i want to ask whether uno can serial.print strings while receiving strings through tx rx. i use one uno send "aaa"to the other in the loop, when the second receiving "a",it will send "bbb"to the first one. when i disconnect the second uno tx to the first uno rx,i find the second send "bbb"correctly …

serial communication

11512991203 November 7, 2017, 7:11am 14

Thank you very much, Robin.

I will go to shapeoko forum for help.