Arduino-Powered Curtain Automation: Sense Sunrise & Sunset with BH1750 Kit
Arduino-Powered Curtain Automation: Sense Sunrise & Sunset with BH1750
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 waking up to natural light as your curtains glide open automatically at sunrise and close by themselves at dusk. This kit lets you build a full-fledged motorised curtain controller that senses ambient brightness using a BH1750 lux sensor and follows a DS3231 RTC schedule, adding genuine convenience to any room with a repetitive daily task.
What You'll Build
You'll assemble a controller that drives a NEMA 17 stepper motor to open and close standard curtain rails. The system reads real-time light levels and time, triggering movement precisely at the light thresholds you set. An OLED display gives you live status, and tactile buttons allow manual override whenever you want-perfect for movie nights or afternoon naps.
What You'll Learn
- Interfacing the BH1750 I2C light sensor and mapping lux values to curtain positions
- Using a DS3231 RTC module to create time-based automation schedules
- Controlling a NEMA 17 stepper motor with an A4988 driver for smooth, accurate movement
- Integrating a 0.96-inch OLED display to show ambient light, current time, and curtain status in real time
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| BH1750 Lux Sensor | 1 |
| DS3231 RTC | 1 |
| NEMA 17 Stepper | 1 |
| A4988 Driver | 1 |
| 0.96in OLED | 1 |
| Tactile Button | 2 |
| 100nF Caps | 5 |
| 10k? Resistors | 5 |
| 12V 1A Power Supply | 1 |
| M-M Wires | 25 |
| M-F Wires | 15 |
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
Ideal for CBSE Class 11-12 students building physics or electronics projects, and first-year B.Tech ECE/EEE learners working on home automation mini-projects. It's also a strong foundation for Smart India Hackathon prototypes and ATL Tinkering Lab innovators who want a reliable, sensor-driven automation demonstration.
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, reachable through the QR code or WhatsApp, is trained on this specific project and can guide you past any wiring or code issue in minutes.
Does the kit include a curtain rail or fabric?
No, you supply the standard curtain rail; the controller drives it via the stepper motor. We provide a 3D-printable bracket design and mounting instructions to attach the motor securely.
Can I set custom open/close times beyond sunrise and sunset?
Yes. The DS3231 RTC and push buttons let you program multiple fixed-time schedules, so you can open at 07:00 and close at 22:00 regardless of light levels, or blend both modes.
Does this support smartphone control out of the box?
The baseline kit is autonomous. However, the Arduino Uno can be extended with a Bluetooth or Wi-Fi module-the companion guide includes notes on adding remote control for those ready to expand it.
BH1750 lux sensor automatically opens curtains at sunrise and closes at sunset using a stepper motor and RTC schedule.
What's in this kit
- Arduino Uno R3
- BH1750 Lux Sensor
- DS3231 RTC
- NEMA 17 Stepper
- A4988 Driver
- 0.96in OLED
- Tactile Button x2
- 100nF Caps x5
- 10k? Resistors x5
- 12V 1A Power Supply
- M-M Wires x25
- M-F Wires x15
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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