Sinhala Arduino Tutorial 21 | How To Use Ir module 

1)Circuit diagram-

2)code -

int ir = 7;

void setup() {
 Serial.begin(9600);
 pinMode(ir,INPUT);
}

void loop() {
  int val = digitalRead(ir);
 
  if (val==0){
    Serial.println("White colour");
  }
  else if (val ==1){
    Serial.println("black colour");
  }

 }


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