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- #include "DigiKeyboard.h"
- int Led = 1 ;// define LED Interface
- int buttonpin = 0; // define the photo interrupter sensor interface
- int val ;// define numeric variables val
- void setup ()
- pinMode (Led, OUTPUT) ;// define LED as output interface
- pinMode (buttonpin, INPUT) ;// define the photo interrupter sensor output interface
- void loop ()
- val = digitalRead (buttonpin) ;// digital interface will be assigned a value of 3 to read val
- if (val == HIGH) // When the light sensor detects a signal is interrupted, LED flashes
- digitalWrite (Led, HIGH);
- digitalWrite (Led, LOW);
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