ANALOG SENSOR INTERFACE USING POTENTIOMETER

 





// C++ code

//

void setup()

{

  pinMode(2, OUTPUT);

  pinMode(4, OUTPUT);

  pinMode(A0,INPUT);

  Serial.begin(9600);

}


void loop()

{

 int x=analogRead(A0);

  if(x>=100 && x<400)

  {

    digitalWrite(2,HIGH);

    digitalWrite(4,LOW);

    Serial.println("1st on");

    Serial.println(x);

    }

  else if(x>=400 && x<800)

  {

    digitalWrite(4,HIGH);

    digitalWrite(2,LOW);

     Serial.println("2nd on");

    Serial.println(x);

  }

  else

  {

    digitalWrite(2,LOW);

    digitalWrite(4,LOW);

    Serial.println(x);

     Serial.println("OFF");

  }

}

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