Home Security Motion Sensor Kit with Arduino Mega + Servos
Build a Motion-Activated Nerf Turret with Arduino Uno & Servos
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 a sentry that watches over your room, spots an intruder, and fires a harmless Nerf dart with pinpoint precision. This kit lets you build exactly that — a pan-tilt servo turret with a PIR motion sensor and flywheel launcher, all orchestrated by an Arduino Uno. It’s a hands-on introduction to real-world security automation that’s safe, engaging, and immensely satisfying to complete.
What You'll Build
You’ll assemble a two-axis servo turret that scans the area, a PIR sensor that triggers when someone enters, and a flywheel-driven Nerf shooter that aims using IR-based detection. The result is a fully functional home security demo that reacts to motion and fires a soft foam dart — perfect for school projects, hackathons, or a weekend engineering challenge.
What You'll Learn
- Wiring and coding a HC-SR501 PIR motion sensor with Arduino Uno
- Controlling two SG90 servos for smooth pan-tilt movement
- Driving a DC motor with an L298N driver to create a flywheel launcher
- Integrating multiple subsystems into a cohesive, event-driven security automation project
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| HC-SR501 PIR | 1 |
| SG90 Servo | 2 |
| L298N Driver | 1 |
| DC Motor | 1 |
| Pan-Tilt Bracket | 1 |
| 1N4007 Diode | 5 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 5 |
| 830-pt Breadboard | 1 |
| M-M Wires | 25 |
| 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
This kit is ideal for CBSE Class 11-12 students working on physics or computer science practicals, B.Tech ECE/EEE first-yearers prototyping for Smart India Hackathon, and ATL Tinkering Lab mentors who need a ready-to-assemble security demo. It’s also a compelling build for hobbyists wanting a Nerf turret that actually tracks and fires.
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, which gives step-by-step guidance tailored to this kit. You can also message us on WhatsApp for direct troubleshooting help.
Does this kit include Nerf darts and a flywheel launcher?
The kit includes a DC motor and L298N driver to build your own flywheel mechanism. Soft foam darts are not included for safety, but any standard Nerf dart fits perfectly into the launcher you create.
Can I use an Arduino Mega instead of the included Uno?
This kit is built around the Arduino Uno R3, but the code is fully compatible with Arduino Mega if you want more I/O later. The pan-tilt design works best with two servos, which Uno handles easily.
How sensitive is the PIR sensor for a real home security demo?
The HC-SR501 detects motion up to 7 meters with a wide angle. It’s ideal for room-scale demos — you’ll see the turret react the moment someone walks into the detection zone.
Home Security — PIR detects intruder. Two servo pan-tilt points flywheel motor Nerf shooter at target. Safe IR aiming.
What's in this kit
- Arduino Uno R3
- HC-SR501 PIR
- SG90 Servo x2
- L298N Driver
- DC Motor
- Pan-Tilt Bracket
- 1N4007 Diode x5
- 10kΩ Resistors x5
- 100nF Caps x5
- 830-pt Breadboard
- M-M Wires x25
- 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