Published May 21, 2020

Automatic Hand Sensing Water and Soap Tank with Tap

An automatic hand sensing water and soap tank for public places to prevent coronavirus, while prohibiting retouching of the faucet.

AdvancedFull instructions providedOver 1 day1,889

The Hackster Impact Protect Award

The COVID-19 Detect & Protect Challenge

Automatic Hand Sensing Water and Soap Tank with Tap

Things used in this project

Hardware components

SparkFun Ultrasonic Sensor - HC-SR04

Arduino UNO

DC-DC CHARGE PUMP, DOUBLER/INV

Resistor 10k ohm

ControlEverything.com 1-Channel Signal Relay 1A SPDT I²C Mini Module

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Hot glue gun (generic)

Story

INTRODUCTION/ BACKGROUND TO THE PROJECT.

The novel coronavirus (COVID-19 virus) outbreak which was declared a global pandemic by World Health Organization (WHO) in March 2020, is a respiratory illness that is caused by a strain of coronavirus first identified in an outbreak in Wuhan, China. As at 30th of April, 2020, there have been more than 3 million confirmed cases globally and above two hundred thousand deaths.

The disease can spread from person to person contact, both through direct contact with an infected person or through contact with surfaces contaminated with infected viral droplets. With specific treatments or a vaccine not yet available, preventing its spread from person to person is vital to reduce the outbreak's impact on people’s lives, health, livelihoods and the healthcare systems we all rely on.

The COVID-19 virus spreads primarily through droplets of saliva or discharge from the nose when an infected person coughs or sneezes. Handwashing, when done correctly, is one of the most important prevention measures for COVID-19.

This can be achieved when people are provided with safe water, sanitation and adequate hygiene practice during hand washing while also prevent retouching of the faucet in order to avoid recontamination and further posing risk to another user of the same water source or tap.

Using the automatic hand sensing water and soap tank with tap, would not only provide people with hand washing and proper hygiene facilities, but would also avoid recontamination as people need not have any contact with the tap to wash their hands.

STATEMENT OF PROBLEMS.

While the government of Nigeria, has taken adequate measures to curb the spread of this virus, by ensuring a lockdown policy in states of high incidence of the coronavirus, it is observed that most communities don't have access to running water in their Motor Parks, which is the major contact point of people moving in, out and around the cities when the lockdown is relaxed. This would increase the risk of spreading the virus from person to person contact. According to UNICEF, In total, only 3 out of 5 people worldwide have basic handwashing facilities, according to the latest data.

It is thus important that adequate measures are taken, that allows people to stay safe and alive by keeping proper hygiene through washing their hands frequently in these parks, in order to reduce the spread of this virus and most importantly defeat coronavirus.

BENEFIT OF THE PROJECT TO THE COMMUNITY.

The benefit of this project is geared towards the fight against the novel coronavirus pandemic, through the provision of safe water, sanitation and adequate hand washing hygiene which is essential to protecting human health during this infectious disease outbreak.

The Maraba Motor Park is one of the major entrance for travelers within and outside the state. Adequate to give access to frequent handwashing and safety hygiene in preventing the spread of coronavirus, while prohibiting retouching of the faucet in order to avoid recontamination.

Materials:

The major Materials used in this project are:

1. Transparent Pipes

2. Jumper Wire

3. 9 volts Battery

4. Ohms Resistor

5. Arduino Uno

6. Hc-sr04 Ultrasonic sensor

7. Relay Module

8. DC Powered Pump

9. Water Tank

10. Soap Container

11. Metal tank stand

12. Solar Power Source

13. Ceramic Zinc

14. Outlet Pipes

Code

Code

Code

Liquid

To program Arduino for water level controller, first we define all the pin that we are going to use in the project for interfacing external devices like relay,

#define trigger 10
#define echo 11
#define motor 8
#define buzzer 12

Then we initialize all the devices used in project.

