Clap Circuit

 

 Clap Circuit with microphone using Arduino Uno

You Tube: Video

Circuit:



Code:

int clap = 2;
int led = 13;
int val = 0;
int valold = 0;
int state = 0;

void setup() {
  pinMode(clap, INPUT);
  pinMode(led, OUTPUT);
}

void loop() {
  val = digitalRead(clap);
  
  if((val == HIGH) && (valold == LOW)) {
    state = 1- state;
    delay(10);
  }
  
  valold = val;
  
  if (state == 1) {
    digitalWrite(led, HIGH);
  }
  else {
    digitalWrite(led, LOW);
  }
}

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