 int sensorReading = 0;      // variable to store the value read from the sensor pin
 int ledState = LOW;         // variable used to store the last LED status, to toggle the light
 
+
 void setup() {
-  Serial.begin(115200);       // use the serial port
-  
-  pinMode(LED_S_GREEN, OUTPUT);
-  pinMode(LED_S_RED, OUTPUT);
-
-// RGB led
-  pinMode(LED_RGB_RED, OUTPUT);
-  pinMode(LED_RGB_GREEN, OUTPUT);
-  pinMode(LED_RGB_BLUE, OUTPUT);
-
-// Switches
-  pinMode(SW1, INPUT_PULLUP);
-  pinMode(SW2, INPUT_PULLUP);
+  // Inital the serial port to output sensor values.
+  Serial.begin(115200);
+   
 }
 
 void loop() {
   // read the sensor and store it in the variable sensorReading:
   sensorReading = analogRead(knockSensor);
-  analogWrite(LED_S_RED, sensorReading);
+  analogWrite(DENBIT_RED, sensorReading);
   Serial.println(sensorReading);
   
   

/** 
   Knock Sensor


    // toggle the status of the ledPin:
    ledState = !ledState;
    // update the LED pin itself:
    digitalWrite(DENBIT_GREEN, ledState);
    // send the string "Knock!" back to the computer, followed by newline
    Serial.println("Knock!");
  }
