My problem is simple / I need to communicate between my Heltec WIFI lora 32(V2) and an Arduino Uno.
It does not work but I am not sure on my solution
I use the Pin called RX (U0_RXD - GPIO3) on the HelTec
and connected it to the TX Pin on the arduino uno
I use the Pin called TX (U0_TXD - GPIO1) on the HelTec
and connected it to the RX Pin on the arduino uno
For the Heltec program, I use the command serial2.begin(9600)
For the Uno program, I use the command serial.begin(9600)
But then, after it does not work.
(I am able to communicate betwen two arduino Uno)
Does anybody can check my configuration ?