Office Occupancy Tracker Kit with Arduino Mega + Relay
Arduino Mega Office Occupancy Tracker: Build a 12-Step LED Direction Counter
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Track and visually display office footfall direction – this kit lets you assemble a working occupancy tracker that triggers 12 LED-equipped relays in sequence as someone enters or exits, using dual PIR sensors and an Arduino Mega. Perfect for smart office automation, people counting, or final-year engineering projects that need a tangible, real-world demo.
What You'll Build
A functional prototype that detects entry and exit direction through a doorway and lights up 12 LEDs in a sweeping pattern toward the detected side. The relays can be wired to actual lighting or indicator panels, making this an ideal foundation for occupancy-based energy-saving systems in offices, labs, or co-working spaces.
What You'll Learn
- Multi-relay sequencing logic with Arduino Mega digital I/O and precise timing
- Directional motion sensing using two HC-SR501 PIR sensors placed at top and bottom
- Soldering and PCB prototyping for a 12-relay indicator board on dual prototype boards
- Integrating diodes and capacitors for relay coil suppression and noise filtering
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| HC-SR501 PIR | 2 |
| 5V Relay Module | 12 |
| 5mm White LED | 12 |
| 1N4007 Diode | 12 |
| 220Ω Resistors | 12 |
| 10kΩ Resistors | 5 |
| 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
This advanced soldering and logic project is designed for B.Tech ECE and EEE students building semester or final-year prototypes, as well as Smart India Hackathon participants tackling smart building automation. Makers working on ATL Tinkering Lab extensions or IIT/NIT/VIT innovation challenges will find the directional sensing and multi-relay control directly applicable.
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 access the AI companion trained on this project — it offers step-by-step troubleshooting. You can also reach us on WhatsApp for direct human support.
Can I replace the LEDs with actual room lights?
Yes, the relays can handle loads up to 10A, making it possible to switch mains-powered lights. Ensure any high-voltage wiring is handled by a qualified person.
How does the system detect direction with only two PIR sensors?
By comparing trigger times from the top and bottom sensors; if the top sensor activates first, entry is inferred, and vice versa. The Arduino Mega then sequences the LEDs accordingly.
Do I need additional tools beyond what's in the kit?
The kit includes a soldering iron and solder. You'll need safety glasses, a well-ventilated area, and optionally a multimeter for debugging.
Office — PIR at top and bottom trigger 12 step LED relays sequentially in the detected travel direction.
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.
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