Check out a guide like this on how to cross compile MicroPython for ESP8266 from its source in a vagrant VM and then flash the firmware to your boards: https://

Check out a guide like this on how to cross compile MicroPython for ESP8266 from its source in a vagrant VM and then flash the firmware to your boards: https://learn.adafruit.com/building-and-running-micropython-on-the-esp8266/overview https://learn.adafruit.com/building-and-running-micropython-...