Arduino Home Automation Kit: Temperature & Motion Fan Control
Arduino Home Automation Kit: Temperature & Motion Fan Control
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform a standard ceiling fan into an intelligent climate-responsive device. This kit lets you build a full system that reads room temperature via a DS18B20 probe and detects occupancy using an HC-SR501 PIR sensor, then automatically adjusts fan speed through a TRIAC PWM dimmer. You'll create a real home automation solution that saves energy without compromising comfort.
What You'll Build
You'll assemble a complete fan controller with a 0.96-inch OLED display that shows live temperature, motion status, and current fan speed. A DS3231 real-time clock enables scheduled operation-so the fan can follow a routine or log temperature-motion patterns. The BT136 TRIAC circuit, driven safely through an MOC3021 optocoupler, gives smooth phase control of any AC fan, exactly as commercial smart fan regulators do.
What You'll Learn
- Interfacing DS18B20 digital temperature sensor over OneWire and converting values to user-friendly Celsius output
- Triggering logic from HC-SR501 PIR motion detection to decide fan on/off states
- Programming TRIAC phase-angle control via MOC3021 optocoupler for isolated, safe AC dimming
- Integrating DS3231 RTC, OLED display, and PID-like logic for adaptive fan speed response
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| DS18B20 Probe | x1 |
| HC-SR501 PIR | x1 |
| BT136 TRIAC | x1 |
| MOC3021 Optocoupler | x1 |
| DS3231 RTC | x1 |
| 0.96in OLED | x1 |
| 10k? Resistors | x10 |
| 220? Resistors | x5 |
| 100nF Caps | x10 |
| PCB Prototype Board | x2 |
| 12V Adapter | x1 |
| Soldering Iron | x1 |
| Solder Wire | x1 |
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
Designed for B.Tech ECE/EEE undergraduates, Smart India Hackathon participants, and engineering project teams at IIT/NIT/VIT/BITS. If you have built basic Arduino circuits and now want to control real AC loads safely, this advanced kit bridges the gap between prototype and practical product.
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 inside the box to open the AI companion, which knows every wire and line of code for this exact project. You can also message us on WhatsApp for personalized troubleshooting from our support team in Bengaluru.
Do I need a separate soldering iron or external power supply?
No, the kit includes a soldering iron, solder wire, and a 12V adapter to power the Arduino and the fan control circuit. You just need a ceiling fan and standard tools to strip AC wires.
Can I control any standard ceiling fan with this circuit?
Yes, the BT136 TRIAC handles up to 4A and is designed for inductive loads like ceiling fans up to approximately 100W. The MOC3021 provides optical isolation, making it safe for 230V AC Indian mains.
Do I need prior programming experience for this kit?
The AI companion provides the fully commented Arduino sketch and explains every function. Familiarity with Arduino IDE and basic C++ will help you modify threshold temperatures or add features, but is not mandatory to get the fan running.
Home Security - DS18B20 room temperature + occupancy PIR together set fan speed optimally via TRIAC PWM dimmer.
What's in this kit
- Arduino Uno R3
- DS18B20 Probe
- HC-SR501 PIR
- BT136 TRIAC
- MOC3021 Optocoupler
- DS3231 RTC
- 0.96in OLED
- 10k? Resistors x10
- 220? Resistors x5
- 100nF Caps x10
- PCB Prototype Board x2
- 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.
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