1. Connecting the Arduino Board to the HC-SR04 Ultrasound Sensor
2. Connecting a Buzzer to the Arduino Board
3. Connecting a power source(9V battery) to the Arduino Board
4. The Final Packaging

Published May 10, 2020 © GPL3+

Wearable Social Distance Detector Gadget

A well-built ultrasound-based Arduino-programmed social distance detector, which can be helpful in this dreadful corona virus crisis.

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Wearable Social Distance Detector Gadget

Things used in this project

Hardware components

Arduino 101

Ultrasonic Sensor - HC-SR04 (Generic)

9V battery (generic)

9V Battery Clip

Jumper wires (generic)

Buzzer

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Tape, Black

Story

Given the Corona Virus situation across the globe, a will rose inside me to contribute to the war against this virus. I already had pretty good knowledge about Arduino programming, and I was thinking about creating something new. This idea suddenly popped into my head, as I was browsing through some old object such as my ultrasound sensor, and my other robotic components.

Click below to learn more about how this works--

Here is a video on how it works.

These are the steps in creating this project--

1. Connecting the Arduino Board to the HC-SR04 Ultrasound Sensor

Connect the 'echo' pin and 'trig' pin on the Ultrasound Sensor to the respective pins(defined in the code) on the Arduino Board(here in this code, pins 2 and 3). Then, connect the Vcc and Gnd pins on the sensor to the 5V and Gnd pins on Arduino Board respectively. With this, step 1 is done.

2. Connecting a Buzzer to the Arduino Board

In the code, I have given output to pin 11, hence the Buzzer is connected with the positive terminal at pin 11 and the negative terminal at Gnd.

3. Connecting a power source(9V battery) to the Arduino Board

Connect a 9V battery to the Arduino Board; with the battery's positive terminal at 5V on the Arduino Board and the negative terminal at Gnd.

4. The Final Packaging

This step is up to you! You can package the entire circuit into some stylish and durable mobile holder, or any other object like that; such that the gadget can be clipped on your belt and is thus convenient while going out.

I hope these steps will be helpful to create this project; and I hope it will contribute in the war against today's greatest threat-- COVID-19

Thank you!

Code

Wearable Social Distance Detector Gadget Code

// created by aarav_barnwal
// created on 2nd May 2020
// name-- wearable social distance detector gadget 
#define echoPin 2 
#define trigPin 3 

// defines variables
long duration; 
int distance; 
void setup() {
  pinMode(11,OUTPUT);
    
  pinMode(trigPin, OUTPUT); 
  pinMode(echoPin, INPUT); 
  Serial.begin(9600); 
  Serial.println("Ultrasonic Sensor HC-SR04 Test for social distance detector"); 
  Serial.println("with Arduino UNO R3");
  
}
void loop() {
  
 
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);

  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  duration = pulseIn(echoPin, HIGH);
 
  distance = duration * 0.034 / 2; 
  
  delay(100);
  
 
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
      
  if (distance < 182.88) {
      digitalWrite(11, HIGH);
    } else {
      digitalWrite(11, LOW);
    }
   
  }

Credits

Aarav Barnwal

1 project • 0 followers

Wearable Social Distance Detector Gadget