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Install smolOS on ESP8266EX

Requiments

$ python3 -m venv venv
$ source venv/bin/activate
$ pip install esp-tool adafruit-ampy

Flashing MicroPython on ESP8266

Remember to ground PIN 0 for flash mode. I've added a push button to the UART-to-USB dongle for that. I then push it while plugging in.

Get the latest firmware from MicroPython Download Page for ESP8266 1MB. That's the chip I got.

In the time of writeing this was the latest file: esp8266-1m-20230426-v1.20.0.bin.

As super user.

$ su
$ esptool.py chip_id
$ esptool.py --port /dev/ttyUSB0 erase_flash
$ esptool.py --port /dev/ttyUSB0 --baud 115200 write_flash --flash_size=detect -fm dout 0 esp8266-1m-20230426-v1.20.0.bin
  • chip_id lists specs and confirms that everything works
  • erase_flash clears everything
  • write_flash flashes the MicroPython firmware

pushing OSs

Rename downloaded sources to main.py

Prepare Envronment

Do this once

$ python3 -m venv venv
$ source venv/bin/activate
$ pip install ampy

Next time

$ source venv/bin/activate
$ ampy --port /dev/ttyUSB0 put main.py
$ ampy --port /dev/ttyUSB0 put hello.txt
  • main.py is the smolOS, this file name will run at boot
  • hello.txt is just a test file so you have something to play with
  • put your own files the same way
  • do not ovevrite the system boot.py file!