public HHLEDMechanism() {
//initialize actuators and sensors
masterButton = new GRTSwitch(MASTER_BUTTON_PIN, 50);
autoButton = new GRTSwitch(AUTO_BUTTON_PIN, 50);
masterLED = new GRTLED(MASTER_LED_PIN);
autoLED = new GRTLED(AUTO_LED_PIN);
//add actuators and sensors
addSensor(MASTER_BUTTON_ID, masterButton);
addSensor(AUTO_BUTTON_ID, autoButton);
addActuator(MASTER_LED_ID, masterLED);