ESP32:
* be sure pyserial is installed: python -m pip install pyserial

Linux:
* add user to dialout group
* check https://docs.platformio.org/en/latest//faq.html#platformio-udev-rules

PlatformIO :
* upload speed may need to be lower to 460800 if head packet error

Arduino :
* upload speed may need to be lower to 460800 if head packet error



