Home Security Motion Sensor Kit with Arduino Mega + Sensor
Build a Full Home Security System with Arduino Mega – Motion, Smoke & Flood Alerts Displayed on LCD
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform your room into a monitored safe zone. This kit lets you wire up motion detectors, door/window switches, a smoke sensor, and a water leak detector to a central Arduino Mega. An LCD panel shows which zone triggered an alert in real time – the same logic used in professional alarm panels.
What You'll Build
A fully-functional security panel that scans two PIR motion zones, three reed switch door/window contacts, a smoke/gas detector, and a flood probe. When any sensor is tripped, the buzzer sounds and the 16x2 LCD screen updates instantly to show the alert location. You can expand it later to trigger automatic lights or send phone notifications.
What You'll Learn
- How to interface multiple digital and analog sensors with an Arduino Mega without pin conflicts.
- Reading PIR, reed switch, MQ-2 gas sensor, and water sensor signals and converting them into actionable logic.
- Controlling a 16x2 LCD via I2C backpack – wiring, addressing, and multi-line status updates.
- Designing a failsafe alert system with a buzzer that triggers only on genuine events, not noise.
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| HC-SR501 PIR | 2 |
| Reed Switch | 3 |
| MQ-2 | 1 |
| Water Sensor | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| Active Buzzer | 1 |
| 10kΩ Resistors | 15 |
| 220Ω Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 35 |
| 9V Battery Snap | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Designed for CBSE Class 11-12 students building practical physics or electronics projects, B.Tech ECE/EEE students prototyping for Smart India Hackathon entries, and ATL tinkering lab mentors demonstrating real-world home automation. If you've already blinked an LED and want to tackle multi-sensor alert systems, this kit matches your skill level.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code on the box to chat with a fine-tuned AI companion that knows this exact circuit. You can also reach a human on WhatsApp for backup – no waiting on forums.
Will the alarm trigger if both PIR sensors detect motion at the same time?
Yes, the code you'll write handles concurrent triggers and displays which zone activated first on the LCD. The buzzer stays on until you reset.
Can I add a GSM module later to get SMS alerts?
Absolutely – the Arduino Mega has plenty of spare I/O pins and the breadboard has room. The AI companion includes notes on expansion ideas.
Is the 9V battery included?
The kit includes a 9V battery snap connector, but you'll need to supply a standard 9V battery (easily available at local electronics shops). The system can also be powered via the Arduino's USB port during programming.
Home Security — PIR, reed switch, smoke and flood sensors all monitored. Colour-coded LCD panel shows all zone states.
What's in this kit
- Arduino Mega 2560
- HC-SR501 PIR x2
- Reed Switch x3
- MQ-2
- Water Sensor
- 16x2 LCD
- I2C Backpack
- Active Buzzer
- 10kΩ Resistors x15
- 220Ω Resistors x5
- 400-pt Breadboard
- M-M Wires x35
- 9V Battery Snap
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items