been able to be online in 5 hours, it has nothing to do with ghosting and just the fact that we all have our own personal obligations to attend to. As Saul pointed out, we're volunteers and as such, we help as we're able to.

[elfin sphinx]

can you work through an example of what you want to happen ?
(or tell me if i have gotten what you said correctly)
so initially(when you just power your circuit on) am guessing all the displays ( the 4 digit and 1 digit ) will be off
as you start rotating your rotary encoder , the number on the single digit display will start going from 0->1->2->.....8->9->0->1->..... , when you stop rotating the thing , the display will stop as well (say it was on 4 when you stopped rotating your knob , so it will freeze on 4)
so when it is on 4 , and you press the rotary thing , 4 will get submitted to your python program , and it will check with the random number the computer had in mind

if it was 4(the random number computer had in mind) , then the computer will show some sort of 4 digit code on the 4 digit display after some x seconds of delay

and if it wasnt 4 , the process will restart from 0

is this what you want to happen on your circuit ??

and please give the specification of your rotary encoder ( with its pin diagram) and the specification of your both displays (with pin diagrm) so that we know what components you are working with here

(from what i understand , the 7 segments can have any gpio connected to it , except the power pins(we already discussed this) , and as long as your rotary thing doesnt use any protocol like I2C or SPI , you can connect that to any gpio as well)

[errant wigeon]

Build off of this, there's so many out there that it's hard to know which one you're using:
https://www.sparkfun.com/categories/524
This is the options from a small vendor, whereas
https://www.mouser.com/c/electromechanical/encoders/?technology=Rotary
This is a larger vendor. It's really hard to know what part your using, so if there's a wiring issue we can't really begin to help you look for it.

[smoky meadow]

I do but not good Just came back from supermarket to Cook for my mom

[smoky meadow]

Hit has 5 pins Total is there like a seriële number on it to check the spefic type?

[errant wigeon]

But even before that, have you gotten to rotary encoder to work on it's own? Let's make sure your code can work with each part own its own before we start trying to put everything together. It's going to be really hard to know why something doesn't work if you do everything at once

[smoky meadow]

Used the rotary and 1x8 segment before on it s own will show in 2 min

[elfin sphinx]

could be
you can send a clear picture of it so that we have at least some tangible thing to grab onto

[smoky meadow]

import random
import time
import RPi.GPIO as GPIO


GPIO.setmode(GPIO.BCM)
#in en output

# num_display = {
#     1: 12,  #A
#     2: 16,  #B
#     3: 13,  #C
#     4: 19,  #D
#     5: 26,  #E
#     6: 21,  #F
#     7: 20      } #G


NUMBERS = {
    0: [12, 16, 13, 19, 26, 21],
    1: [16, 13],
    2: [12, 16, 20, 26, 19],
    3: [12, 16, 20, 13, 19],
    4: [21, 20, 16, 13],
    5: [12, 21, 20, 13, 19],
    6: [12, 21, 20, 26, 19],
    7: [12, 16, 13],
    8: [12, 13, 16, 19, 20, 21, 26],
    9: [21, 12, 16, 20, 13, 19],
}


random_num = random.randint(0, 9)
GPIO.setup(NUMBERS[random_num], GPIO.OUT)
GPIO.output(NUMBERS[random_num], GPIO.HIGH)

time.sleep(10)
GPIO.cleanup()

[errant wigeon]

Do you have more than one bread board?

[smoky meadow]

Noop

[elfin sphinx]

oof

[smoky meadow]

Only this extra

[elfin sphinx]

yeah , thats fine too

[errant wigeon]

That'll work! Let's split the parts off into their own sections, so it's easier to mange cables because anything could be the problem in the above picture. Breaking the problem down to small known sections is going to help

[smoky meadow]

So you want the 1x8 for example on 1 board?

#importeer GPIO en time package
import RPi.GPIO as GPIO
import time
from RPi import GPIO
from time import sleep
clk = 17
dt = 18
#gebruik BCM mode voor de pin nummering (conform breakout)
GPIO.setmode(GPIO.BCM)
GPIO.setup(clk, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(dt, GPIO.IN, pull_up_down=GPIO.PUD_UP)
counter = 0
#initialiseer een beginwaarde voor de clock
clkLastState = GPIO.input(clk)
try:
 while True:
 clkState = GPIO.input(clk)
 dtState = GPIO.input(dt)
 if clkState != clkLastState:
 if dtState != clkState:
 counter += 1
 else:
 counter -= 1
 print(counter)
 clkLastState = clkState
 sleep(0.001)
finally:
 GPIO.cleanup()

this is the code from rotatry still not perfect tho

[elfin sphinx]

oof , thers gotta be some library for the rotary encoder

[errant wigeon]

Then let's only fix the rotary code right now, and not use the segment displays just yet. I thought you had said the rotary code was working

[smoky meadow]

don t worry about placement it is fine in my file

[elfin sphinx]

let me see if i can find smth

[smoky meadow]

at some point it will go only up or down in the begin it works

[errant wigeon]

You have a lot of problems, both in your code and in your circuit. We're trying to help you, but to help we need to break down the problem into smaller bites. If the rotary encoder isn't working then it could be part of the issue. Breaking the rotary encoder onto it's own breadboard means it's easier to know it's wired correctly, and easier to just test the code for the encoder

[smoky meadow]

yeah so if you got 1815 it will buzz when you get closer to 1 and when you press it it will display on 4x8

[errant wigeon]

Is this its current behavior, or what you want to make happen?

[smoky meadow]

what i want to happen need to make a game without screen and my thema is napoleon so tought the battle of waterloo(1815) would be good

[elfin sphinx]

if you dont intend to use those those displays in the final product , why not just start without them ?

[smoky meadow]

huh i do 1x8 will show number 4x8 will show final numbers

[elfin sphinx]

what i want to happen need to make a game without screen and my thema.....
?

[errant wigeon]

I think they mean LCD or computer monitor

[elfin sphinx]

ohhhh

gotcha

(okay , and to provide your audio feedback , you also need a buzzer btw)

[smoky meadow]

yeah so need button to turn it and play it without touching the software

[smoky meadow]

yeah buzzer led and on/off button

but wanted to fix rot 1x8 and 4x8 first

[elfin sphinx]

yeah

so do you know how you are supposed to use the rotary encoder with your pi or not ??

[smoky meadow]

not much cuz my code doesn t work perfectly and don t have something connected to the press down fucntion of rotary encoder

[errant wigeon]

So lets set aside the code for the 7 segment displays, and focus on the rotary encoder. That way we know what works and what doesn't

[smoky meadow]

alr tesed it like this with bad code bef

[errant wigeon]

Ok. Let's test it again.

If it's not working on its own then it won't work when you integrate it with other things

[smoky meadow]

you want me to remove all and only do this?

[errant wigeon]

Do you know what the problem in your circuit is?

[smoky meadow]

kinda need to access d1-d4 idivually and don t have blockers there cuz dunno where to place them

[errant wigeon]

Remove your rotary encoder, place it here, or remove your 4x1, 7 segment display and place it here.
You know what you want to do, yes, but you don't know what's wrong with your circuit. So we have to remove everything and start from the basics. It's a pain but that's debugging. Otherwise you end up spending multiple days trying to track down the problem because you didn't start from things you knew worked.

[smoky meadow]

alr doing that think it day 3 or 4 lol

[errant wigeon]

So lets start making sure we know what works and what doesn't. Saul has been a huge help here, but if you keep going forward to the next part before the first part works, all of their effort to help you won't work because you didn't finish getting the part before working

[elfin sphinx]

btw , i just did some googling and you can install circuitpython as a package in your python
which i suggest you do since it has a lot of useful libraries that will take care of a lot of code for you imo

like , working with rotary encoder is as simple as

import rotaryio
import board

encoder = rotaryio.IncrementalEncoder(board.D10, board.D9)
last_position = None
while True:
    position = encoder.position
    if last_position is None or position != last_position:
        print(position)
    last_position = position

[smoky meadow]

alr but don t have pip in my linux

[elfin sphinx]

what

you have python installed , but dont have pip ?

that sounds strange since the stock os should have both

[smoky meadow]

dunno just did the flashing thing on sd for my rpi 4

[errant wigeon]

is the pi connected to your internet?

[smoky meadow]

it is

[elfin sphinx]

command to install the circuitpython translator layer is - pip3 install Adafruit-Blinka

@smoky meadow run the command and show the output (or confirm that the library got installed)

[smoky meadow]

but can i even install my rpi in this condition?

[errant wigeon]

try and tell us what happens

[smoky meadow]

so won t break down why i plug it in cuz of bad electricity flows?

[errant wigeon]

we can't help if you don't follow through with the suggestions, and if it doesn't work we can't help until we know what happened

[smoky meadow]

i mean more like dunno if my resistors are good and can break the rpi4

[elfin sphinx]

as keith said , disconnect all stuff
we are starting from scratch

[smoky meadow]

ok

Will boot it up now

[elfin sphinx]

ohhh , did you connect the VCC of your rotary encoder to 5V ??

afaik rpi pins are 3.3v only

[smoky meadow]

3v3

[elfin sphinx]

good

[smoky meadow]

right? if you look at white cable

[elfin sphinx]

yes, but the cable does not look its all the way in

all pins must be in all the way

[elfin sphinx]

btw , you did not confirm what happend with your library installation ?

[smoky meadow]

wdym

try apt shitt now?

[elfin sphinx]

can you try the same command with sudo ??

so sudo the-exact-same-command

[errant wigeon]

The latest version of the pi os requires the python install code to be run in a container.

[elfin sphinx]

ohhh

[errant wigeon]

Which I've never done so I'm slow on getting up to speed on this on 😛

[elfin sphinx]

neither have i lol

[errant wigeon]

How do you run your python script?

[smoky meadow]

python file.py

[errant wigeon]

Ok let me find out what the default env is

[elfin sphinx]

(i am gonna be afk a bit , ill catch up later)

[errant wigeon]

At any point did you type in code like:

python3 -m venv .venv
source .venv/bin/activate
python3 -m pip install -r requirements.txt

[smoky meadow]

noop

the pi package is build in

[errant wigeon]

can you type, which python and tell me the output

[smoky meadow]

litteraly wich python?

which

[errant wigeon]

which python

[errant wigeon]

and:
python -V

[smoky meadow]

3.11.2

[errant wigeon]

and
python3 -V

[smoky meadow]

same result

[errant wigeon]

ok. Let's try this

python3 -m pip install Adafruit-Blinka

[errant wigeon]

Ok cool, that was what I expected but I was hoping we'd be able to skip it. Give me a bit to read up on some changes to the os

Ok we're going to start using a venv,

[smoky meadow]

oh just like in pycharm i see

[errant wigeon]

sudo apt install python3.11-venv
python -m venv env --system-site-packages

[smoky meadow]

done

[errant wigeon]

source env/bin/activate

[smoky meadow]

got a venv now

[errant wigeon]

python -m pip install Adafruit-Blinka

[smoky meadow]

using a vnc now

[errant wigeon]

Now we're going to try this code

we might need to change which pins are used in the code to match your circuit, I'm not 100% if that was already done

[smoky meadow]

how can i screenshot in linux?

cuz ctrl shift s an dprt scr doesn t work

[errant wigeon]

Why?

