Home Security Motion Sensor Kit v3
Build a Professional Home Security System with Arduino Mega – Motion Sensor Alarm, RTC Auto-Arm, and Keypad Disarm
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Design a fully functional, schedule-based security alarm system you can deploy in a home, lab, or workshop. Three independent PIR motion sensor zones work with a DS3231 real-time clock to auto-arm at preset times, trigger a loud buzzer and relay-connected siren on intrusion, and disarm only when the correct 4-digit code is entered on the keypad. The result is a wall-mountable control unit that mirrors the logic of commercial residential alarm panels.
What You'll Build
A multi-zone motion-activated security system with a 0.96-inch OLED dashboard displaying armed status, zone triggers, and disarm attempts. The kit includes an Arduino Mega 2560, three HC-SR501 sensors, a DS3231 RTC, 4x4 keypad, relay module, buzzer, and all necessary passives. Once assembled, you’ll have a standalone security device that can cut power to a siren, lock door strikes, or send auxiliary alerts.
What You'll Learn
- Interfacing multiple PIR motion sensors and de-bouncing their digital outputs for reliable zone detection.
- Programming the DS3231 real-time clock module to implement auto-arm and auto-disarm schedules.
- Implementing secure keypad passcode logic with disarm sequence, entry delay, and tamper timeout.
- Driving a 0.96-inch OLED display to render system status, event logs, and real-time clock data.
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| HC-SR501 PIR | 3 |
| DS3231 RTC | 1 |
| 4x4 Keypad | 1 |
| Active Buzzer | 1 |
| 5V Relay Module | 1 |
| 0.96in OLED | 1 |
| 1N4007 Diode | 5 |
| 10kΩ Resistors | 10 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 12V Adapter | 1 |
| Soldering Iron | 1 |
| Solder Wire | 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
Ideal for B.Tech ECE/EEE students prototyping a final-year embedded security project or competing in Smart India Hackathon hardware challenges. It also serves researchers at NIT and BITS Pilani working on IoT-enabled surveillance prototypes, and advanced hobbyists preparing for campus tech expos or ATL Tinkering Lab mentors guiding senior-level automation builds.
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 in the box to access the AI companion trained on this exact project; if you prefer human help, WhatsApp our support team for troubleshooting guidance.
Can I add more PIR sensors or connect a GSM module?
The Arduino Mega has ample digital I/O pins; you can expand the sensor count and integrate a SIM800L module for SMS alerts by following the extensibility notes in the companion guide.
Does the system include battery backup for power outages?
The kit includes a 12V adapter; you can add a 12V 7Ah lead-acid battery and a charge controller using the relay and diode network for uninterruptible operation.
Will the code work with my campus WiFi for remote monitoring?
This kit focuses on standalone security; to add IoT connectivity, you can later attach an ESP8266 and modify the code to push notifications via the AI companion’s extension module.
Home Security — Security system auto-arms via RTC schedule. PIR zones trigger alarm. Code disarms via keypad.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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