Use two MKR RS-485 and a UNO Wifi rev2 and a NANO

[markd833]

The MAX3157 on the MKR-485 shield can operate from a 5V supply. Careful examination of the MKR-485 schematic will show you were to apply 5V to operate it at that level.

Have a look at this discussion for a bit more info:

Use MKR485 shield with Arduino UNO board

Hello everyone, I bought an arduino uno board recently and I got an MKR485 shield. I need some help, to use them together, as it is not an MKR board. Thank you.