[smoky meadow]

cuz then i can see the files easier

[errant wigeon]

Ok.

[errant wigeon]

I do not know

[smoky meadow]

alr will do it like this then how do you edit and make folders and files in terminal?

[errant wigeon]

nano rotary.py will give you a simple editor, ctrl+x will let you exit nano, and press y to save when you've made your changes

nano newfilename.py will create the file, but it won't be 'made' until you exit and hit save

[smoky meadow]

why y and not ctrl s lol weird linux

[errant wigeon]

mkdir mydirname will create a new directory

cd mydirname will let you go into that directory

[smoky meadow]

i know cd and cd .. 🙂

[errant wigeon]

you can use a vnc if you want to manage files that way, I just don't know how to use your vnc

[smoky meadow]

i mean terminal is better but im just bad at it lol

[errant wigeon]

The best workflow is the one where you can solve your problem with the least struggle, if that's not terminal then the terminal is not the best workflow for you at this time.

[smoky meadow]

but i can t send pics so terminal might be better

cuz atleast i can sent pics

so made this rn im not really good with oop cuz im a first year but atleast want a def for evevry piece

[errant wigeon]

you need to indent after the def rotary():

[smoky meadow]

oh yeah😅 😂
lmao

[errant wigeon]

You'll also never leave the function in this structure

[smoky meadow]

wdym

[smoky meadow]

it is not called yeah

how can i tab everything to the right it is so weird if ur used to an ide

[errant wigeon]

you need to put 4 spaces on every line

[smoky meadow]

i know but like how cuz in pycharm i use tab and everything will be placed inside the function

[errant wigeon]

nano is very minimal.

[smoky meadow]

so tab everything one by one?

[errant wigeon]

you'll want to use the space character but yes

[smoky meadow]

with ctrl x it says Y to save but doesn t back out then

[errant wigeon]

That's my bad

[smoky meadow]

no stress lol ur carrying tbh

[errant wigeon]

Wait no it is ctrl x

did you hit enter after hitting y

[smoky meadow]

oh enter ok

[errant wigeon]

ah yeah, my bad. didn't think to specify that part

[errant wigeon]

I think the code should fail unless you're wired to board D10 and D9

but we can get that in a moment

[smoky meadow]

yeah it will but dunno this package and all the functions inside it XD

lmao it failed alr on line 1

[errant wigeon]

awesome, that's good to see

[smoky meadow]

why?

[errant wigeon]

Because that's very specific, and thus very solvable

[smoky meadow]

oh ok

big big list lol

[errant wigeon]

Granted I'm going to need some time to figure out where rotaryio lives in the blinka package family

[smoky meadow]

tried adafruit *

[errant wigeon]

before you import rotaryio can you import board?

swap their order

[smoky meadow]

damn ctrl z doesn t even work

[errant wigeon]

yeah like that

I just want to see if blinka is in the path, give it a run

[smoky meadow]

can find board

[elfin sphinx]

i am backk

[elfin sphinx]

ohh , a typo ?

[errant wigeon]

We're having trouble finding where rotaryio works, (and yeah there's a typo but it wasn't their earlier)

[elfin sphinx]

hold on let me send the links i was following about this stuff

[errant wigeon]

For as much as I use circuit python, I've never used blinka so what is and is not built in is a bit unclear to me

[elfin sphinx]

https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/running-circuitpython-code-without-circuitpython#linux-single-board-computers-3143514

so , the usual command to install a library would be pip3 install adafruit-circuitpython-libraryname

(the thing i am wondering is that , is rotaryio built in ?)

[errant wigeon]

the issue here as I understand it is rotaryio is a core module in circuit python, but might not have a parity in blinka

[elfin sphinx]

yeah , i am confused too

[smoky meadow]

should i try to leave it and see what happens?

[elfin sphinx]

https://github.com/adafruit/Adafruit_Blinka?tab=readme-ov-file#introduction damm

blink dont have rotaryio

[errant wigeon]

No it won't work as it is. If we can't trace down rotaryio then it won't work

bleh, that is annoying, and very confusing given the web of adafruit learn guides

Ok we're skipping the convenient process and going to just make a flat file

[errant wigeon]

https://github.com/modmypi/Rotary-Encoder/blob/master/rotary_encoder.py
This example looks really similar to your original rotary test, but it's indentation is different

[errant wigeon]

looks like it's a python 2 example, just wrap that in ()

[smoky meadow]

yeah fixed it alr

only pins are wrong rn

[errant wigeon]

good, now we're back to expecting the problem we run into which is a great place to be

[smoky meadow]

why they don t make a list and 2 seperates ones?

[elfin sphinx]

https://github.com/nstansby/rpi-rotary-encoder-python/blob/master/encoder.py

there is arguably a better library here ( HW interrupts instead of polling )
but i doubt if that will make any difference since rpi is so fast and we dont expect OP to go zoom zoom on the encoder

[errant wigeon]

Oh that is a well structured class

[elfin sphinx]

but the try-except in the demo code is kinda sus 😂

[errant wigeon]

I'm not sure what you mean by this, but probably because this worked for their goals

Rotary encoders require some timing, so a lot of example code is simple so it's easier to understand. As you can see by Saul's example, it can get to be complex. That is awesome when you need it, but it also means it gets harder and harder to debug if you don't know what's wrong. So a lot of folks who've written drivers for rotary encoders just wrote simple code that solved their problem

[errant wigeon]

.> *stares at my own code more cursed than this*

[elfin sphinx]

but i am surprised tbh that only handful of the core libraries are ported to the blinka

[smoky meadow]

is there a quick way to delete all code in a file ctrl a doesn t work

[errant wigeon]

you can just delete the file as a whole

[smoky meadow]

but not the stuff inside the file?

[errant wigeon]

I didn't question it either, I assumed it was there

[elfin sphinx]

lets do whats easier here 🤷‍♂️

[errant wigeon]

There might be but I don't know it.

[smoky meadow]

alr so how do you del one?

[elfin sphinx]

nvm , just backspace the whole thing

[smoky meadow]

it is super long like doesn t seem to end did more thands 100s alr

[errant wigeon]

rm filenamehere
but make sure you select the correct file, it'll completely delete whatever you tell it to, without question and without the ability to undo.

there is no confirmation either

[smoky meadow]

so also your os?

[errant wigeon]

the answer is close enough to yes, and complex enough that you don't need to worry about it's specifics. It's a dangerous command to use carelessly

sweet, now you can open nano and put the new code in

[smoky meadow]

how do you make a new file you said bef but don t have a fotoghrpahic memory

[elfin sphinx]

if you wanna avoid all this headache , your probably should connect a display and keyboard + mouse to your rpi

so that we dont have to learn linux 101 to get this thing going

[elfin sphinx]

nano filename.extension
(dont forget the extension)

[errant wigeon]

Yes you can power it by the pin, but usually you want to use a shield to both isolate electrical noise from the pi, and to supply more current to the servo. If you're just showing that you can move it, and not putting load on the servo arm you should be fine

[light ivy]

what do you mean by load on the servo arm?

[errant wigeon]

Don't push back hard on it while it's trying to move, don't twist the servo around by hand when it's still, that kind of thing

[smoky meadow]

don t even see the code lol

[light ivy]

i will be attaching the servo to something to turn and there may be a force experienced
therefore, i'll avoid powering it from the +5v raspberry pi pin

instead, how can i power it?

[elfin sphinx]

hope that indentation doesnt screw you 🤞

[smoky meadow]

did .py

[light ivy]

also, do you know any good websites for hardware/electronics
the documentation seems to be less than what we have for computer science and software development

[elfin sphinx]

indentation , not extension

[errant wigeon]

https://www.adafruit.com/product/2327 These work

[light ivy]

my specific use case uses servos and stepper motors so a hat may not offer that flexibility
is there an alternative?

[elfin sphinx]

for this kinda stuff , the adafruit site has lots of how-to and tutorails

it all blends in nicely if you use their prodcuts

[errant wigeon]

There's a lot of stuff out there, I recommend either https://www.adafruit.com or https://www.sparkfun.com/
They both have lots of tutorials too

[light ivy]

can i power the servo from a power supply or with batteries?

[errant wigeon]

I don't know what you mean by this, but if you copied the code correctly then you should be able to see it

[elfin sphinx]

yes, and you ideally should use external power supply for servos

for steppers , you kinda have to

since they draw signifcant current

[smoky meadow]

so how do i get this normal?

[light ivy]

for a 12V nema 17 stepper, i'm currently using 6 x 1.5V batteries
what is the disadvantage in this? is it dangerous?

[errant wigeon]

I don't know what you mean by this. It looks normal to me.

[elfin sphinx]

firstly , you dont have enough voltage for your stepper, since 6x1.5 is 9V

secondly , steppers draw lots of current , especially under load , so you might wanna consider getting a 12v wall adapter
those AA batteries wont last that long

[smoky meadow]

like i can t see all of the code

[light ivy]

can you estimate how long they would last?

[smoky meadow]

and scrollbar doesn t work

[errant wigeon]

https://www.adafruit.com/product/352
https://www.adafruit.com/product/658
https://www.adafruit.com/product/1385
There are all good products to look at, they're great for different voltage levels

[elfin sphinx]

that depends on your battery pack capacity and current draw of steppers

but if i had to make a blind estimate , i would give it few minutes

[errant wigeon]

Can you use the arrow key?

[smoky meadow]

oh that works lol they got a fake scrollbar

[light ivy]

would 4 x 1.5V batteries work to power an sg90 servo? i'm aware that 6V is the upper bound of the range of operational voltages (4.8V - 6V) - is there a danger in this?

[elfin sphinx]

most likely not , but i wouldnt recommand it

[errant wigeon]

That should be fine, you rarely get exactly 1.5 v out of batteries. But it gets riskier

[light ivy]

what exactly is the risk? will it damage my pi?

[smoky meadow]

from RPi import GPIO
from time import sleep

clk = 17
dt = 18

GPIO.setmode(GPIO.BCM)
GPIO.setup(clk, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(dt, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)

counter = 0
clkLastState = GPIO.input(clk)

try:

        while True:
                clkState = GPIO.input(clk)
                dtState = GPIO.input(dt)
                if clkState != clkLastState:
                        if dtState != clkState:
                                counter += 1
                        else:
                                counter -= 1
                        print counter
                clkLastState = clkState
                sleep(0.01)
finally:
        GPIO.cleanup()

they only have 2 pins i got 3

[errant wigeon]

Too much power into the servo could burn it out, that's why the shields/hats are helpful. They also have noise isolation to keep an issue in the servo from bouncing into the pi

[errant wigeon]

This has a lot of explanation about why to use them

[light ivy]

for simple hardware control tasks like this, would you recommend using a pi pico instead?

[errant wigeon]

I'm guessing because I don't have your product information, but one of your pins is probably a button

[errant wigeon]

I don't think it really matters honestly

but you should read through the product's learn guide to make sure you understand why the product exists, and what it can and (more importantly) can't do

[smoky meadow]

yeah

[light ivy]

I have two steppers and two servos. I would like to control all of these in a project, but only one at a time. The steppers will be powered by a 12V power supply and the servos will be powered by a 5V power supply. Can 1 power supply be used for two motors? does the answer change if the motors are running simultaneously?

