Published November 25, 2018 © GPL3+

Arduino UNO and Vibration Sensor with Relay

When the vibration module detects vibration, the lamp will go on for 2 seconds and this for 3 times.

BeginnerFull instructions provided1 hour7,325

Arduino UNO and Vibration Sensor with Relay

Things used in this project

Hardware components

Arduino UNO

SW-420 Vibration sensor module

Optocoupler PC817

Transistor BC 547

1N4007 – High Voltage, High Current Rated Diode

Relay 5V DC

5 mm LED: Red

A second LED is used to show the relay contact ON OFF

Resistor 220 ohm

Breadboard (generic)

Jumper wires (generic)

4xAA battery holder

In this project I used a battery holder with 3 AA batteries

Story

The idea: A big light must flash 3 times when at long distance shooting the target is hit. (Target is a metal round piece attached on a metal frame) How it works: When the target is hit, the sensitive vibration sensor, fixed on the back of the target frame, will detect vibration. To indicate the target was hit, the light will flash 3 times. (2sec ON, 1 sec OFF, 3 times)

The sensor module is powered by the Arduino. With the help of the Optocoupler PC817 we keep the circuit for the relay seperated from the Arduino UNO.

The relay is powered by the external source, in this case 3x AA battery.

In the video, you can see that the LED, connected to the relay is replaced by a light, vissible from easely 200meters.

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Code

Vibration_sensor.ino

//Vibration Sensor Module (Code)Arduino with relay and external 5V power source.
  
int vib_pin=2;
int led_pin=13;


// put your setup code here, to run once:
void setup() { 
  pinMode(vib_pin,INPUT);
  pinMode(led_pin,OUTPUT);
}


  // put your main code here, to run repeatedly:
void loop() {
  int val;
  val=digitalRead(vib_pin);
  if(val==1)
  {
    digitalWrite(led_pin,LOW);
    delay(2000);
    digitalWrite(led_pin,HIGH);
    delay(1000);
    digitalWrite(led_pin,LOW);
    delay(2000);
    digitalWrite(led_pin,HIGH);
    delay(1000);
    digitalWrite(led_pin,LOW);
    delay(2000);
    digitalWrite(led_pin,HIGH);
    delay(1000);
    
   }
   else
   digitalWrite(led_pin,HIGH);
}

Arduino UNO and Vibration Sensor with Relay

Things used in this project

Hardware components

Story

Schematics

Arduino UNO with Vibration sensor module and relay

Code

Vibration_sensor.ino

Credits

MichDragstar

Comments

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Arduino UNO and Vibration Sensor with Relay

Arduino UNO and Vibration Sensor with Relay

Things used in this project

Hardware components

Story

Schematics

Arduino UNO with Vibration sensor module and relay

Code

Vibration_sensor.ino

Credits

MichDragstar

Comments

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