Dog Barking Security Alarm using Arduino, PIR Sensor, and Dog Barking Sound Module

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In this tutorial, we are going to build a Dog Barking Security Alarm using Arduino Nano, PIR Motion Sensor, and Dog Barking Sound Module.

For a step-by-step guide of Circuit Diagram and code, please visit: https://circuitdigest.com/microcontroller-projects/dog-barking-security-alarm-using-arduino-pir-sensor-and-dog-barking-sound-module

A motion sensor dog barking alarm can be a great choice for home security.
The Alarm circuit consists of an Arduino Nano, PIR Motion sensor, LM386 Amplifier IC, Speaker, NPN Transistor, and a couple of resistors and capacitors. BC547 Transistor is used to activate the Alarm whenever PIR Sensor detects motion. The VCC and GND pins of the PIR Sensor are connected to 5V and GND of Arduino, while the OUT pin is connected to digital pin 12 of Arduino.
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#alarmsystem #arduino #motionsensor
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