Adaptive Circadian Lighting System Kit with ESP32 + LED
Build a Sunrise-to-Sunset Adaptive Circadian Light with ESP32 and Dual 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 waking up to a gently brightening warm glow that gradually shifts to cool daylight, then back to warm amber as evening falls — all automatically, without a single button press. This kit lets you build a sophisticated ESP32-driven system that mimics natural daylight patterns, supporting your body’s circadian rhythm for better sleep and focus. The hardware mixes two 12V LED strips (warm and cool) with high-frequency PWM control, calibrated by ambient light sensing and an atomic-clock RTC.
What You’ll Build
A wall‑powered, real‑time clock‑synchronised light system that reads local time from the DS3231 RTC and ambient lux from the BH1750 sensor to blend warm‑white and cool‑white LED strips. The 0.96‑inch OLED displays the current colour temperature and adaptive brightness mode, and the IRF540N MOSFETs handle the 12V drive. The result is a biophilic light source that follows the sun’s daily arc — from 2000K at dawn to 6500K at noon and back.
What You’ll Learn
- Calibrating PWM to achieve perceptually smooth colour temperature transitions between warm and cool LEDs
- Interfacing I2C sensors (BH1750, OLED) and real-time clock with ESP32 in a multi‑device bus architecture
- Designing MOSFET gate-drive circuits with gate resistors and 100nF bypass capacitors for 12V LED strips
- Implementing sunrise‑sunset algorithms in Arduino/C++ using time‑based colour mixing and lux compensation
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| DS3231 RTC | 1 |
| IRF540N MOSFET | 3 |
| BH1750 | 1 |
| 0.96in OLED | 1 |
| LM2596 Buck Converter | 1 |
| 100Ω Gate Resistors | 5 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 12V LED Strip Warm | 1 |
| 12V LED Strip Cool | 1 |
| 12V 3A PSU | 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 advanced kit is designed for B.Tech ECE/EEE students building a portfolio IoT project, Smart India Hackathon participants prototyping health‑tech lighting, and learners at IIT/NIT/VIT/BITS who want to demonstrate circadian automation. It also suits CBSE Class 11‑12 ATL Tinkering Lab members with prior ESP32 experience.
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 to open the AI companion. It walks you through assembly, code upload, and calibration. For human support, WhatsApp our team — we typically reply the same day.
Can I use this kit for my final‑year engineering project?
Yes. The circadian lighting system is a recognised IoT health application. You can extend the code with MQTT or WiFi control, and the build documentation is ready for your project report.
Do I need prior soldering and ESP32 experience?
Basic soldering skills are required to assemble the PCB and header pins. The AI companion shows every joint. Familiarity with the Arduino IDE helps, but firmware examples are provided.
Does this kit help learn advanced colour mixing algorithms?
Absolutely. The code implements a perceptually uniform colour temperature model using real‑time clock data and ambient lux feedback, teaching you how to map sunrise‑sunset curves to PWM channels.
ESP32 adjusts LED colour temperature from warm sunrise to cool midday to warm sunset continuously.
What's in this kit
- ESP32 Dev Board
- DS3231 RTC
- IRF540N MOSFET x3
- BH1750
- 0.96in OLED
- LM2596 Buck Converter
- 100Ω Gate Resistors x5
- 10kΩ Resistors x5
- 100nF Caps x10
- PCB Prototype Board x2
- 12V LED Strip Warm
- 12V LED Strip Cool
- 12V 3A PSU
- 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