WHAT YOU NEED

Published March 25, 2020 © GPL3+

Ultrasonic door sensor

Know if a thief is entering your house or your dad.Also i want to say a line"No one makes a peep but it makes a beep"

BeginnerShowcase (no instructions)408

Things used in this project

Hardware components

Ultrasonic Sensor - HC-SR04 (Generic)

Jumper wires (generic)

Breadboard (generic)

Buzzer

Arduino UNO

Battery, 9 V

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Tape, Double Sided

Story

HELLO EVERYONE .I AM HINDOL AND IAM MAKING THIS SIMPLE PROJECT OF A DOOR SENSOR WHICH BEEPS IF ANYONE IS ABOUT TO RING THE BELL.I HAVE CONNECTED TRIG PIN TO PIN 12 OF UNO AND ECHO PIN TO PIN 11.I HAVE CONECTED THE PINS OF HC SR04 USING 4 SETS OF 3 MALE-FEMALE JUMPER WIRES .I COULD NOT MAKE A HOLE IN THE WALL SO I SENT THE WIRES THROUGH THE NEARBY WINDOW.IF YOU WANT YOU CAN MAKE A DRILL HOLE THROUGH YOUR WALL.I HAVE JUST STUCK THE SENSOR ON THE WALL UNDER THE DOORBELL BUT IF ANYONE HAS 3D PRINTER HE OR SHE CAN PRINT A CASE FOR IT. YOU CAN ALSO STICK IT ANYWHERE ON ANY WALL AS A SURVEILLIANCE DEVICE . YOU CAN ALSO MAKE HOLES ABOUT THE SHAPE OF ULTRASONIC SENSOR FROM INSIDE YOUR HOUSE SO THAT NO ONE CAN CUT THE WIRES OF YOUR DEVICE.I HAVE ALSO USED A 8 WAY DIP SWITCH TO CONTROL THE FLOW OF CURRENT . ANYONE CAN CONNECT AN ARDUINO ADAPTER TO SUPPLY ELECTRICITY TO THE UNO. I HAVE CONNECTED THE POSITIVE PIN OF BUZZER TO PIN 9 OF UNO.

WHAT YOU NEED.

HARDWARE:

ARDUINO UNO

ULTRASONIC SENSOR (HC-SR04)

9 V BATTERY(OR 5 V WALL ADAPTER)AND 9 V BATTERY CONNECTOR

8 WAY DIP SWITCH

BREADBOARD

JUMPER WIRE(MALE-MALE,MALE-FEMALE)

STATIONARIES:

DOUBLE SIDED TAPE

SOFTWARE:

ARDUINO IDE OR ARDUINO WEB EDITOR.

WIRING AS CIRCUIT DIAGRAM . CODE IS GIVEN BELOW . HAPPY BUILDING.

AND SALUTE TO ALL CORONAVIRUS HEROES WHO ARE HELPING US FIGHT THIS DISEASE.

YOU CAN DOWNLOAD ARDUINO IDE HERE.

Code

ARDUINO CODE

int trigPin = 12;
int echoPin = 11;
int pb = 9;


void setup() {
  Serial.begin(9600); 
   pinMode(pb, OUTPUT);
   pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  // put your setup code here, to run once:

}

void loop() {
  long duration, distance;
  digitalWrite(trigPin,HIGH);
  delayMicroseconds(1000);
  digitalWrite(trigPin, LOW);
  duration=pulseIn(echoPin, HIGH);
  distance =(duration/2)/200.1;
  Serial.print(distance);
  Serial.println("CM");
  delay(10);
 
 if((distance<=10)) 
  {
    digitalWrite(pb, HIGH);
}
if((distance>=10)) 
  {
    digitalWrite(pb, LOW);
}
}

Credits

HINDOLROY

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