Microcontrollers like the Seeed Studio XIAO are perfect for compact projects, but their standard GPIO pins simply can't safely output the current required for high-brightness lighting. If you try to wire multiple LEDs directly to the board, you risk overloading and burning out your MCU.
That’s where this COB LED Driver Expansion Board comes in.
Designed to stack perfectly under your XIAO, this board acts as a high-powered middleman. It takes the logic signals from your microcontroller and uses them to safely drive up to seven independent 3V LED channels.
It gives you exactly the control you need:
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Three High-Power Switch Ports (300mA per channel): Built for solid, ultra-bright illumination.
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Four PWM-Capable Ports (80mA per channel): Designed for creating smooth fading, breathing, and custom dimming effects.
To make wireless builds incredibly easy, it also features an integrated PMIC (Power Management IC). This allows you to connect a rechargeable battery directly to the board to power both the LEDs and your XIAO, while safely handling the charging process—all in one tiny, plug-and-play package.
Overview
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Custom-fit expansion board for the Seeed Studio XIAO ecosystem
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7 independent output channels (3× high-current switch, 4× PWM dimming)
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Integrated battery management (PMIC) for charging and safe power delivery
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Specifically tailored for 3V COB LED strips (especially ultra-narrow 1 mm strips)
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Ultra-compact footprint matching the XIAO form factor
Why You’ll Like It
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Protects your board: Breaks the XIAO’s GPIO power limits so your microcontroller stays safe while your LEDs run bright.
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No messy wiring: It stacks cleanly with your XIAO, keeping your project footprint tiny and professional.
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Advanced lighting effects: The dedicated PWM channels make it easy to program realistic breathing or pulsing effects without complex external circuitry.
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All-in-one power: With built-in battery management, you don’t need a separate charging module for wireless or wearable lighting builds.
Technical Specifications
| Parameter |
Details |
| Compatibility |
All Seeed Studio XIAO boards (RP2040, ESP32-C3/S3, nRF52840, etc.) |
| Output Channels |
7 Total (3× High-Power Switch, 4× PWM Breathing) |
| Max Current (Switch Ports) |
300 mA per channel |
| Max Current (PWM Ports) |
80 mA per channel |
| Operating Voltage |
Designed for 3V COB LEDs |
| Power Management |
Integrated PMIC for battery charging & delivery |
| Footprint |
XIAO Standard Size |
Perfect For
- Custom projects, diorama, and model kit lighting
- 3D printed model decoration and wearable tech
- DIY ambient lighting and electronic crafts
- Wireless, battery-powered lighting nodes
At K & A Electronics, we love components that solve real build problems. If you're building compact illuminated projects, this driver board takes the hassle out of power management and LED control so you can focus on the build.
Order today with fast Australia-wide shipping and local support from our Sydney team.
