I'm trying to create an UART connection between a Nano and an NodeMCU, running MicroPython.
Code for trying is meaningless - Arduino says "HI", and ESP8266 should receive and print msg value.
Nano Rx --> ESP Tx
Nano Tx --> ESP Rx
Nano USB -- > Mac running
ESP USB --> Linux running
BUT- when I physically connect as described the ESP BOARD freezes, in a way I can't even connect it using
repl. Only after disconnecting wires (not only powering off the Nano), ESP unfreezes.
Appreciate any help.