Project tutorial
Knockless Door Bell

Knockless Door Bell © GPL3+

A knockless door bell using an Arduino and IR sensor.

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Components and supplies

Necessary tools and machines

09507 01
Soldering iron (generic)
cardboard box

Apps and online services

About this project

In this project I made a knockless door bell using an Arduino Uno and IR sensor.

Just take a look at the video and follow the complete step-by-step instructions to make this project.

This project can be used in home to make a door bell.

Steps:

1. Gather all the components as shown below.

2. Connect LED and resistor on breadboard as shown below.

3. Connect IR sensor on breadboard as shown below.

4. Connect buzzer as shown.

5. Connect jumper wires to all terminals of components.

6. Connections to arduino are as follows.

- Connect IR sensor Vcc pin to Arduino +5v pin.

- Connect IR sensor Gnd pin to GND of Arduino.

- Connect IR out pin to A5 of Arduino.

- Connect buzzer +ve pin to D13 pin of Arduino.

- Connect LED +ve pin to D13 of Arduino.

- Connect all the -ve pins to GND.

7. Now upload the code and test the circuit.

8. Place all the components in small box as shown below.

9. Stick the box on the door.

The knockless door bell is ready for your home or any place. It can also be a great school project for kids!

If you like this project, subscribe to my YouTube channel...

Code

CodeArduino
//www.youtube.com/Electronics is Fun//
//www.facebook.com/Electronics is Fun//


int analogInPin = A5;  // Analog input pin that the potentiometer is attached to

int out =13;
int sensorValue = 0;        // value read from the pot


void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
  pinMode(out, OUTPUT);
}

void loop() {
  // read the analog in value:
  sensorValue = analogRead(analogInPin);


  Serial.print("sensor = " );
  Serial.println(sensorValue);

  delay(200);
  
  if(sensorValue<500)
  {
    digitalWrite(out,1);
  }
  else
  {
    digitalWrite(out,0);
  }
  
}

Schematics

Circuit Diagram
Circuit yhjhq2jgwv

Comments

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