AUTOMATIC SANITIZER DISPENSER - ARDUINO PROJECT

 

AUTOMATIC SANITIZER DISPENSER - ARDUINO PROJECT 

 

List of Components :

 

• Arduino Nano / Uno

• UltraSonic Senor
  

• Relay Module ( Single Channel )
  

• DC Motor Pump

• 9 V Battery
  

•  Bread board and Jumpers ( if needed)

 

 

Circuit Diagram :

 

 

 

 

About the Project :

This project is a needed one in this pandemic situation. As many of them requested I made this project. Here we are using the components mentioned above. Once a person comes and stands before the system the machine will automatically detect it and it will pour a little amount of sanitizer.

Code Explanation :

According to the code we have set the machine in such a way that if the person comes closer by 10 cm the motor will automatically switch on. And the motor will be auto cutted after 1 sec. The system will only pour the sanitizer once there is any obstacle found within 10 cm from the machine.

 

Source Code :

 

 #include <Wire.h>


#define trigPin 8

#define echoPin 9



void setup()
{
 
 pinMode(trigPin, OUTPUT);
 pinMode(echoPin, INPUT);
 Serial.begin(9600);
 pinMode(7,OUTPUT);
 digitalWrite(7,HIGH);
 
}

void loop()
{
 
int duration, distance;
    digitalWrite(trigPin, HIGH);
    delayMicroseconds(100);
    digitalWrite(trigPin, LOW);
    duration = pulseIn(echoPin, HIGH);
    distance = (duration / 2) / 29.1;
    Serial.println(distance);
    delay(100);


if (distance < 10)
{
delay(1000);
  digitalWrite(7,LOW);  // Pin 9 connected to Relay (Motor)
   delay(500); // wait for a second
  digitalWrite(7 , HIGH);    // turn the motor off by making the voltage LOW
}

    
}

 

 

 

 

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