[errant wigeon]

Ok I've got to step away for a while

[errant wigeon]

This is going to depend on the power supply type, wiring, and current draw of the motors

[smoky meadow]

changed the switches to my gpio (16 and 20) but need to implement the button

[smoky meadow]

ef start():
    GPIO.setup(4, GPIO.IN)


    for i in range(20):
        print(GPIO.input(4))
        time.sleep(1)
    GPIO.cleanup()


#DRUKKNOP SPEL
def drukknop():
    GPIO.setup(18, GPIO.IN)

    # loop through 20 times
    for i in range(20):
        print(GPIO.input(18))
        time.sleep(1)
        GPIO.cleanup()

it works for the first function but not for the 2nd wrote abve

[true oriole]

I hope your all having a wonderful blessed holiday season. I have wonderful news on the development of my simulator. I decided last tuesday id start doing more research into risc cpu architecture and learned not only is there 10x the amount of helpful material out there but its also a whole lot more accurate. So with that in my mind i decided to induldge into trying to create a simulator for the RiscV 32m microprocessor. The goals for the simulator included: Working assy. ide, assy. loader, memory viewer/editor, ability to output basic register contents onto the users cli, an more in depth help command function/help lists, the ability to scale / create custom instructions for the cpu, features to save / load from the assembly editor, proper error handling within machine code, scalable registers/memory and the ability to be futureproof/ updateable for future Risc V cpus etc.. e/m/s/z variants which all do something the last couldn't. so with all that being said, I present you the very beginning of RiscVA3 created by me.

[limber field]

hmmmm ...

[hasty zealot]

:ok_hand: applied timeout to @hallow igloo until <t:1703627742:f> (10 minutes) (reason: duplicates spam - sent 4 duplicate messages).

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

[covert ore]

Hey everyone! I'm working on a school project with a Raspberry Pico that uses Micropython, I'm still relatively new to Python so I have some questions.

We have a little board that has 9 LEDs, 2 Buttons, 1 Potentiometer and a heat censor.

I want to make some sort of counter that turns on a new LED every time you press the first button and removes one every time you press the second button , but I don't know how to make a variable that can be used for this.

Could any of you help out?

I have 2 functions in place, LedAdd and LedRem. They both kinda do the same thing, one adds 1 to the variable and the other function removes 1 from the variable

[elfin sphinx]

before going that complex, have you tried some basic code to work with pi pico ??
for example , blining an LED , reading input from button etc

[covert ore]

I made a slot machine

[elfin sphinx]

with pi pico ? then this should be easy for you , no ?

since slot machine is basically lots of buttons , LEDs , switches , displays

[covert ore]

Well it isn't really advanced though lol

It's just you jhave to press the button on the right time to win

[elfin sphinx]

so you have knowledge of how to work with GPIO of pi pico , correct ?

(also , what flavour of python are you using ? circuit or micro ? )

[covert ore]

Wow idk all that stuff lol

I use a program called thonny to upload and edit my code

[elfin sphinx]

yes, thats a good IDE for this stuff , i use it too

[covert ore]

what is gpio?

[elfin sphinx]

micropython is basically a version of python for microcontrollers
circuitpython is kind of derivative of micropython

we use one of these two flavours of python , when we say "using python with pi pico"

[covert ore]

micropython is what i use

[elfin sphinx]

General Purpose Input Output
basically input/output pins of the microcontroller

[covert ore]

like the buttons and leds?

[elfin sphinx]

if you are not much aware of the terminology i suggest reading through / following this tutorial here

it will familarize you with all of this stuff
https://projects.raspberrypi.org/en/projects/getting-started-with-the-pico

[elfin sphinx]

GPIO pins are the input output pins of the microcontroller

an LED is not a GPIO pin of pi pico
but an LED can be connected to GPIO pin of pi pico

https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython/overview

there is this guide also which is more descriptive and covers more aspect of working with pi pico

[covert ore]

Oh yeah that's the thing I have

and i connected the pins to the button and leds

[elfin sphinx]

nice

but to make those LEDs and buttons work

you will have to know how to write code for it (assuming you have wired everything up correctly)

[analog sleet]

https://www.youtube.com/watch?v=UMYv8-Q6y2Y
https://github.com/KeremCikikci/roboChess.git

[valid sail]

how I can disable the bootloader for a Raspberry Pi Pico?

Pls, I cant save and exceute programs on Thonny if I dont disable it

Any help is appreciated

[valid sail]

[vivid shadow]

yall, i need some help, on arduino uno r3 i want to controll a servo with a pot (potentiometer) and record all of it and play it back later, without a sd card module, i have no code, nor do i know how to code, i understand the arduino unos sweep servo example, any help is highly appreciated as i am a beginner with the slightest sliver of knowledge

[errant shell]

Since you need to store data, on your computer, and are using simple peripherals (analog in plus servo out), I would recommend using a stock Arduino firmware like Firmata. Then you can do all the programming on your computer, in regular Python with pyfirmata library. This is considerably easier than writing Arduino C++ plus a combination of host Python to do the storage

[vivid shadow]

have a link for the things?

[hallow igloo]

For rp2040, pico, in T-pico c3
What's the best IDE?

I'm very new with micropython

And thinking should I stick with c or Try to dabble in micropython

[elfin sphinx]

unless you want to squeeze out all the performance out of your rp2040 , micropython is just fine

for IDE , i like thonny

[ashen widget]

How to write to ESP32

[elfin sphinx]

in many ways
most popular are arduino framework, esp-idf , micropython , circuitpython

[errant shell]

https://github.com/berndporr/pyFirmata2#upload-firmata

[limber field]

ohh looky looky , whats this ...

[limber field]

neat stuff @errant shell

[midnight sluice]

https://discord.com/channels/267624335836053506/1191457009917239346

[cerulean crag]

ive never used my arduino UNO R3 before but can someone tell me how I could run an API request to the cryptocompare website every 5 mins and save in a CSV file? I did it on my computer but I don't know if I can run python on a Uno r3

[tough stone]

Can someone help me in #databases because it is a code that is running in a docker container on a raspberry pi

[errant shell]

You cannot run Python on your Uno r3. If you want to save things on your computer, just run it on the computer. Get a Raspberry PI or rent a virtual private server if you want to run it somewhere independent.

[cerulean crag]

k

im going to buy a raspberry pi

[tough stone]

what type are you goint to buy?

the 4 or the 5

[elfin sphinx]

rpi 4-5 might be overkill for this tbh

get a zero 2 w at max (if its just a simple get API request)

[tough stone]

i have the 4 at home and i'm running some sites and some school projects

[covert ore]

Hey everyone! it's me again with another question!
So I've made 3 programs, but now I need a main program to acces them all. My question for you guys is how do I acces another program from another one?

[pearl tree]

If they’re all python files, you can most likely import the smaller programs inside the “main” program and run it

Anyone got quick and fun project ideas using a microcontroller?

[elfin sphinx]

a DIY macropad
you can use circuitpython along with a rpi pico

[pearl tree]

What’s a macropad?

[elfin sphinx]

smth like streamdeck
basically buttons like keyboard that do a preconfigured action on a pc

for example - pressing a button to open chrome tab with a website in it , or opening all the apps that your dev env needs with 1 button
basically combining multiple keystrokes in one key

[pearl tree]

Oo that sounds interesting. Ty for the idea

[limber field]

i only have Rpi3B+ and a PinaeA64 ( 2 Gig ) , im guessing RPi4 / 5 its much better @tough stone ]

[tough stone]

yes. Probably

But i run everything in dockers

[limber field]

i seen that name , dont really know what it is

virtual layer ?

dockers containers hmmm @tough stone

[tough stone]

yes

it is very handy

you can see it as a VM

[limber field]

how would youexplain it

like why use it

[tough stone]

Just that not everything is installed on my pi. When i remove the docker everything else from that program will be removed

thinkt to an python program with a lot of packages.

[limber field]

sandbox layer ?

[tough stone]

think it is like that

it is a pi in a pi.

[limber field]

well i have installed stuff that ruined my OS install before , maybe i need this stuff when experimenting

[tough stone]

just go to hub.docker.com

[limber field]

can you create a virtual CPU or MCU in it

[tough stone]

there are a lot of prebuilds that you can use

[tough stone]

i don't think it

you need to look it yourself

[limber field]

mmm ok i will , did you also use VMware ?

[tough stone]

yes but that is on my windows laptop

[limber field]

i havent tested a virtual layer - for OS experimenting , upstairs machine has 8 Gig , downstairs machine has 16 Gig , im guess virtual needs tons of memory ?

[tough stone]

when you use docker it is the same as you run it directly to the machine

[limber field]

speed optomized to the environment ?

[tough stone]

you can choose the amount of cores it used

but i run lot on my pi now

[limber field]

mini servers on Pi

[tough stone]

you can call it like that. It are dockers

[limber field]

i was curious to do MCU( multicore ) emulations

multicore microcontrollers

[tough stone]

but at this moment i'm colling my pi with a big fan and it is just 30°c

[limber field]

i did some basic , python to read CPU temp of RPi3B+ , i need to make enclosure

was going to use serial on GPIO OR USB-->SER to MCU

i need to expand my projects

[errant stone]

I've not used micropython before but I have to for a project.

I have a function that gets called, then a delay for an arbitrary amount of time, then gets called again, etc. This sometimes needs to be reset and the delay canceled.

In C I would do this in the main loop with a state machine where it gets the current time in milliseconds and, if the current time >= next_call_time, calls the function. It then sets next_call_time to now+delay.

However, MP has asyncio built in. Which is neat. But I plan on pushing this controller to do as much as possible, so efficiency matters.

What's the overhead for asyncio vs a while(true) in main() that checks the time as described above?

[spiral sandal]

well "out of the box" scheduling is far from ideal. To get soft real time it needs a bit more plumbing than just asyncio. really no generic answer, it is per use case

[errant stone]

Accuracy isn't super important, I'm more concerned about memory since that is always in short supply

[spiral sandal]

just use a psram enabled board

[errant stone]

Not my decision to make 😦

[spiral sandal]

if you are not time critical it is quite easy to handle memory with context manager and modules + manual GC

but it is not related to strictly asyncio

also i think i saw something about running bytecode from rodata only

maybe that https://github.com/micropython/micropython/pull/8381

[zenith niche]

I'm trying to follow this advice on using this to control an ESP32 with a regular .py running on another device and I'm confused about how to use Telemetrix4ESP32...

I've installed the client in the venv where I intend to run the .py with pip install telemetrix-esp32

And now I need to install the server component on the ESP32, correct? But I'm using PlatformIO, and this only lists instructions for Arduino IDE https://mryslab.github.io/telemetrix-esp32/server/ . How can I get this going with PlatformIO within VS Code?

Am I approaching this in the right way?

[spiral sandal]

for the esp32 io part here's what i used ```
[env:esp32cam]
platform = espressif32
board = esp32cam
board_build.mcu = esp32
board_build.f_cpu = 240000000L
framework = arduino
lib_deps =
mryslab/Telemetrix4Esp32
robtillaart/DHTStable@^1.1.1
arduino-libraries/Servo@^1.2.1

you need to adapt for your board but there is documenation around

[zenith niche]

ooh beautiful ok ty. so these are the settings you've listed in the platformio.ini?

should I add this to mine?

lib_deps =
mryslab/Telemetrix4Esp32

which would make mine:

[env:esp32dev]
platform = espressif32
board = esp32dev
framework = arduino
upload_port = /dev/ttyUSB0
lib_deps = mryslab/Telemetrix4Esp32

does that look right?

[spiral sandal]

looks legit, but you still need the dht/servo stuff if lib manager won't add them

they are telemetrix deps

[zenith niche]

ok awesome! soooo what happens now? lol

how can I write a py to connect to this server which will assumedly now run on the esp32?

[spiral sandal]

i used telemetrix aio module, for both native and web ( pygbag / pyscript )

[zenith niche]

sorry, I don't understand what this means. Could you please elaborate?

[spiral sandal]

i don't have more than that to quick share https://github.com/pygame-web/showroom/blob/main/src/test_telemetrix.py

here's the wheel just in case https://github.com/pygame-web/archives/blob/main/repo/pkg/telemetrix_aio-1.11-py3-none-any.whl

in any case you want to drive a poppy arm i have the 3d model rigged for harfang

[zenith niche]

I'm sorry dude I'm not very good at this and I don't understand this or the relevance of it 😅

just looking for the simplest possible way for a .py to tell an ESP32 via wifi to turn a relay on / off

[spiral sandal]

then just look at the "blink" part for the test 😄

and ignore the stepper motors stuff 🙂

good luck !

[zenith niche]

OK! I've taken the "blink" part of your script and other stuff I thought might be necessary and have tried to simplify as much as possible! Have drafted this:

import asyncio
from telemetrix_aio import telemetrix_aio
import sys

# some globals
DIGITAL_PIN = 2  # arduino pin number

async def blink(board, pin):

    # set the pin mode
    await board.set_pin_mode_digital_output(pin)

    # toggle the pin 4 times and exit
    for x in range(2):
        print('ON')
        await board.digital_write(pin, 0)
        await asyncio.sleep(.5)
        print('OFF')
        await board.digital_write(pin, 1)
        await asyncio.sleep(.5)

# the IP address of the ESP32
ip_addr = '192.168.88.237'

async def main():
    global ip_addr
    if sys.platform in ('emscripten',):
        window.MM.set_socket("ws://") # what's this window thing from?
        print(f"Board (Web)socket : {ip_addr}:31335")
    else:
        print(f"Board socket : {ip_addr}:31335")

    board = telemetrix_aio.TelemetrixAIO(ip_address=ip_addr, autostart=False)

    await board.start_aio()

    await blink(board, DIGITAL_PIN)

asyncio.run( main() )

it's throwing the error that it "Can't open connection to 192.168.88.237". Does this .py look right? Is there something I need to configure in the ESP32?

this is where the ESP32 "main.cpp" is

#include <Arduino.h>
#include <WiFi.h>

// network credentials
const char *ssid = "homenwname";
const char *password = "homenwpw";

void setup()
{
    Serial.begin(9600);

    WiFi.mode(WIFI_STA);
    WiFi.disconnect();

    // WiFi.mode(WIFI_STA);
    WiFi.begin(ssid, password);
    Serial.println("\nConnecting to WiFi Network ..");

    while (WiFi.status() != WL_CONNECTED)
    {
        Serial.print(".");
        delay(100);
    }

    Serial.println("\nConnected to the WiFi network");
    Serial.print("Local ESP32 IP: ");
    Serial.println(WiFi.localIP());
}

void loop()
{
}

Does this look right? Is there something I should include at the top here?

[spiral sandal]

your loop is empty try something like ```C++
void
loop() {
client = wifiServer.available();

if (client) {
    Serial.print("Client Connected to address: ");
    Serial.println(client.remoteIP());

    while (client.connected()) {
        // if (client.available())
        {
            delay(1);
            {
                // keep processing incoming commands
                get_next_command();

                if (!stop_reports) {        // stop reporting
                    if (can_scan) {
                        scan_digital_inputs();
                        scan_analog_inputs();
                        scan_sonars();
                        scan_dhts();
                        scan_touch();
                        run_steppers();
                    }
                }
            }
        }
    }
    client.stop();
    Serial.println("Client disconnected");
}

}

wifiServer.begin(); goes into setup

[spiral sandal]

there should be that sample somewhere in telemetrix esp32 repo i did not invent it

or maybe copied it from esp8266

[zenith niche]

yeah I'm real confused cause I don't see any .cpp examples in the telemetrix docs https://mryslab.github.io/telemetrix-esp32/api/

super dumb question: is the .cpp extension code c++? are we coding in c++ here?

[spiral sandal]

arduino is c++ framework

[spiral sandal]

.ino == .cpp it is here https://github.com/MrYsLab/Telemetrix4Esp32/blob/master/examples/Telemetrix4Esp32WIFI/Telemetrix4Esp32WIFI.ino

[zenith niche]

cool! ok so am I to include the entirety of this? or should I be putting in something like #include <Telemetrix> at the top of the .cpp?

thanks for all your help and patience dude. I feel like a total idiot 😅

[errant stone]

Is there a better way to test micropython projects? Constantly uploading scripts to my 8266 takes a lot of time when I just need to see how one thing works

[spiral sandal]

why do you upload them then, the board can download them and run them

you are wearing your flash and losing time, wifi download is faster than serial flash

[errant stone]

because I don't know how to do that. I've been using Thonny and uploading stuff to the board

[spiral sandal]

you don't need much, python -m http.server pc side, urllib.urequest + exec() board side in your boot.py

and eg download from the pc a 192.168.x.x.py file that match board assigned wifi IP

edit file / save / push reset => enjoy

[errant stone]

I have 5 different .py files in this project. Is that not normal for micropython? Should I combine them into one giant file? I'm used to compiled languages where that never matters.

[spiral sandal]

on esp8266 the best is smaller modules in .mpy bytecode format

and a context manager to load/unload module for use

to regain memory right after module use

[errant stone]

I've been using mpy_cross to convert to mpy before uploading, it saves a ton of space

[spiral sandal]

indeed

[neon swift]

Is there a relay controller python module for use with raspi that has a web interface and handles 8 or more channels, that non-technical people can use to set timing on the relays? We need a better water pump timer solution for our massive collection of lizards and the proprietary pump controllers are NOT cutting it.

[spiral sandal]

not strictly python but has all you will ever want and really FOSS https://github.com/pilight/

[errant stone]

@spiral sandal Buried in the docs for MP is mpremote, which isn't terribly interesting imo except it has a mount subcommand that basically mounts a local directory on the board and opens a python shell so all I have to do is import main

https://docs.micropython.org/en/latest/reference/mpremote.html#mpremote-command-mount

It works incredibly well and I can even my http server stuff (html, js, etc) with zero effort

[spiral sandal]

still need the wire no ?

doc of that module speaks of /dev/tty*

i thought everybody knew https://github.com/scientifichackers/ampy already 🙂

[errant stone]

Yeah, its over usb, but i'm ok with that

[spiral sandal]

well minimal boards don't have usb to serial

so better have a tool around that can use wifi only

[formal summit]

I need help in Arduino, can anyone?

[elfin sphinx]

just ask your question , dont ask if anyone is there to help or not
provide full problem , ckt diagram , code, what you want to happen and what actually happens

[flint zephyr]

Question for the group… is there any advantageous reason to use micropython when programming Arduino?

Through Python I got into the idea of microcontrollers, but I’m familiar and comfortable with C / C++ . Does it not matter at compile time? Has anyone explored the difference (if any) between using micropython and C?

Also (side question) any recommendations on IDE? So far I’ve been using the Arduino 2, but saw VSCode options etc… thanks!!!

[spiral sandal]

it is easier to write coroutines iter/gen or async/await in python than C/C++

imho a good in beetween to python/C for embedded would be Nim-lang

platform.io supports well arduino, and Eric ide support well micropython

[flint zephyr]

Thanks! I’ll also check out Nim-lang (never heard of that). I’m definitely fine with learning new stuff! I know that although there are many paths, there may be some paths better than others haha!

So far I’m just mucking around, but have a goal to mess around with making some audio related stuff (I’ve made some simple FX pedals in the past, and messed around with some analog stuff, but nothing with a micro controller involved).

[errant stone]

What's a good http server? I tried nanoweb because it is very small, but I keep getting Connection Reset errors when I shouldn't. https://github.com/hugokernel/micropython-nanoweb

[spiral sandal]

judging good would need serious code audit, so i guess you should just try them all 😄

also on what chip are you running that ?

[errant stone]

I'm using an 8266. I'm really confused about what is happening because when I serve a file it works fine, but returning just a status eg HTTP/1.1 400 Bad Request causes the Connection Reset error.

I'm probably not understanding how the internet works, but I've done a few webuis with different backends and never ran into this so idk

[spiral sandal]

1.1 seems a bit complex for a 8266, 1.0 with gc after each request seems safer

https://datatracker.ietf.org/doc/html/rfc2616#section-19.6.2

[errant stone]

The examples in the repo were 0.9, but that didn't work either and had the same connection reset error. I'm not a web guy but I've done a few backends in rust and cherrypy a long time ago and it was so much easier lol

[torpid verge]

Microdot is up to date, works with asyncio and https. Had a good experience using that

[torpid verge]

Vscode has stubs for micropython, use mpremote for communication with the microcontroller. Thonny is also popular. Having used both C and Micropython for microcontrollers, I prefer Micropython, I need much less time to get to a result.

[errant stone]

Microdot gives me mem allocation errors, which means it is probably designed to run on an 8266 without leaving room for anything else.

[spiral sandal]

tbh handling 8266 low mem requires some python wizardry. an esp32+psram is way easier to handler for newcomer

[errant stone]

I think I may have found the origin of my problem, and it is in the asyncio library so it would likely affect all micropython async http servers.

I was sending a POST that could contain a fair amount of data. Before I did anything with this data I wanted to verify it by checking the first 4 bytes to match against a known file header. Then if it isn't the right kind of file I could stop immediately.

If I send a curl -X POST -d "abcd" 0.0.0.0/test it would send the response as one would expect (either a 200 or 415 depending on if 'abcd' is what I wanted to read).

But If I send curl -X POST -d "abcde" 0.0.0.0/test I will get a Connection Reset error. Regardless of what response I send it would always reset.

It seems that reading from the request stream and leaving any data unread causes problems. If I read all of the bytes being send it responds normally. But that defeats the purpose of filtering out bad uploads in the first place.

So Nanoweb works fine as far as I can tell, its the underlying asyncio streams that are being cantankerous.

[spiral sandal]

there's an asyncio channel on micropython's discord

[limber field]

if you have a tkinter GUI loop and need to have extra processes , say a text to speech , is asyncio for this purpose OR another module better ?

