Adapting this to other controllers

[Maximize0987]

I would like to get the function of 3 uarts, but with the electron discontinued and finding a small board with the same STM32F205. Seems unlikely. Preferably I would use a esp32, but I don't think I am capable of adapting your code. Maybe a newer STM32F4XX would take your code?

Also noticing the last issue posted asking about how you programmed the EVO, is making me wonder if a different radio would have different communication with the main unit. As I have the RFK942 which uses a lora radio, and this radio might not have been available from fortin 5 years ago.