Published June 13, 2021

Touchless Soap/ Sanitizer Dispenser

Bored of pressing your dispenser and want to get rid? So, get out of the box cause this is going to help you, Just put your hand and ye!!!.

IntermediateShowcase (no instructions)1.5 hours491

Things used in this project

Hardware components

Arduino UNO

SG90 Micro-servo motor

Solderless Breadboard Half Size

Jumper wires (generic)

easySensors Infrared Obstacle Avoidance IR Sensor Module

USB-A to B Cable

Connector Adapter, DC Power - 2.1mm

9V battery (generic)

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Tape, Double Sided

Thread

Hot glue gun (generic)

Story

Introduction

Hand hygiene has been identified as the sole best solution for prevention and reduction in the spread of the deadly virus. The growing concerns pertaining to hand hygiene owing to the prevalence of multitude illness across the globe, which has revolutionized the demand of Contactless hand sanitizer.

This Touch-less Soap/ Sanitizer dispenser is aimed to stop the spread of this deadly virus along with a message to follow the guidance issued by World Health Organization (WHO) strictly.

Project

This device is controlled by Arduino Uno which is actually triggered by the help of a proximity sensor which when detects a hand across it sends low state value to the MP. There are two micro servo motors fitted at both the sides of the dispenser in which a thread is tightened between both servo horns crossing through the top of dispenser head which in turn used to push the head by utilizing a lever mechanism.

As the Arduino reads the signal from the sensor it then drives both the servos making approx. 120 degree angle in such a way that the dispenser head got pushed resulting in the liquid to come out.

Advantages of this Design :

It does not make extra liquid to come out of the dispenser.
The coding is done in such a way that it make the system to run for as many no. of times unless the hand is not removed.
Infrared sensor instead of Sonar sensor is used to detect the change rapidly.
Two servo motors to make the lever mechanism run smoothly.
Better Grip with the thread for long head type dispensers.

Getting all the components :

Step 1 : Gather all the components as shown below in the figure: Arduino Uno, Servo Motors, Proximity Sensor, Servo horn joined with a thread as shown, Arduino cable, Breadboard, Jumper wires(Male to Male).

Step 2 : Fix the Arduino Uno and the breadboard as per the adjustment according to your Dispenser, Attach the servo to both sides with the help of Glue gun and then attach the horn crossing to the Dispenser head so that it can push it.

Video Demonstration :

Code

AUTOMATIC HAND WASH DISPENSER

/* *******************AUTOMATIC HAND WASH DISPENSER****************** */
#include <Servo.h>
Servo servo1; // at pin 2
Servo servo2; // at pin 3

int irPin = 4; // IR sensor at pin 4
int sensorOut = HIGH; // HIGH at No obstacle

void setup() {
  servo1.attach(2);
  servo2.attach(3);
  Serial.begin(9600);
  while(Serial.available())
  Serial.read();
  servo1.write(0); // Put servo1 at home position
  servo2.write(0); // Put servo2 at home position

}

void loop() {
  sensorOut = digitalRead(irPin);
  if(sensorOut == LOW)
  {
    Serial.println("Hand Detected!!");
    servo1.write(120);
    servo2.write(120);
    delay(10);
    servo1.write(0);
    servo2.write(0);
    delay(10);
  }
  else
  {
    Serial.println("Waiting for your hand :)");
    servo1.write(0);
    servo2.write(0);
  }
}

Credits

Utkarsh Srivastava

2 projects • 2 followers

Touchless Soap/ Sanitizer Dispenser

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Introduction

Project

Advantages of this Design :

Getting all the components :

Video Demonstration :

Schematics

AUTOMATIC HAND WASH DISPENSER

Code

AUTOMATIC HAND WASH DISPENSER

Credits

Utkarsh Srivastava

Comments

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Touchless Soap/ Sanitizer Dispenser

Touchless Soap/ Sanitizer Dispenser

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Introduction

Project

Advantages of this Design :

Getting all the components :

Video Demonstration :

Schematics

AUTOMATIC HAND WASH DISPENSER

Code

AUTOMATIC HAND WASH DISPENSER

Credits

Utkarsh Srivastava

Comments

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