Touch Sensor

int ledPin =8;
int thresholdValue=400;
void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(ledPin,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
int sensorValue=analogRead(A0);
Serial.println(sensorValue);
if(sensorValue>thresholdValue)
digitalWrite(ledPin,HIGH);
delay(200);
digitalWrite(ledPin,LOW);
}