Pet Activity Monitor Kit with Arduino Mega + Relay
Advanced Pet Stair Activity Monitor with Arduino Mega, Dual PIR Sensors & 12 Relay-Driven LEDs
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine knowing exactly when your pet goes up or down the stairs, with a glowing trail of LEDs lighting up to follow their path. This advanced Arduino Mega kit mounts two PIR sensors at the top and bottom of any staircase to detect motion direction, then triggers 12 relay-controlled LEDs to illuminate in sequence—ascending or descending—turning a simple home automation idea into an interactive pet activity tracker.
What You'll Build
You'll wire and code a complete staircase monitoring system that tracks movement direction in real time. By the end of the build, you’ll have a functional prototype that can be mounted along any staircase, using isolated relay modules to drive the 12‑LED path and a single 12V adapter for power. The final unit acts as both a pet surveillance tool and a smart home accent light.
What You'll Learn
- Programming interrupt-driven PIR sensor fusion to distinguish upward and downward motion
- Using 5V relay modules to sequentially switch high‑current white LEDs from a microcontroller
- Designing a robust power stage with 1N4007 diodes and 100nF capacitors for transient suppression
- Prototyping on PCB and soldering a multi‑section circuit for reliable field installation
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 |
| M-M Wires | 30 |
| 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 kit is built for engineering students (B.Tech ECE/EEE) working on embedded systems projects for Smart India Hackathon or their final‑year capstone. It also suits advanced makers at innovation labs in IIT, NIT, VIT, or BITS campuses who need a reliable, tested hardware kit for pet activity monitoring without weeks of sourcing. Even hobbyists comfortable with soldering and Arduino will find it a rewarding weekend prototype.
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?
Our AI build companion, accessible via the QR code on the box, provides step-by-step troubleshooting tailored to this exact kit. You can also reach out on WhatsApp for direct assistance from our Bengaluru support team.
Can I extend this to more than 12 steps?
Yes, the Arduino Mega has plenty of I/O. With additional relay modules, LEDs, and minor code modifications, you can scale to 20–30 steps. The AI companion includes guidance on expanding the design.
How does the kit handle pets of different sizes?
The PIR sensors detect infrared radiation from any warm‑bodied animal. Mounting height and sensor placement can be adjusted based on your pet’s size—the AI companion will suggest optimal angles and sensitivity settings.
Is the 12V adapter safe to use around pets?
The adapter supplies low‑voltage DC power. All relay connections isolate the high‑current LED path, and the circuitry is low‑voltage. As with any electronics project, ensure wiring is enclosed and out of your pet’s reach.
Pet Tracking — Two PIR sensors at top and bottom of stairs trigger 12 step LEDs to light sequentially in the direction of travel.
What's in this kit
- Arduino Mega 2560
- HC-SR501 PIR x2
- 5V Relay Module x12
- 5mm White LED x12
- 1N4007 Diode x12
- 220Ω Resistors x12
- 10kΩ Resistors x5
- 100nF Caps x10
- PCB Prototype Board x2
- M-M Wires x30
- 12V Adapter
- Soldering Iron
- Solder Wire
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.
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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