Serial.print('<'); // start markerSerial.print(value1);Serial.print(','); // comma separatorSerial.print(value2);Serial.println('>'); // end marker
I will first explore the I2C option. The distance is only a few meters.
Depending on distance, you can use I2C for communication. One Arduino as master, the others as slave.
I will first explore the I2C option. The distance is only a few meters. Problem is that the I2C functionality seems to be dedicated to A4 and A5 ports. I am already using 5 analog input ports so one port short!
You mentioned to use RS485 bus to extend things to another Arduino. Do you know of separate shields for RS485 ?