@spiral sandal

[errant wigeon]

This probably isn't a question for micro controllers. As far as I'm aware there isn't a port of tkinter GUI for micropython or circuit python. You might get a better answer in #user-interfaces

[limber field]

i use tkinter as a virtual control panel via pyserial to a MCU , bi-directional messaging

have you used the asyncio module for anything ? I use a multicore MCU @errant wigeon

[errant wigeon]

No I don't have a usecase where it is beneficial
Can you provide more detail on your setup? Under the current setup it still sounds like the host of tkinter is a computer rather than a micro controller
What kind of micro controller are you using, are you using circuit python, micro python, pyfirmata, or something else on it, can you share a sample of your code? that kind of thing would be very helpful

[spiral sandal]

if on esp8266 you don't have other (good) choice, asyncio is the way

btw instead of tkinter (eg on android) there's https://github.com/ArminJo/Arduino-BlueDisplay which comes in handy

you are in the microcontroller channel

[ocean tapir]

Oh shoot mb

I didn't notice

[velvet cosmos]

Might be a weird Q but is there a mechanism in Micropython by which I can programmatically define constants at freeze-time? I need to generate hundreds of different firmware images with different string constants. (For ESP32 if it's relevant)

const() doc gives examples like bitwise operation between two other constants but my usecase is more complicated.
I basically need to compute a random number and plug it into a table, then freeze that string in the image.

[errant wigeon]

constants at freeze-time
I don't quite know what you mean by this. Could you provide more information about what you mean by freezing the string in the image? What image specifically, like the deployed micropython build for each controller?

[velvet cosmos]

so micropython supports precompiling modules to bytecode and embedding this into the micropython firmware. Once you flash that image to the microcontroller, the micropython interpreter can use your bytecode without having to retrieve it from the filesystem.

It seems like the tooling for this all wants source code though. I was hoping there'd be some cool middleware where you can programmatically change parts of the output.

[errant wigeon]

are you referring to the .mpy files

or the more 'core' micropython code? (which I believe is written in c)

[velvet cosmos]

Neither. Mpy files can be frozen too though seems like

https://docs.micropython.org/en/latest/reference/manifest.html#freeze

From further reading seems like the relevant process is the bytecode generation itself though, not the freezing.

[errant wigeon]

Huh I've never had cause to use this. I was completely thinking the .mpy files and only through that lens
I don't know the answer, but maybe someone else does.
And in case that person isn't on this server, the micropython server is awesome: https://discord.gg/RB8HZSAExQ

[errant wigeon]

yeah the bytecode, mpy files, frozen stuff, and memory stack allocation is a weird thing. It's a lot, and a whole lot of low level optimizations for a hyper specific use case

[velvet cosmos]

essentially what I want to do is generate a bunch of strings on my development computer, and make them into constants in the bytecode.

[errant wigeon]

Kind of like a security key application?

[velvet cosmos]

That's not my usecase, but the process would be essentially the same yeah.

[errant wigeon]

cool, even if it's not your use case, it's a use case that has lots of folks who've tried it and if it's similar enough that might help you get an answer faster

[velvet cosmos]

I only mention it because normally I would probably just put the keys directly in the filesystem or a dedicated partition

[errant wigeon]

Yup I get that. I just don't know the solution at that level of micropython, and know folks on the other server probably do

[spiral sandal]

for that you add them to qstrdefsport.h and rebuild mpy-cross and the port

that subject has keywords "qstr and string interning"

i still think upy should provide an option for uinterned strings , eg with syntax u"text" which is not used anymore but is valid python. nb i already suggested that when f-strings parser was about to be integrated

https://github.com/micropython/micropython/issues/4422

[keen berry]

Hello! I was wondering if anyone got into electronics(I'm talking about the one that is closer to the academic world) from a math and computer science background. Since I didn't have the opportunity to take physics in high school I can't go for electronics as my main course. I was wondering whether it'd be a good idea to go with math and computer science as a dual course and I could take additional courses on electronics as I go. Has anyone done something similar, or what do you think?

[elfin sphinx]

depends on what you mean by electronics here
EE has a lot of stuff going on other than embedded stuff only
if you want to learn core stuff, i doubt you will have time to pursue that alongside a dual degree program

(btw not knowing physics is not a big obstacle for electronics world) ,you mostly learn the stuff as you go (as long as you know basics , you are fine)
but EE is heavy on math for sure

[keen berry]

Yes, but it is part of the entry requirements. And I unfortunately can't take physics in high school.

[keen berry]

Hmm not sure then.

[elfin sphinx]

you can learn the embedded stuff only tho
like without pursuing the whole EE syllabus
if embedded is the only thing you really care about

[elfin sphinx]

what exactly is it that you want to achieve from doing the EE stuff ?

[keen berry]

I'm interested in CPU and low-level hardware design.

[elfin sphinx]

oof , for lower level CPU hardware design , a deep understanding of EE is a must

[keen berry]

But can't take it because of the lack of physics.

[elfin sphinx]

tbh , physics is not that important
most important thing is maths

[keen berry]

So I could go with math and computer science while attending additional courses on ee

[keen berry]

Yes but I don't think I have much chance without doing physics in high school.

[elfin sphinx]

you can try , but there is just loads of stuff to learn
stuff like network theory , analog electronics , digital electronics, Electronic devices and such is the bare minimum

[elfin sphinx]

it is possible that what you think might not be the case , right ?

[keen berry]

Well, not sure in the UK it kinda matters I believe. Based on the unis websites.

[elfin sphinx]

it may matter academically Like to get through a screening process or being eligible

but in reality , it is used very little

[keen berry]

What do you recommend then?

If I got in with maths and computer science I might be able to change it later.

[elfin sphinx]

you can try ECE , which is electronics and computer engineering ?

just wondering how they give you admission for CS but not EE branches based on a single subject

[keen berry]

The problem is that in the entry requirements, they point out that physics is needed. Not sure what that means in reality.

[elfin sphinx]

if there is absolutely no way in hell that you can do EE via the college route , then sure , you can learn two things at once
but i am not really sure if you will get good at both tbh (you can either get good at EE and do the bare minimum in CS or vice versa)

to be fair , you can put low emphasis on subjects like EMFT and such if you want to get into CPU design

[keen berry]

Did you do electronics in uni?

[elfin sphinx]

but i am not sure you will find jobs in core fields easily since you will get a degree in CS

[elfin sphinx]

yep

[keen berry]

Did you take physics in high school?

[elfin sphinx]

yep

but to be fair , we here have same requirement for most engineering streams , and physics is required for all of them

[keen berry]

That is what I'm talking about.

[elfin sphinx]

so it doesnt make sense to me that they reject you for EE but are ok for CS

[keen berry]

They are required.

[elfin sphinx]

if its for all the streams , then sure
why discrimination is my point lol

[keen berry]

They didn't I'm in grade 11

[elfin sphinx]

have you inquired about it with them ? maybe its not really a rquirement , but a good to have ?

[keen berry]

https://www.ed.ac.uk/studying/undergraduate/degrees/index.php?action=view&code=GH60

Look at the entry requirements this is just an example.

[elfin sphinx]

one of Physics (preferred) Biology, Chemistry, Computing Science or Engineering Science at B
it looks to me you have to choose 1 from all of these , physics is just an option , not a requirement

[keen berry]

Okay I can't take any of those either.

[elfin sphinx]

those look pretty standard to me tbh , not sure how you dont meet those requirements

but you can try looking for other UNIs as well and see if they have some looser requirements

[keen berry]

I will email the uni

and see whether my current subjects are good enough.

[elfin sphinx]

what i am trying to say here is
if you wanna do EE, you should do it as a uni course and not a side thing because getting job in core field without a degree in EE related field is tough
but if EE is not your main focus and you just want to do it as a good to have , then sure , take complimentry courses and leaern what you like

[keen berry]

Alright, I will see what I can do.

[elfin sphinx]

and i highly doubt that you will be able to do 2 full 4 year uni courses simulteneously
so lets just get that picture out of the mind 😅

👍

[keen berry]

Thank you for your time.

[elfin sphinx]

youre welcome 👍

[cloud hinge]

Bridging solder on perf boards or bridging jumper bars, what do u prefer and is there any better methods? I found solder blob joints a bit easier but they tend to blob on the other side of perfboard, maybe i was doing something wrong.. each method i had blobs hitting each other alot, seemed the jumpers were much more finiky. Maybe i should just use wires next time instead of the bars. Any and all insight is much apprecieted

[elfin sphinx]

i either use a copper wire or i just take one simple jumper or whatever thin enough wire lying around , strip its insualtion off completely , then tin the wire
and then i just solder it between the points (where your solder blob would have gone , it makes the whole process insanely easier and uses less solder too

[cloud hinge]

Makes perfect sense, thank you for the valuable insight

I realize now i did not tin jumpers first.🤣 Coppers easier im guessing

[elfin sphinx]

tbh i have used bare copper wire very few times , and it was easy
but i mostly just do the stripping wire off thing 😅

and yeah , if the wires are not pre tinned ,it makes it a tad bit more difficult

the beneifit of having them pre tinned is that , you can just stick the wire to given point on PCB by just momentarily touching the iron to the wire

so , the solder on the wire gets melted and wire attaches to the PCB

you can make some good wire bends with practice

[elfin granite]

how does circuitpython manage to create a virtual hard disk

like what library does it use

[runic ridge]

Gonna attempt to make a binary addition circuit using just a bunch of AND and XOR gates from the 74LS08 and 74LS86 chips. anyone have experience with those?

[errant wigeon]

Most of Circuit Python runs on devices with Native USB which lets it use "TinyUSB", a c package they include with building circuit python for the specific hardware. TinyUSB lets it emulate hardware as if it were a traditional USB device. It's pretty neat, but it get's really complex. Here's the source: https://github.com/hathach/tinyusb

[elfin granite]

thank you

[errant wigeon]

I don't have recent experience with that but it's a traditional enough project that is pretty fun

[runic ridge]

🙂

i eventually want to make a whole computer but I'm a far ways away from that

why do a lot of computers use a ton of relays instead of the logic gates like inside chips like the 7400 series?

[errant wigeon]

Ben Eater's youtube channel is the place to go for that: https://www.youtube.com/playlist?list=PLowKtXNTBypGqImE405J2565dvjafglHU
What do you mean a ton of relays?

[runic ridge]

Thanks! been watching his vids a little bit and enjoying them. I'm talking about projects like this: https://www.youtube.com/watch?v=e8DavnWmr1E. Is it just to be old fashioned? Is there any benefit/difference to using relays vs logic gates?

I know that you can create logic gates from relays but I just don't get the point

all of my knowledge of computers has been learned recently from nandgames lol

[errant wigeon]

Ah, this isn't an example of a modern computer, or a modern computer build. It's much more of a challenge and a way to physically view and understand what a transistor is doing in a circuit--a lot of times folks will say, "A transistor is like a little switch", so since relays can act as switches, it looks like this guy took that idea to a limit

[runic ridge]

is it right to say to build a computer you need to build logic gates out of transistors or relays?

and if so that brings me back to the question why not just use the logic gates like on the 7400 chips?

