What is hall effect sensor? | how to use it with arduino | applications ...

Code:-

int ledPin = 13; // LED connected to digital pin 13

int inPin = 2;   // pushbutton connected to digital pin 2

int val = 0;     // variable to store the read value



void setup()

{

  pinMode(ledPin, OUTPUT);      // sets the digital pin 13 as output

  pinMode(inPin, INPUT);      // sets the digital pin 7 as input

}



void loop()

{

  val = digitalRead(inPin);   // read the input pin

  digitalWrite(ledPin, !val);    // sets the LED to the button's value

}