 const int vibrationMotorPin = 3;
 const int transducerPin = 5;  
 const int laserPin = 6;
-const int bluetoothPowerPin =  13;
+const int ledPin =  13;
 
 // note: blue and green pins were wired in reverse w.r.t. the BL-L515 datasheet
 const int redPin = 9;

    pinMode(vibrationMotorPin, OUTPUT);
    pinMode(transducerPin, OUTPUT); 
    pinMode(laserPin, OUTPUT);
    pinMode(bluetoothPowerPin, OUTPUT);
    pinMode(redPin, OUTPUT);
    pinMode(greenPin, OUTPUT);
    pinMode(bluePin, OUTPUT);

        }
    }
#endif

    readKeys();
    
    if (keyState != lastKeyState) {