[errant wigeon]

Ehh that's not a thing I'm really great with. Technically a "computer" is a device that replaced human computers--folks who were employed to do a ton of math. So yes, computers need logic gates of some form. But you also need power supply, memory, user interface, etc.
Some chips, (7400's maybe) are power hungry and a smaller package than they provide is better. But, if you want to see the parts of the computer that are doing each step of logic, 7400's are fantastic. You get to engage with a computer at that level which is harder with modern systems on chips which have it all baked into a tiny, tiny space

[runic ridge]

thank you for the thoughtful answer!

[errant wigeon]

No problem, ben's series goes into a ton of more detail on a lot of those questions. I cannot recommend it enough!

[runic ridge]

can't wait to get deeper into it :0

[mystic jasper]

When using the arduino as an ISP and using the hardware SPI, can the VCC and GND pins of the hardware spi be expected to power the circuit as well?

[mystic jasper]

I mean the VCC and GND here, not 5V on the female headers

[mystic jasper]

Everyone suggests using pin 13-10 rather than this ICSP header, I wonder why?

[gray arch]

Hello everyone, I would like to start tread where we can discus some aspects of Computer Vision.

1. I'm interesting entry point in this area

2. If i would like make autonomous small device lets call it "Drone"

3. How powerfull my hardware has to be to handle realtime data processing. and what i need for that.
   3.1. Camera
   3.2. GPS*
   3.3. IMU
   3.4 Distance sensor
   3.5. Onboard Computer

4. Technology stack for software. ( Open CV, CNNs TensorFlow etc, python, C,) - I'm confused with this moment as i cant understand what hardware i need to handle Open CV and CNNs on autonomus board)

5. gps denied, gsm-less, fully autonomus.

I'm very new for this topic and want get basic imagination what to expect

[mystic jasper]

oh well the power-rails on my breadboard had a break in them (this is the only one with a break, everything else was connected all the way through :/) which led to me not having 5V on the other side where I had my circuit setup, what an annoyance

[graceful imp]

I had one too no way

[velvet cosmos]

https://xkcd.com/505/

xkcd: A Bunch of Rocks

I call Rule 34 on Wolfram's Rule 34.

[runic ridge]

Fire

I wonder how logic gates would work as rocks tho

Ig in this comic the guy is doing all the logic gates manually, there’s nothing special about a rock that could do it

[velvet cosmos]

He's basically using them as bits directly. Rock in low position = 0, rock in high position = 1

His body is the logic gates

[runic ridge]

Ye in that case he’s also the computer

The rocks is just info 😛

[onyx river]

.

[errant shell]

In general if you want to hate capacity and flexibility to do computer vision, go for a Single Board Computer. Like a Raspberry PI 4+ or even a Jetson NANO, depending on what kind of frame sizes / framerates and neural networks you want to run.

[hallow igloo]

i dunno if this is the right place, but i need this micropython to be decompiled.
https://paste.pythondiscord.com/L3MQ

[maiden island]

hi

i need help

in raspberry pi3 B+

when I boot up the os the screen goa's blue in beetwen

pls help me

[wet prism]

does it end up booting properly?

is there anything on the blue screen?

[smoky meadow]

Asked if my rpi game was good the said it was nice but a little thin so will make a sum out of it Just to add stuff and pass ig 😆

[spring willow]

Hello!
I’m thinking a lot about making a game panel, and I need some help to choose which microcontroller I am gonna use.

I want to send inputs from the microcontroller, if possible without any extra software on the PC, if that’s possible?
Can a PC recognize any such inputs?

[spring willow]

Will ESP32 do the job?

[elfin sphinx]

wired or wireless ?

[spring willow]

Wired 👍

[elfin sphinx]

then you have lots of options , to run it without additional software , you basically just need to configure it as a USB HID device , which is totally possible
basically any microcontroller with native USB host support should work

my faviourite option is raspberry pi pico , it is cheap , has native USB support and supports micropython / circuitpython which has built in libraries for USB communication stuff

ESP32 S2 also supports native USB afaik , but i have not used it
even an arduino pro micro (board with 32u4 processor) also supports it

[spring willow]

Alright, thanks for the info! Do you think the controllers from Temu are any good?

Worth mentioning is also that I want to light some lights up, that’s possible too right?

As you might figure I don’t know much

[elfin sphinx]

I am not sure since i dont have any experience with temu 😅

[elfin sphinx]

on the control unit you are gonna make with the microcontroller , right ?
yeah , that should be possible 👍

[spring willow]

Alright! Well yea well I have buttons with built in lights, that I want to be lit when pressed

I’m thinking just that and the microcontroller

Connected via usb

[spring willow]

Yea well I’ll code it to make the lights light up when pressed and get off when pressed again

And send an input to the PC

[elfin sphinx]

yeah , that is doable 👍

some switches may even have a built in LED that will be hardwired so that it turns on and off automatically

[spring willow]

Oh wow, didn’t know that! Will I need to solder the pins?

[elfin sphinx]

yes , for sturdy connections of components , soldering is recommanded

you can however use solderless breadboards for prototyping

[spring willow]

Ahaa

I will order some equipment and so, looking forward testing it out!

[spring willow]

I’ll order an ESP32 S2

[last chasm]

https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme280-ds002.pdf

this is reking me

would anyone mind helping here?

I've got temp working but can't humidity working

I've been trying to restructure the forumlas to wokr with my var names and whatnot

[mighty mountain]

How can i incorporate a python library/package to my arduino. I have want to use python to translate some text into braille, and then send that to the arduino, and make it light some LEDs according to the data. I want to use this package https://github.com/ant0nisk/pybrl

[onyx glade]

Just saw this video, thought it was interesting
https://www.youtube.com/watch?v=-XPrSScamXc&ab_channel=Wokwi

[smoky meadow]

do i need for a rpi their cable or can i also use a samsung cable?

[errant shell]

For powering a RPI via USB? Any decent quality cable will do. They need quite a lot of power though, so any old USB power supply might not be good enough. You will notice if you get the "lighting" symbol on the screen, and these warnings are also logged somewhere

[smoky meadow]

yeah samsung is 15w rpi cabble is 27w so guess will buy 1 of those

[safe smelt]

I just finished a project that used python and OpenCV to do computer vision (image recognition), it was running off a raspberry pi 5 and used two pi cameras. it worked fine in real time. We didn't need to use any artificial nerual networks or machine learning though.

Are you sure you even need to use convolutional neural networks? might be overkill. KISS is a good principle (keep it simple)

if you only need to move a robot around slowly, an arduino should be powerful enough (with C) or raspberry will likely be fine with Python

Query:
is this the discord channel which used to be called smth like "embedded python" ?
I want to learn about running python on an embedded system, without an OS (bare metal - no linux). where can i go to learn more about this - any links?

(oh, i'm reading the pinned messages now...)

[hallow igloo]

python embedded systems

[errant wigeon]

Did the pinned comments give you enough to point you in the right direction?

[limber field]

micropython

[zenith heart]

is this the appropriate place to ask for circuit python help?

[elfin sphinx]

absolutely

[zenith heart]

Alright, i already posted my problem in python help so here is the link https://discord.com/channels/267624335836053506/1203004945125609582

[zenith heart]

oh im dumb, instead of writing it in thonny and running it with serial, i should've used the web editor to edit code.py, i dont really like the web editor, so if there is a way to use thonny to edit code.py let me know

[safe smelt]

yes, actually. I think i found out about MicroPython from it, and that was most useful/relevant for me. thanks :D

[echo herald]

wassup

what GPIO pin would this be?

[elfin sphinx]

what GPIO pin would what be ?

[crisp solstice]

sorry to be vague, how much can an esp8266 really do running micropython

i'd like someone to contextualise for me, as a layman, what sort of complexity you could achieve on these microcontrollers?

just to know whether i should cut my losses and start writing c instead

i have a project to read from multiple sensors, run an lcd display and send data to a sqlserver

[limber field]

many use C , micro python also

C far more popular from what i have seen @crisp solstice

[errant shell]

It is not an either-or. You can combine MicroPython with as much C as you would like. The general recommendation is to start writing everything in MicroPython. If something is too slow, rewrite just that in C (and call it using a module)

Reading say 10 sensors at 100 hz, and updating LCD screen at 30hz, while pushing some kilobytes of data over network a couple of times per second, is no problem

[crisp solstice]

amazing news, much thanks.

[young swift]

kk

[errant shell]

You will probably get very far with just plain (Micro)Python. But just for reference, here are two good talks around optimizing MicroPython, from some of the developers
https://www.youtube.com/watch?v=437CZBnK8vI
https://www.youtube.com/watch?v=hHec4qL00x0

[final oar]

Anyone able to help me with installing the libraries to run the code for Raspberry Pi and MLX90640 infrared sensor? I am using windows and I am getting an error when running the code, probably because I've not done things correctly.

https://learn.adafruit.com/adafruit-mlx90640-ir-thermal-camera/python-circuitpython

[errant wigeon]

What is the error you're getting?

And just to be sure, are you using the windows os option for the raspberry pi, or are you using a traditional windows machine?

[final oar]

I am using Pi on Wifi, however I don't know how to install the two libraries and googled how to do so but still misunderstood

I am using a winsows laptop

Next you'll need to install the necessary libraries to use the hardware--carefully follow the steps to find and install these libraries from Adafruit's CircuitPython library bundle. Our CircuitPython starter guide has a great page on how to install the library bundle.

You'll need to manually install the necessary libraries from the bundle:

adafruit_mlx90640.mpy
adafruit_bus_device
Before continuing, make sure your board's lib folder has the adafruit_mlx90640.mpy, and adafruit_bus_device files and folders copied over.

I downloaded the bundle folder but don't know how to check my libraries are there and if installed... Usin powershell terminal

It's easier to explain on voice chat but I am surpressed at the moment

[errant wigeon]

The page is a bit confusing, because there's a lot of ways to do things
For your setup, you'll want to run, sudo pip3 install adafruit-circuitpython-mlx90640 on the pi

actually, I should ask--what kind of raspberry pi are you using?

[final oar]

Pi 5

Sudo does not work for me

I need to use pip3

[errant wigeon]

ok cool, the sudo pip3 command should work

why does sudo not work

[final oar]

PS C:\Users\melis> sudo pip3 install adafruit-circuitpython-mlx90640
sudo : The term 'sudo' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path
was included, verify that the path is correct and try again.
At line:1 char:1

• sudo pip3 install adafruit-circuitpython-mlx90640

•   + CategoryInfo          : ObjectNotFound: (sudo:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  
  

PS C:\Users\melis>

Also I want to make it clear I'm not fully sure I'm using the terminal right in the first place

[errant wigeon]

are you typing that into your windows laptop, or the raspberry pi?

[final oar]

On the laptop

I don't have GUI for Pi, I'm accessing Pi with WIFI using SSH

[errant wigeon]

ohh. yeah I think I see the problem
Can you ssh into the pi, then run the sudo pip3 command on the pi though the ssh? Right now your command is only running on the windows machine, and it isn't running on the pi

[final oar]

myberrypi@raspberrypi:~ $ sudo pip3 install adafruit-circuitpython-mlx90640
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
python3-xyz, where xyz is the package you are trying to
install.

