Hello everybody, i have maybe simple trouble but i don't know what to do. My problem is simple.
I did simple example for serial communication between NodeMCU (v0.9) and arduino UNO. Everything works fine. Pins from Node (D2,D3) is connected to UNO (3,2). I write something on Node and have response on UNO, now when i tested it on UNO i wanted use it on Mega. I just replaced UNO with Mega , used same type of code but nothing happens on Mega. I tried change mega pins to 19,18; common ground but still not works.
My question is simple , how i can use serial communication between NodeMCU and Mega2560
Thank you very much