i need to send and receive data from UNO board to another one
first thought would be soft serial, its available in the ide
Yep.
With ordinary serial just connect RX from board A to TX on Board B, TX from Board A to RX on Board B and very important connect ground from board A to ground on board B.
MikMo:
Yep.With ordinary serial just connect RX from board A to TX on Board B, TX from Board A to RX on Board B and very important connect ground from board A to ground on board B.
Not need any code for interface
You just use the ordinary serial commands in your Arduino code: