SENSOR MODULE – KEY SWITCH/ BUTTON

This module acts an external control to the Arduino without the need to mount the switch on a breadboard. When the key is pressed the build in LED on pin 13 will be turned off.
Connections:
Pin – = GND, connect to GND of the Arduino
Pin (middel pin) +5 v, connect to Arduino +5
Pin S signal, connect to Arduino pin 10



Use the LED on digital pin 13, and connect the button module input to digital 3, and
when button is pressed, the LED will turn on, otherwise, it will turn off.
int Led=13;
int buttonpin=3;
int val;
void setup()
{
pinMode(Led,OUTPUT);
pinMode(buttonpin,INPUT);
}
void loop()
{
val=digitalRead(buttonpin);
if(val==HIGH)
{
digitalWrite(Led,HIGH)
}
else
{
digitalWrite(Led,LOW)
}
}