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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);




digitalWrite(Led, HIGH);



Additional information

Weight 10 g
Dimensions 20 × 15 × 15 mm


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