light trigger

gistfile1.cpp

int ledPin = 13;
int drumSensor = 0;               
byte val = 0;
int statePin = LOW;
int THRESHOLD = 50;

void setup() {
 pinMode(ledPin, OUTPUT); 
 Serial.begin(9600);
}

void loop() {
  val = analogRead(drumSensor);     
  if (val >= THRESHOLD) {
    statePin = !statePin;
    digitalWrite(ledPin, HIGH);
    delay(100); 
    digitalWrite(ledPin, LOW);
  }
}