Collision Switch Module

Introduction

The Crash sensor is a miniature snap-action switch. It is also known as micro switch, an electric switch activated by a small physical force.

feature

• Special module with ports compatible with the expansion board of sensor.
• Output low level when the module is activated; keep outputting high level at the state of release.
• Applied in the detection of collision and touching impact.

Introduction of Pins

Introduction of Pins
OUT	Switching signal output
VCC	positive pole
GND	negative pole

principle

Getting an impact, the switch outputs low level, or else it outputs high level.

Experimental Procedures For Arduino

Step 1: Connect the circuit:

Creshsensor	Uno Board
VCC	5V
GND	GND
D0	2

Step 2: Compile and upload the code Using SunFounder Uno

int ledPin = 13;                // choose the pin for the LED
int inputPin = 2;               // Connect sensor to input pin 3


void setup() {
  Serial.begin(9600);           // Init the serial port

  pinMode(ledPin, OUTPUT);      // declare LED as output
  pinMode(inputPin, INPUT);     // declare Micro switch as input
}

void loop(){
  int val = digitalRead(inputPin);  // read input value
  if (val == LOW) {                // check if the input is HIGH
digitalWrite(ledPin, HIGH);      // turn LED ON
Serial.println("Switch Pressed!");
  } else {
    digitalWrite(ledPin, LOW);     // turn LED OFF 
  }
  delay(50);
}

When the module detects the impact, the serial port will output “Switch Pressed!”Meanwhile, the LED on the pin 13 of the UNO board will light up.