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Arduino home alarm system

Senses movement in a room, shows an alert on the display, and notifies your phone over Bluetooth. An excellent first project — no soldering at all.

Difficulty: Beginner
Build time: 2 hours
Soldering: None needed
Estimated total: 710EGP

Ask about this project

What you will learn

Reading a PIR motion sensor and tuning its sensitivity
Driving an LCD over I2C
Sending an alert to a phone over Bluetooth
Building arm and disarm logic

What is in the box

Untick anything you already own and the total updates as you go.

Core parts

The project does not work without these.

Arduino Uno R3ATmega328P
In stock
Quantity: ×1320EGP
HC-SR501 PIR motion sensorHC-SR501
Low stock
Quantity: ×155EGP
16×2 LCD with I2C backpackHD44780
In stock
Quantity: ×1135EGP

Accessories

Recommended, and included by default.

HC-05 Bluetooth moduleHC-05
Out of stock
Quantity: ×1165EGP
Out of stock, cannot be added
830-point breadboardMB-102
In stock
Quantity: ×170EGP
40× DuPont jumper wires, male-to-maleDUPONT-MM-40
In stock
Quantity: ×135EGP
5V 2A power adapterPSU-5V2A
In stock
Quantity: ×195EGP

Optional add-ons

Nice to have. Not ticked to begin with.

HC-SR04 ultrasonic distance sensorHC-SR04
Low stock
Quantity: ×145EGP