If you wish to install a non-Debian-packaged Python package,
create a virtual environment using python3 -m venv path/to/venv.
Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
sure you have python3-full installed.

For more information visit http://rptl.io/venv

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.
myberrypi@raspberrypi:~ $

Do you think I need to run other things on the ssh terminal first before the code you mentioned sudo pip3 install adafruit-circuitpython-mlx90640

[errant wigeon]

awesome, that makes sense.
So we're going to need to create a virtual enviornment on the pi before we can start running python code on it

[final oar]

I'm happy that I feel like we might get something working, been working on this yesterday too and didn't sleep until late and it's just like hitting walls

[errant wigeon]

so that connected to the pi, but when you started trying to run python code you didn't setup an environment. This use to be allowed (and why the guide doesn't explain how to do it), but in recent versions they have started making users setup an environment. You can think of it as a folder or a container that way code can only run and change things in that container (kind of. There's a lot to it, but for now it's easier to think of it that way). Once we setup the virtual enviornment, your project will have it's own home on the pi and we'll be able to install the code

(Now I have to google and read about virtual enviornments on the pi, all of my projects are old and run on the previous version where that wasn't a requirement. So give me a little while. In the interm someone might know how to set it up and jump in before I'm back)

[final oar]

Thank you, I will also see if anyone knows anything and mention your comment to them

[errant wigeon]

do you have a folder you're putting this project in?

and do you know how to create a folder (a directory) from the command line?

[final oar]

Is it possible to speak on VC chat?

[errant wigeon]

sorry I can't do that right now unfortunately

But I can help guide you through these steps:
https://www.raspberrypi.com/documentation/computers/os.html#using-pip-with-virtual-environments

that link is basically what I'm going to follow:
We're going to make a directory, move inside the directory, create an environment, and then activate it. After that it should be smooth sailing

[final oar]

My friend got the sensor working on his Mac and then I tried to do the same at home on my windows... So he did the ssh, then the steps on the adafruit website but I think what I struggle with is getting the folder and accessing the file in the terminal or cmd line

[errant wigeon]

cool I can help with that. The terminal stuff is a bit daunting at first but once you're familiar with it, it's not too bad

so the first thing I want you to type in the terminal is
ls
(lowercase L)
this stands for list

this is just going to list what's in the directory you're currently in

[final oar]

In the berry terminal file or in administrator powershell terminal ?

or no need for administrator?

[errant wigeon]

it looks like you accidentally ran the pip3 install again, not ls

[final oar]

No, that was from before

[errant wigeon]

hmmm the image is to narrow for me to see it then. What did it say when you typed in ls?

[errant wigeon]

in the berry file

I'm sorry

I completely misread what you were asking

[final oar]

I was asking if to type it in the ssh berry terminal or a the administrator

[errant wigeon]

so yeah,
In the raspberry pi, (in the myberrpi ssh terminal) type in ls

[final oar]

myberrypi@raspberrypi:~ $ ls
Bookshelf Desktop Documents Downloads Music Pictures Public Templates Videos

[errant wigeon]

Just about everything for a while will have you type it in there

ok next we're doing to move into Documents
To do this, we're going to use the change directory command, cd
go ahead and type in cd Documents

[hallow igloo]

Thank you for helping her

[final oar]

myberrypi@raspberrypi:~ $ cd Documents
myberrypi@raspberrypi:~/Documents $

[errant wigeon]

awesome, we're right where we want to be now

[hallow igloo]

Keith can you explain why stel and scoff have walrus next to their name?

[errant wigeon]

next up is creating a directory.
What do you want to call this project? ThermalCamera?

[final oar]

I've ran my ssh in administrator mode, is that okay or won't affect us too much?

[final oar]

Yes that name is fine

[errant wigeon]

I don't know much about powershell, what did you type in to do that? (that way I can google it and read 🙂 )

[errant wigeon]

Ok, in that case to make a directory, we're going to type,
mkdir ThermalCamera

[errant wigeon]

I'm not sure, there's lot of fun games everyone plays and name trends to swap to. I find it a bit hard to keep up personally

[final oar]

When I run my terminal app it calls it Powershell . However I run my terminal as an administrator and calls it now administrator powershell. I basically believe everything I ran including the ssh before we spoke is now in administrator mode.

[errant wigeon]

ssh should be fine, it doesn't give you extra powers on the pi that regular ssh wouldn't. Generally you want to avoid using more permissions than you need, but that's just to prevent you from messing something up too easily. For SSH there aren't extra things it can do (I think. Again, not my wheelhouse but it should be fine for now).

[errant wigeon]

let me know when you've run this command

[final oar]

myberrypi@raspberrypi:~/Documents $ mkdir ThermalCamera
myberrypi@raspberrypi:~/Documents $
myberrypi@raspberrypi:~/Documents $ mkdir ThermalCamera
mkdir: cannot create directory ‘ThermalCamera’: File exists
myberrypi@raspberrypi:~/Documents $

[errant wigeon]

yup 😄

so now run our list command,
ls

do you see it when you list what's in the Documents directory?

[final oar]

myberrypi@raspberrypi:~/Documents $ ls
ThermalCamera
myberrypi@raspberrypi:~/Documents $

[errant wigeon]

yeah 😄

ok cool so now we can change directories, and move into the directory you just created
cd ThermalCamera

so far we haven't done much, but hopefully you've followed along.
Now we finally get to setting up the virtual environment

before we do, can you run
python --version

that'll show what version of python is running by default without a virtual environment
I'm asking mostly out of curiosity on my part

[final oar]

Python 3.11.2

[errant wigeon]

nifty, the new raspberry pi os is really good.

Anyway, let's run the fun command
python -m venv env

[final oar]

I hope that it won't affect having a late version, as I noticed something that maybe it needs 3.7

[final oar]

I did, no output

[errant wigeon]

can you link me the documentation/seedstudio page you're using?

[errant wigeon]

great, now let's list what's in your directory

ls

[final oar]

That was from yesterday's attempts, I opened many tabs but I will try get to it

myberrypi@raspberrypi:~/Documents $ ls
env ThermalCamera

[errant wigeon]

no worries. I have the camera as well so if we get stuck, I can wire it up later this week

[errant wigeon]

So even though it didn't output anything, it still did some stuff. That's going to be a common thing. Not every command is going to tell you it's made changes

it's one of the weird things about using the command line that you get use to over time

[final oar]

Thanks

[errant wigeon]

Now we can activate the virtual environment.
So far we've created a folder for the project, moved inside it, and created the virtual environment. But to use it we'll need to activate it
source env/bin/activate

[final oar]

https://www.instructables.com/MLX90640-IR-Thermal-Camera-Working-With-Raspberry-/

https://learn.adafruit.com/adafruit-mlx90640-ir-thermal-camera/python-circuitpython

The two different links I was trying to follow to set up. Also I will probably have to do the same set up when I relocate my project on a different PC since I am using Wifi or when I get micro to HDMI I can just have the set up ready 🤔

I don't know if I mentioned to you but I want to represent the IR real time monitoring on LabVIEW software for the GUI interfacte and allow capability to save the data for post analysis. Ideally to be able to mouse click on various points to see their temperatures

[errant wigeon]

Ok. I can help with a portion of that project, but after a point it might get hard for me to help because I don't have labview. Still, that's great to know because it can change how we'll handle the ir camera data. I know labview has a few ways it can take in live data, so we'll aim for that as the python output

[errant wigeon]

have you ran this command?

[final oar]

myberrypi@raspberrypi:~/Documents $ source env/bin/activate
(env) myberrypi@raspberrypi:~/Documents $

[errant wigeon]

woo

awesome

[limber field]

Pi 5 , SSH , ubuntu ?

[errant wigeon]

pip install adafruit-circuitpython-mlx90640
we can finally run this 😄

there still might be issues, but we should be facing new issues, and that's a great thing to face

[limber field]

is it Ubuntu OS @final oar

[errant wigeon]

I believe it's Raspberry Pi OS

[final oar]

Do you need the output?

[limber field]

raspian

[errant wigeon]

yes if you can

[final oar]

It says too long to paste here and to paste bin instead but not sure what that is or to paste in two chuncks if it helps

[errant wigeon]

the new version is actually Raspberry Pi OS. Raspbian is no longer the offical name of the os

!paste

[hasty zealot]

Pasting large amounts of code

If your code is too long to fit in a codeblock in Discord, you can paste your code here:
https://paste.pythondiscord.com/

After pasting your code, save it by clicking the Paste! button in the bottom left, or by pressing CTRL + S. After doing that, you will be navigated to the new paste's page. Copy the URL and post it here so others can see it.

[limber field]

ya was wondering

[errant wigeon]

You can follow the link, https://paste.pythondiscord.com/
and paste your output there. Then you can save it, and share the link it generates here

[limber field]

im used to doing this with a GUI environment

SSH is on my to- do list

makes installing packages easier

using IDLE ( yes its old )

[errant wigeon]

also I really only need it if there was an error

[final oar]

https://paste.pythondiscord.com/raw/NDUQ

[errant wigeon]

Awesome! It installed successfully!
That means we can move onto the demo code

I am going to have to step away soon and I might not be back until tomorrow, but I can help out then if you're still running into issues, and others here are very helpful too.

The next thing we're going to do is copy the demo code onto the pi in our project directory, then we'll run it and see what works and what doesn't

[final oar]

Thank you Keith for all your support. I really appreciate it.

This one?

[errant wigeon]

Because I'm more familiar with the adafruit code, we're going to go with that for now:
https://learn.adafruit.com/adafruit-mlx90640-ir-thermal-camera/python-circuitpython
(you already linked this, I'm just putting it here again to keep it tidy and nearby)

yeah that one!

[errant wigeon]

No problem at all!
The camera is really cool--I have one and I'm looking forward to using it soon!

[final oar]

Do I just try running it in VS code or I have to create a specific folder for that first

[errant wigeon]

Unfortunately we'll need to put the file on the pi using the ssh'd terminal.
(Or we could put the code on your computer, and use ssh's friend, scp, but for now we're going to put it on the pi using the ssh'd terminal. That way I can teach you about nano, so you can more easily edit files)

so type in ls, and tell me what you have

[final oar]

So this monitoring system is meant to monitor circuit board assemblies subjected to environmental testing. The project focuses on research within reliability and looking at degradation. I had to also look at desining a bung to put the camera and protect it from the test chamber and then soemone helped me finalise the placement for the sensor (the little hole and semicricle) and it will get 3D printed to test the sensor FOV angle from the bung (of plug that goes in the lateral porthole of the test chamber)

[final oar]

(env) myberrypi@raspberrypi:~/Documents $ ls
env ThermalCamera

[errant wigeon]

huh.
I have missed a problem. Oops.

