//MCU Program

            int LeftLED = 2;
            int RightLED = 4;

            void setup() {
                pinMode(LeftLED, OUTPUT);
                pinMode(RightLED, OUTPUT);
                Serial.begin(9600);
            }

            void loop() {

                if (Serial.available() > 0) {

                char input = Serial.read(); // read from serial port

                if (input == 'L') {         // if message recieved
                digitalWrite(LeftLED, HIGH);
            }

                if (input == 'R') {
                digitalWrite(RightLED, HIGH);
            }

                if (input == '0') {
                digitalWrite(LeftLED, LOW);
                digitalWrite(RightLED, LOW);
            }
  
                delay(200);

            }
        }
}