lcd.begin(16,2);
pinMode(trigger,OUTPUT);
pinMode(echo,INPUT);
pinMode(motor, OUTPUT);
pinMode(buzzer, OUTPUT);
lcd.print(" Water Level ");
lcd.setCursor(0,1);
lcd.print(" Indicator ");
delay(2000);

Now initialize the ultrasonic sensor module and read time of sending and receiving time of ultrasonic waves or sound by using pulseIn(pin). Then perform calculations and display the result on 16x2 LCD by using appropriate functions.

digitalWrite(trigger,HIGH);
delayMicroseconds(10);
digitalWrite(trigger,LOW);
delayMicroseconds(2);
time=pulseIn(echo,HIGH);
distance=time*340/20000;
lcd.clear();
lcd.print("Water Space In ");
lcd.setCursor(0,1);
lcd.print("Tank is: ");
lcd.print(distance);
lcd.print("Cm");
After it we check conditions if water tank is full or water level is LOW, and take actions accordingly.

if(distance<12 && temp==0)
{
digitalWrite(motor, LOW);
digitalWrite(buzzer, HIGH);
lcd.clear();
lcd.print("Water Tank Full ");
lcd.setCursor(0,1);
lcd.print("Motor Turned OFF");
delay(2000);
digitalWrite(buzzer, LOW);
delay(3000);
temp=1;
}

else if(distance<12 && temp==1)
{
digitalWrite(motor, LOW);
lcd.clear();
lcd.print("Water Tank Full ");
lcd.setCursor(0,1);
lcd.print("Motor Turned OFF");
delay(5000);
}

#include <LiquidCrystal.h>
 
#define trigger 10
#define echo 11
#define motor 8
#define buzzer 12
 
LiquidCrystal lcd(7,6,5,4,3,2);
 
float time=0,distance=0;
int temp=0; 
void setup()
{
 lcd.begin(16,2);
 pinMode(trigger,OUTPUT);
 pinMode(echo,INPUT);
 pinMode(motor, OUTPUT);
 pinMode(buzzer, OUTPUT);
 lcd.print("  Water Level ");
 lcd.setCursor(0,1);
 lcd.print("   Indicator  ");
 delay(2000);
}
 
void loop()
{
 lcd.clear();
 digitalWrite(trigger,LOW);
 delayMicroseconds(2);
 digitalWrite(trigger,HIGH);
 delayMicroseconds(10);
 digitalWrite(trigger,LOW);
 delayMicroseconds(2);
 time=pulseIn(echo,HIGH);
 distance=time*340/20000;
 lcd.clear();
 lcd.print("Water Space In  ");
 lcd.setCursor(0,1);
 lcd.print("Tank is: ");
 lcd.print(distance);
 lcd.print("Cm");
 delay(2000);
 if(distance<12 && temp==0)
 {
     digitalWrite(motor, LOW);
     digitalWrite(buzzer, HIGH);
     lcd.clear();
     lcd.print("Water Tank Full ");
     lcd.setCursor(0,1);
     lcd.print("Motor Turned OFF");
     delay(2000);
     digitalWrite(buzzer, LOW);
     delay(3000);
     temp=1;
 }
 
  else if(distance<12 && temp==1)
 {
     digitalWrite(motor, LOW);
     lcd.clear();
     lcd.print("Water Tank Full ");
     lcd.setCursor(0,1);
     lcd.print("Motor Turned OFF");
     delay(5000);
 }
 
 else if(distance>30)
 {
   digitalWrite(motor, HIGH);
   lcd.clear();
   lcd.print("LOW Water Level");
   lcd.setCursor(0,1);
   lcd.print("Motor Turned ON");
   delay(5000);
   temp=0;
 }
}

Credits

Shobajo AbdulAzeez

1 project • 3 followers

Comments

Awards

The Hackster Impact Protect Award

The COVID-19 Detect & Protect Challenge

Automatic Hand Sensing Water and Soap Tank with Tap