#define SERIAL_CLIENT0 0 #define SERIAL_CLIENT1 1 #define SERIAL_CLIENT2 2 void setup() { pinMode(7, OUTPUT); Serial.begin(9600); Serial1.begin(9600); delay(1000); } void loop() { Serial.write("Sending 0 1\r\n"); Serial1.write(SERIAL_CLIENT0); Serial1.write(0x01); delay(1000); Serial.write("Sending 0 0\r\n"); Serial1.write(SERIAL_CLIENT0); Serial1.write(0x00); delay(1000); Serial.write("Sending 1 1\r\n"); Serial1.write(SERIAL_CLIENT1); Serial1.write(0x01); delay(1000); Serial.write("Sending 1 0\r\n"); Serial1.write(SERIAL_CLIENT1); Serial1.write(0x00); digitalWrite(7, LOW); delay(1000); Serial.write("Sending 2 1\r\n"); Serial1.write(SERIAL_CLIENT2); Serial1.write(0x01); delay(1000); Serial.write("Sending 2 0\r\n"); Serial1.write(SERIAL_CLIENT2); Serial1.write(0x00); delay(1000); }