Repository files navigation Intruder Alarm System using PIR Sensor This project demonstrates how to build an Intruder Alarm System using an HC-SR501 PIR sensor, Arduino Uno, a 5V relay, and a buzzer.

Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available components. One advantage of using Arduino as a security system is the flexibility!

Working of Dog Barking Security using Arduino Make the connections as per the circuit diagram and upload the code to Arduino Nano. When powered, the PIR sensor detects the IR rays emitted from the ...

Initialization: Sets up pin modes for the LED, PIR sensor, and piezo buzzer. Begins serial communication with a baud rate of 9600. Delays for 5 seconds to ensure stable start-up. Motion Detection: ...

Code explanation of the Arduino PIR Interfacing The code explanation of the code is as follows. The complete code can be found at the absolute bottom of the blog. const int pirPin = 5; This line ...

This PIR sensor based security system is designed using UM3561 IC. The proposed system mainly consists of PIR sensor, UM3561 IC, Speaker, transistors. The UM3516 IC is a Siren generator IC. Circuit ...

Fig. 1: Author’s prototype Fig. 2: Block diagram of motion sensor alarm Circuit and working The circuit diagram of the motion sensor alarm is shown in Fig. 3. It consists of a PIR motion sensor (MS1), ...

All you’ll need is an Arduino Yún, PIR sensor, a USB camera, speakers, and a USB sound card. It’s a bit on the expensive side, but it’s infinitely reusable and easy to move from place to place.

Step 3: Working Of The Circuit The working of this circuit is very simple. At first, the state of the PIR sensor is set to LOW. it means that no motion is detected. When a motion will be detected by ...