RS232 interface is a Master-Slave concept per design. One Master talks to one Slave ...
You can add multi Clients to the line, but there can only be one sending Master at the time.
i was looking for one board to run a program completely separate from the other. i have a temperature program with heat and a/c control, but no matter what i do, i can't seem to run this on the same board as all my other listen for functions that i'm running as the temp control is too busy.
i tried putting in millis(), but then everything else stops working.
Heavenorhell05
can you use two arduino boards with one nextion display?
if so, how? i've tried to do it but once i get it all hooked up, it does not work correctly