Social Distancing Alarm

Hello Everyone as we all know that covid-19 is all over the world . So I have taken a small initiative to stop covid-19 by making this alarm. Actually I have coded that the ultrasonic sensor will measure that the distance is less than 2 gaz or not. If it is less than 2 gaz then the buzzer starts beeping and as the person gets closer and closer the buzzer should beep faster and faster. It took me 2 months to make this model .Today in the hour of Trouble this alarm is no less than a boon. I humbly request you all to share this project as much as possible so that our workers, employers and others can be safe from coronavirus till the vaccine arrives. I hope you will share this alarm so that it can be used socially.

Arduino Uno, Ultrasonic Sensor, Buzzer, Battery, Body(In which alarm can be made), Decoration Tape

The Circuit Diagram is Given above. Make all the connections as Directed

You have to use arduino ide app to insert the code in arduino. Download the app from this link - https://www.arduino.cc/en/software

Source code -

int trigpin = 4;

int echopin = 5;

int buzzer= 3;

int timer;

long duration;

int distance;

void setup()

{

pinMode(3,OUTPUT);

pinMode(trigpin, OUTPUT);

pinMode(echopin, INPUT);

}

void loop()

{

digitalWrite(trigpin, LOW);

delayMicroseconds(2);

digitalWrite(trigpin, HIGH);

delayMicroseconds(10);

digitalWrite(trigpin, LOW);

duration = pulseIn(echopin, HIGH);

distance = duration*0.034/2;

timer = distance * 10;

Serial.print("Distance: ");

Serial.println(distance);

if(distance<182) {

digitalWrite(3, HIGH);

delay(50);

digitalWrite(3, LOW);

delay(timer);

}

else

{

digitalWrite(3, LOW);

}

}