Hand wash Unit

Objective :To install the Touchless mobile hand wash unit with manual backup

The idea comes in picture due to current scenario of Covid-19 pandemic. At early days of June Fab foundation initiated one online competition for the “Mobile Hand Wash Unit(As hand washing is a key cure can be taken)”,There I have to just proposed idea, CAD model & Photo of prototype. The above picture is of same prototype. There I got first price of “Forest CNC Award” Then the project is to replicate same at Vigyan Ashram campus.

Automated hand wash unit:

Method -1

Electronic system Components required:

  • Arduino nano
  • Servo motor
  • Ultrasonic sensor
  • 5 V,1A adapter

Circuit Diagram

After connection of component as shown in above image program uploaded is

include

include

const int trigPin = 2; // Trigger Pin of Ultrasonic Sensor
const int echoPin = 3; // Echo Pin of Ultrasonic Sensor
Servo Myservo;

void setup()
{
Serial.begin(9600); // Starting Serial Terminal

Myservo.attach(4); // Signal Pin of Servo

pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);

}

void loop()
{
long duration, cm;
pinMode(trigPin, OUTPUT);
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);

pinMode(echoPin, INPUT);
duration = pulseIn(echoPin, HIGH);
cm = microsecondsToCentimeters(duration);

Serial.print(“Distance:”);
Serial.print(cm);
Serial.print(“cm”);
delay(100);

if(cm >= 15
){

Myservo.write(0);
}
else {
Myservo.write(120);

}

Serial.println();
delay(1000);

}

long microsecondsToCentimeters(long microseconds)
{
return microseconds / 29 / 2;
}

The System after installation at Vigyan ashram looks,

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Method -2

  • Arduino nano
  • Water pump
  • Ultrasonic sensor
  • 5 V,1A adapter

Circuit Diagram:

System