Motion Activated Fan Kit with Arduino Uno + Relay
Automate Your Fan with Arduino Uno & Relay – Motion Activated Fan Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Turn any ordinary fan into a smart appliance that responds to your presence. This kit equips you to wire an HC-SR501 PIR motion sensor to an Arduino Uno and use a 5V relay to switch a ceiling or table fan on the moment someone enters the room and off after they leave—no timers, no remote, completely hands‑free. It removes the hassle of forgetting to turn off fans and cuts electricity waste in homes, classrooms, and small offices across India.
What You'll Build
A self‑contained motion‑activated fan controller that you can mount on a wall. The system detects occupancy via the PIR sensor, toggling the relay to power on a 230V fan. After five minutes without movement, it automatically shuts the fan off. You can later extend this logic to control lights, alarms, or any AC appliance.
What You'll Learn
- Interface a PIR motion sensor with Arduino and read stable digital triggers
- Use a 5V relay module safely to control a mains‑powered fan circuit
- Program timing logic with millis() to create a 5‑minute auto‑off feature in Arduino IDE
- Build robust breadboard circuits with diodes and resistors for noise protection
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| HC-SR501 PIR | 1 |
| 5V Relay Module | 1 |
| 1N4007 Diode | 5 |
| 10kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 12V Adapter | 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
Perfect for CBSE Class 11–12 students building practical projects for board exams or ATL tinkering labs. B.Tech ECE and EEE freshers from VIT, SRM, or NITs can use it as their first home automation mini‑project. It’s also ideal for teams preparing Smart India Hackathon prototypes or science fair demos that demonstrate real‑world energy saving.
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 open our AI companion that checks your wiring and code in real time. If you still hit a snag, message us on WhatsApp—we reply within hours to get you back on track.
Is it safe to connect this to my ceiling fan?
The 5V relay module completely isolates the low‑voltage Arduino circuit from the 230V mains. However, we recommend adult supervision and testing first with a small DC load to verify switching before connecting any AC appliance.
Do I need prior Arduino programming experience?
Not mandatory. The kit includes commented sample code, and the AI companion explains each line step by step. Even if you’ve never coded before, you can upload the sketch and learn along the way.
Can I change the 5‑minute auto‑off time?
Absolutely. The code uses a single variable for the delay. Open the Arduino IDE, change that number, and re‑upload to set any timeout you prefer—30 seconds, 10 minutes, or an hour.
PIR detects occupancy and switches fan relay on. Auto-off after 5 min of no motion.
What's in this kit
- Arduino Uno R3
- HC-SR501 PIR
- 5V Relay Module
- 1N4007 Diode x5
- 10kΩ Resistors x5
- 400-pt Breadboard
- M-M Wires x20
- 12V Adapter
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