IR SENSORS :
IR STANDS FOR INFRARED RAYS EMITTED THROUGH IR EMITTER LED AND THIS RAYS RECIEVED BY IR RECIEVER LED .
DISTANCE ADJUSTMENT IS GIVEN IR SENSOR FOR TRANMISSION DISTANCE OF INFRARED RAYS .
VCC IS POSITIVE PIN SHOULD CONNECTED TO 5V PIN IN ARDUINO MICROCONTROLLER.
GND IS NEGATIVE PIN SHOULD CONNECTED TO ARDUINO GND PIN .
OUTPUT PIN IS CONNECTED TO ANY DIGITAL PIN MENTIONED IN COMPUTER PROGRAM.
START TYPING PROGRAM FOR IR SENSOR .
CONNECT ARDUINO CABLE TO LAPTOP/PC.
VERIFY THE PROGRAM , COMPILE AND UPLOAD IT.
OUTPUT OF PROGRAM IS ACHIEVED BY KEEPING HAND IN FRONT OF IR EMITTER LED WHICH IS THEN RECIEVED BY IR RECIEVER LED.