Buce - 6-Channel LED PWM Controller

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Introduction

Buce (Model BLC06) is an open-source, 6‑channel WiFi LED PWM controller for makers and engineers.

Buce can be controlled via the BorneoIoT mobile app (iOS & Android) for real‑time channel control, presets & scenes, scheduling, OTA firmware updates, and Wi‑Fi setup/device discovery.

It is optimized for aquarium lighting but fits many LED projects. Connect a constant-current LED driver and high-power LEDs — Buce handles the control and scheduling.

Features

All-in-One Controller
Integrates WiFi/Bluetooth, LED PWM output, temperature/current/voltage monitoring, fan drive, buttons, indicator lights, and a built-in 36V voltage converter for comprehensive control.
State of The Art Hardware
On a coin-sized footprint, maximizes the potential of the ESP32-C3 microcontroller, providing 6 hardware dimming channels, achieving 4096-level smooth dimming, and supporting up to 19kHz phase-shifted PWM output.
Feature-Rich
Supports all commercial-grade lighting functions including multi-stage programmable dimming, location-based solar simulation, and soft start for professional applications.
Safety
Equipped with over-temperature and over-power protection, along with PID adaptive cooling fan control to ensure reliable and safe operation.
DIY Friendly
Features a 0.1" pin-header interface for easy DIY projects and customization, requiring minimal peripheral circuits. Directly connect LED driver circuits and main power supply to create intelligent high-power LED lights.
Open-Source
Buce is fully open-source hardware, certified by OSHWA, with open-source Python API, examples, and documentation available for easy integration and customization.

Quick specs

Channels: 6 independent PWM
Dimming levels: 4096
PWM freq: up to 19 kHz (configurable)
Input voltage: 5–36 V
Size: 22 × 30 mm
Thermal shutdown: >65 °C (configurable)
Interfaces: 0.1" pin header, optional INA139, external button

Fully Open Source Hardware

Buce is an OSHWA certificated open-hardware product.

Applications

Aquarium Lighting Aquarium hobbyists can use Buce to simulate natural lighting environments, promoting the health and growth of aquatic plants or corals.
Photography Lighting Photographers can set up dynamic lighting scenes to capture stunning images with precise control over brightness and color, perfect for studio or outdoor shoots.
Home Lighting DIY enthusiasts can integrate Buce into their smart home systems to create personalized lighting ambiances for different rooms and occasions, with smooth transitions throughout the day.
And More Let your creativity shine.

Dimming
Integration and Thermal Management
Other Features

Dimming

Multi-stage programmable dimming with scheduling, manual, and temporary modes.
Supports linear, logarithmic, gamma, exponential and CIE‑1931 curves.
4096 levels, soft start/shutdown, phase shifting to reduce peak driver current.
Solar simulation using astronomical algorithms.
High-frequency PWM (up to 19 kHz) and phase shifting minimize flicker and noise.

Supported Brightness Correction Curves

Integration and Thermal Management

Built-in voltage regulator and power measurement; optional INA139 for current/power.
3.3 V output for peripherals.
Fan driver (2‑wire and PWM fans) + PID control (default target 45 °C).
NTC input for temperature; emergency shutdown >65 °C.

Other Features

Automatic SNTP time synchronization.
0.1" (2.54mm) pin-header interface, convenient for DIY projects.
Communicating using CBOR over CoAP/UDP offers both reliability and high performance
Provides Open-source Python API and examples.