const char analogPin = 0;
const char digitalPin = 4;
const char ledPin = 3;

void setup() {
  // put your setup code here, to run once:
pinMode(analogPin, INPUT);
pinMode(digitalPin, INPUT);
pinMode(ledPin, OUTPUT);

Serial.begin(115200);


}

void loop() {
  // put your main code here, to run repeatedly:

  //Serial.print("Analog: ");
  //Serial.println(analogRead(analogPin));
  //Serial.print("Digital: ");
  //Serial.println(digitalRead(digitalPin));

  if(digitalRead(digitalPin)==1){
    delay(100);
    Serial.println("test");
    if(digitalRead(digitalPin)==1){
      Serial.println("double clap !");
      }
    }
}