So env is suppose to be in your ThermalCamera directory, and you're suppose to be in the thermalCamera directory.
Which, isn't a major problem. I just didn't notice it earlier

let's quickly correct that problem

[final oar]

Okay

[errant wigeon]

type in
deactivate

[final oar]

(env) myberrypi@raspberrypi:~/Documents $ deactivate
myberrypi@raspberrypi:~/Documents $

[errant wigeon]

that'll end your current virtual environment (kind of like putting away all of the toys from a toy box, that way they don't get stepped on)

next we're going to co into the ThermalCamera directory, (which is where I thought we were)

cd ThermalCamera

[final oar]

myberrypi@raspberrypi:~/Documents $ cd ThermalCamera
myberrypi@raspberrypi:~/Documents/ThermalCamera $

[errant wigeon]

woo ok, now we're going to create a new virtual environment
python -m venv env

[limber field]

your a very good teacher @errant wigeon

[final oar]

myberrypi@raspberrypi:~/Documents/ThermalCamera $ python -m venv env
myberrypi@raspberrypi:~/Documents/ThermalCamera $

[errant wigeon]

thank you! There's a lot of great teachers to learn from here, it's really nice

[limber field]

well you need to hear it more often @errant wigeon

[errant wigeon]

Now we're going to activate it
source env/bin/activate

[final oar]

I think exactly the same thing. I really appreciate that @errant wigeon is helping me and people here seem really nice.

[final oar]

myberrypi@raspberrypi:~/Documents/ThermalCamera $ source env/bin/activate
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $

[errant wigeon]

And because I don't know if this is going to be the same venv as before, we're going to run this one more time just to be safe
pip install adafruit-circuitpython-mlx90640

[final oar]

We're in the env running the command

https://paste.pythondiscord.com/raw/WNZA

[errant wigeon]

woo ok

sorry about all that, I should have caught that sooner but here we are

so now type in ls once more

[final oar]

(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ ls
env
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $

[errant wigeon]

woo!

ok, now let's make a hello world file, just so you get a bit of experience with nano

if you type in
nano helloworld.py
your screen will suddenly change a good amount

[errant wigeon]

that's because you've opened a text editor, and and .. well.. edit text in it. If you have data in it and we exit, the file will be saved to helloworld.py

So. Let's put some text in it!

print("Hello, world!")

once you have that there, you can exit, and save the file by hitting ctrl+x (which will start exiting the file) and then you'll be asked if you want to save the changes. if you hit no (by typing in n, then the changes will be discarded. And since this is the first time you've made the file, the whole file will be discarded.
If instead you hit yes, by typing in y and then hitting the enter key, it'll save your changes and exit the nano editor

go ahead and save the file by hitting y when you exit the editor

[final oar]

I did it first time and then 2nd time it asked if saving under a different name and I said Yes I think

I exit now

(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ ls
env
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ nano helloworld.py
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $

[errant wigeon]

awesome, let's see what files we have now with the list command, ls

[final oar]

(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ ls
env helloworld.pyy
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $

[errant wigeon]

huh. the hello world file got an extra y at the end

[final oar]

I propably change the name 2nd time I tried to exit

[errant wigeon]

Might still work, we'll find out 😄

plus we can change it too

run the file with python using,
python helloworld.pyy

[final oar]

(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ python helloworld.pyy
Hello, world!

[errant wigeon]

woo! 😄

you've just created a python file with code and ran it, all on the pi!

[final oar]

That's great

[errant wigeon]

Ok, really quickly, let's see what is inside of the file.
We can read the file with nano,
nano helloworld.pyy
But then we open the editor and have to exit it. It's kind of nice to just print the file without worrying about editing the file. Let's use cat (which stands for concatenate)
type in cat helloworld.pyy and it'll print out the contents of the file

[final oar]

(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ cat helloworld.pyy
print("Hello, world!")

[errant wigeon]

woo!
Ok that's a really useful tool to show what's in a file without 'opening it' the way nano did

but now let's fix the name so it says .py instead of .pyy

[final oar]

Yes

[errant wigeon]

Basically we're going to rename the file, but to do so we're doing to use the move file command, mv
mv helloworld.pyy helloworld.py
that tells the computer to move the file from where it was, to the new location. the file is being removed from, and moved to the same location, so in effect the only change is the name.

[final oar]

(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ mv helloworld.pyy helloworld.py
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ ls
env helloworld.py

[errant wigeon]

woo that looks a lot better with a .py

to prove that it's the same contents, let's use cat on the new file

[errant wigeon]

ah, you'll need to tell it which file to go through, so in this case,
cat helloworld.py

[final oar]

every thime I press enter I have the blank space and not the (env) myberry....pi: to write the command

[errant wigeon]

I *think* you're still trying to fill in the cat command from earlier, and it's trying to show you what you can look at

huh. Well that's not the case

but we can stop whatever it's doing by killing it with ctrl+c

[final oar]

^C
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ cat helloworld.py
print("Hello, world!")

[errant wigeon]

woo

ok, killing programs with ctrl+c is going to be one of the most useful things. If something is weird and has been weird for a while, use ctrl+c to kill it (unless it's suppose to take a long time)

And right, you've just gotten a crash course in some of the most common unix commands. Which wasn't our goal, but it'll make a lot of your project easier going forward. So now let's create a python file for the adafruit demo code

so first let's open our editor, nano, and make a name for the file. Let's go with
nano thermalcameraDemo.py

[final oar]

Yes

[errant wigeon]

ok now we're going to put the adafruit code into the file. But we don't want to type it out, so we'll paste it.
BUT
remember how ctrl+c is used to kill programs? that means our go to copy paste don't work.
instead to paste we'll use,
ctrl+shift+v

[final oar]

Do I just press enter after?

[errant wigeon]

it's pasted, you can exit with ctrl+x then save with y

there's no need to hit enter

[final oar]

I exit

[errant wigeon]

Ok
Next we're going to run the code.
It will almost certainly break. But we've made a ton of progress

so run it with python thermalcameraDemo.py

[final oar]

env helloworld.py thermalcameraDemo.py
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ c
at thermalcameraDemo.py

SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries

SPDX-License-Identifier: MIT

import time
import board
import busio
import adafruit_mlx90640

PRINT_TEMPERATURES = False
PRINT_ASCIIART = True

i2c = busio.I2C(board.SCL, board.SDA, frequency=800000)

mlx = adafruit_mlx90640.MLX90640(i2c)
print("MLX addr detected on I2C")
print([hex(i) for i in mlx.serial_number])

mlx.refresh_rate = adafruit_mlx90640.RefreshRate.REFRESH_2_HZ

frame = [0] * 768
while True:
stamp = time.monotonic()
try:
mlx.getFrame(frame)
except ValueError:
# these happen, no biggie - retry
continue
print("Read 2 frames in %0.2f s" % (time.monotonic() - stamp))
for h in range(24):
for w in range(32):
t = frame[h * 32 + w]
if PRINT_TEMPERATURES:
print("%0.1f, " % t, end="")
if PRINT_ASCIIART:
c = "&"
# pylint: disable=multiple-statements
if t < 20:
c = " "
elif t < 23:
c = "."
elif t < 25:
c = "-"
elif t < 27:
c = "*"
elif t < 29:
c = "+"
elif t < 31:
c = "x"
elif t < 33:
c = "%"
elif t < 35:
c = "#"
elif t < 37:
c = "X"
# pylint: enable=multiple-statements
print(c, end="")
print()
print()
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $

[errant wigeon]

cat will show you the contents of the file, but it doesn't run it

so run it with python thermalcameraDemo.py

[final oar]

(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $ python thermalcameraDemo.py
ImportError

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/myberrypi/Documents/ThermalCamera/thermalcameraDemo.py", line 5, in <module>
import board
File "/home/myberrypi/Documents/ThermalCamera/env/lib/python3.11/site-packages/board.py", line 50, in <module>
from adafruit_blinka.board.raspberrypi.raspi_5b import *
File "/home/myberrypi/Documents/ThermalCamera/env/lib/python3.11/site-packages/adafruit_blinka/board/raspberrypi/raspi_5b.py", line 6, in <module>
from adafruit_blinka.microcontroller.bcm2712 import pin
File "/home/myberrypi/Documents/ThermalCamera/env/lib/python3.11/site-packages/adafruit_blinka/microcontroller/bcm2712/pin.py", line 5, in <module>
from adafruit_blinka.microcontroller.generic_linux.libgpiod_pin import Pin
File "/home/myberrypi/Documents/ThermalCamera/env/lib/python3.11/site-packages/adafruit_blinka/microcontroller/generic_linux/libgpiod_pin.py", line 8, in <module>
raise ImportError(
ImportError: libgpiod Python bindings not found, please install and try again! See https://github.com/adafruit/Raspberry-Pi-Installer-Scripts/blob/main/libgpiod.py
(env) myberrypi@raspberrypi:~/Documents/ThermalCamera $

[errant wigeon]

woo!
Ok. This is where I need to step away (I'm a bit late)
so there's a few things that are happening, but with these errors more folks can help you

[final oar]

Thank you very much

If I am to use this on a different PC since I did my OS on my Wifi, would having an micro to HMI help me not having to redo all this or still be a problem?

[errant wigeon]

so if you're on a different pc and you ssh into the pi, it'll be the same experience as this pc. Everything is running and living on the pi, ssh just let's you connect to everything that's on the pi

[final oar]

I think I could set everything up again, because unfortunately I'll work on it from home and then sometimes in class... And I need to get hold of a cable. hence I ended up with OS and SD card method for now

[final oar]

Because I had to sort of reformat everything to connect to new IP

[errant wigeon]

do you have to do that every time you change IPs?

[final oar]

So I shouldn't reformat it

My friend explained there's another way to change IP, maybe I need to find out how

Or see what happens if I have the micro to HDMI, maybe I can access everything that way.

[errant wigeon]

(there's a way to edit the file that says which wifi address to connect to without reformatting, so if you want I can find that. But I'll have to get you those resources later on)

[final oar]

Of course

Thank you for your support, I really appreciate it and have a good day/night

[errant wigeon]

No problem, and you have a good one as well! I'll see if I can get everything duplicated on my end tomorrow so I can guide you further along if you don't have it working before then! 😄

[final oar]

I have classes all day tomorrow but will try to get help tomorrow evening if not tonight

[errant wigeon]

No worries. Plus there's lot of folks that can help you, this error you're currently stuck with is very solveable, I just don't have the time to dig into it but others might

There's also the adafruit discord, https://discord.gg/d9Zgvdkj which can help you as well in the mean time. The error you currently have is probably one they know how to solve if you tell them you're using the thermal camera with a raspberry pi 5 running blinka
the 'help-with-projects' channel would be a good place to ask. I'll keep on eye both here and on the adafruit server so when I come back I can see what you've fixed/what new problems you're working on

ok, cheers! And best of luck!

[final oar]

@errant wigeon Thank you very much ❤️

[hoary beacon]

Do most Python AI libraries like PyTorch, scikit-learn, numpy, etc tend to run on Nvidia Orin Nano systems out of box (like I just install with pip and they work), or is there a lot of work getting them to run on Orin Nano architecture?

[valid oyster]

I should probably use something faster and more low level like Mojo(when its stable), Rust, or the Codon implimentation of python

[brave needle]

Hi, have any of the experts here ever had to deal with controlling the PCA9685 (Arduino) using Python (Firmata)?
I can't implement the PCA9685 in Python, and would like to control 7 servos using MediaPipe.
I'll add that I'm a beginner scribbler.

[lime knot]

So I just got a board with an atmega32u4. How do I go about programming this thing? I am a bit lost