How to make Homemade Fridge घर पर बनाए मटका से फ्रिज Desi Jugad

                            ARDUINO CODE

const int trigPin = 3;

    const int echoPin = 2;

    #define DCwater_pump 8

    // defines pins

    long duration;

    int distance;

    void setup() 

{

    pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output

    pinMode(echoPin, INPUT); // Sets the echoPin as an Input

    pinMode(DCwater_pump, OUTPUT);

    Serial.begin(9600); // For serial communication

}

    void loop() 

{

    digitalWrite(trigPin, LOW);

    delayMicroseconds(2);

    digitalWrite(trigPin, HIGH);

    delayMicroseconds(10);

    digitalWrite(trigPin, LOW);

    duration = pulseIn(echoPin, HIGH);

    //Distance calculation

    distance= duration*0.034/2;

    // Printinng the distance on the Serial Monitor

    Serial.print("Distance: ");

    Serial.println(distance);

    

 if (distance < 20)

{

 digitalWrite(DCwater_pump,LOW);

 Serial.println("DC Pump is ON Now!!");

 delay(50);

}

else

{

 digitalWrite(DCwater_pump,HIGH);

 Serial.println("DC Pump is OFF Now!!");

 delay(500);

}

}