const int ledPin =6; int sensorVal; void setup(){ Serial.begin(9600); pinMode(led,OUTPUT); } void loop(){ sensorVal = analogRead(A2); // Read the sensor if (sensorVal > 175){ // If the light value is higher than 175 analogWrite(ledPin,0); // Turn of led for 400mSec Serial.println(" HIT!"); delay(400); }else{ // If light value is over 175 analogWrite(ledPin,255); // Led is on } Serial.print(sensorVal); delay(10); }