   pinMode(R, OUTPUT);
   pinMode(Y, OUTPUT);
   pinMode(G, OUTPUT);
+  pinMode(B, OUTPUT);
+  pinMode(ledGND, OUTPUT);
 }
 
 void loop()
 {
   // Lock the sensor GND pin to ground
   digitalWrite(sensorGND, LOW);
+  digitalWrite(ledGND, LOW);
   
   // Read data from the sensor
   mv = ( analogRead(sensorPin) / 1024.0 ) * 5000;

 + LM35DT - OUTPUT on A6
 + LM35DT - GND on A7 (bridged to common GND)
 + LM35DT - INPUT on +5V
 + Green LED (+) on D10
 + Yellow LED (+) on D11
 + Red LED (+) on D12


  // Give heartbeat feedback
  digitalWrite(L, HIGH);
  delay(mv);
  digitalWrite(L, LOW);
  delay(1000-mv);

  // Display output on the leds
  if (C > 0.0) // Cool
    digitalWrite(B, HIGH);
  else
    digitalWrite(B, LOW);

  if (C > 25.0) // Normal
    digitalWrite(G, HIGH);
  else
