Broken light sensor module for Arduino

Description

• Photo interrupter module and a digital interface, built-in 13 LED build a simple circuit to produce.photo-interrupter warning lamp
• It comes with digital interfaces of the LED, the light blocking access number 3 sensor interfaces,sensing when the light interrupter
• Device senses a key signal, LED lights, otherwise off.
• Routines source code:
• int Led = 13 ;// define LED Interface
• int buttonpin = 3; // define the photo interrupter sensor interface
• int val ;// define numeric variables val
• void setup()