Knock sensor module and a digital 13 interface, built-in LED build a simple circuit to produce percussion flasher. Interface comes with digital LED, will knock sensor connected digital 3 interface, when percussion sensor senses measure to percussive signals, LED flashing light. Size: 30x18x6mm (approx) Routines source code: int Led = 13;// define LED Interface int Shock = 3;// define the percussion Sensor Interface int val;// define numeric variables val void setup () pinMode (Led, OUTPUT) ;// define LED as output interface pinMode (Shock, INPUT) ;// define knock sensor output interface void loop () val = digitalRead (Shock) ;// read digital interface is assigned a value of 3 val if (val == HIGH) // When the percussion when the sensor detects a signal, LED flashes digitalWrite(Led, LOW); else digitalWrite(Led, HIGH);
