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Questions tagged [micropython]

MicroPython is a Python interpreter (with partial native code compilation feature). It provides a subset of Python 3.5 features, implemented for embedded processors and constrained systems.

About

MicroPython is a lean and fast implementation of the Python 3 programming language that is optimised to run on a microcontroller. It was originally created by the Australian programmer and physicist Damien George and first appeared in May of 2014.

The MicroPython board is a small electronic circuit board that runs MicroPython on the bare metal, and gives you a low-level Python operating system that can be used to control all kinds of electronic projects.

MicroPython was successfully funded via a Kickstarter campaign. The software is available to the public under the MIT open source license.

Books

Sites

Damien George's KickStarter project to develop a API to use with ESP8266 WiFi chip, optimised and well supported. ESP8266 is one of the best boards to use with MicroPython.

Example projects

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Can't install Micropython module through upip, error message is not clear

I'm trying to work with the Tronpy module in Micropython. It works fine when I'm using CPython. However, in Micropython, I tried to install it and got an error message. I'm using Fedora 34. $ micropython -m upip install tronpy Installing to:…
gscofano
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esp32 micropython littlefs

Using a Expressif dev-board and standard micropython.bin I was able to create a littlefs2 partition, mount it and write data into a file: # ESP8266 and ESP32 import os os.umount('/') os.VfsLfs2.mkfs(bdev) os.mount(bdev, '/')) with…
juerg
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Error initializing ssd1306 oled connected to Pi Pico

Just trying to understand what's going on here. i2c.scan() returns [60], as in should. from machine import Pin, I2C import ssd1306 i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000) oled=ssd1306.SSD1306_I2C(128, 64, i2c) Traceback (most recent…
Gordon Shephard
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Stepper motor powered, but not turning

I am new to using stepper motors and micropython. I am having trouble getting my stepper motor to turn. I am using a raspberry pi pico and a tmc 2208 driver to control my stepper motor. I can hear the coils being powered on and off, but I get no…
TiVe
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MemoryError: memory allocation failed Micropython

I am working with an ESP32 card with a lot of components, in particular an ssd1306 screen, I found a library where I can put letters on the screen, in short I have a problem when I call the library in a test the problem is this one : Traceback (most…
Tuanka 01
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How would I use an older (v1) version of the Hi Technic NXT Infrared Seeker v2 in ev3dev with micropython?

ev3dev version: 4.14.117-ev3dev-2.3.5-ev3 ev3dev-lang-python version: All output of dpkg-query -l {python3,micropython}-ev3dev*: Desired=Unknown/Install/Remove/Purge/Hold |…
Michael Bonnet
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Problem with machine.Timer() and _thread on Raspberry Pi Pico (RP2040)

I am trying to run balance() function on one thread and use Timer on a separate one. Both methods when run separately work fine, but when I try to use them both at once the issr() function which is called by a Timer just stops working after few…
AntCwo
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main.py is running in an infinite loop on a esp8266 board

I have a esp8266 board running micropython. From windows 10, I pushed a main.py file to the board using ampy. The script simply flashes the boards led lights. Unfortunately, it does so in an infinite loop. Now, I am unable to stop the program which…
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UART communication Raspberry Pi Pico to Raspberry Pi

I am trying to communicate with a raspberry pi pico with my raspberry pi 4 over uart. The below code does transmit data, but I am only receiving data from the print statement. import os import utime from machine import ADC …
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In MicroPython how do I load a module from a string

In a ESP32/MicroPython based project I want to (re)load modules from RAM without having to write them to the flash-based filesystem first. (this is both time consuming and wearing off the flash memory) So my idea was to retrieve e.g. module.py via…
frans
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How can I download a binary file with urequests in MicroPython?

I am trying to download a binary file smaller than 1 MB through urequests with basic authentication. The authentication part works and I get the expected response. But the truth is I feel lost since I can't download the file I need and I have to do…
Juan Carlos Linaje
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How do I read and analyse csv files in micropython?

I'm setting up a Raspberry Pi Pico to log temperature, humidity etc. to a csv file and to show data on a small OLED screen. Every hour it will log a new line of data delimited by commas to the file. I want to be able to show the maximum and minimum…
Chris A
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Cannot connect Nano RP2040 Connect running on Micropython to WiFi

I have a Nano RP2040 Connect with Micropython on it. I need to connect it to WiFi. Micropython documentation says I need to import the "network" module, but when I try importing it, I get the no module named 'network' error. I assume the module is…
Nikita Kotsehub
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Micropython: [Errno 19] ENODEV but i2c.scan() returns proper address

I am currently using an SRF-10 sensor connected to an esp32. It's being powered by 5V and I am using a level converter to bring down the voltage to 3.3V to be able to use it on the esp32. Both the SCL and SDA have a 1.8K pull up resistor as…
Tomás Lopes
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Access Micropython REPL on UART(0) not USB

Background I'm working on a robotics project that requires using an ESP8266 based board (Lolin D1 mini pro v2) as a microcontroller. I have Micropython on this board along with a set of functions that I have to be able to call from an Nvidia Jetson…
Jack Walton
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