This is a 7-channel COB LED driver board designed for Seeed Studio XIAO. This expansion board breaks XIAO Develoment Board GPIO power limits, offering 7 output channels, specifically tailored for driving low-power, ultra-narrow 1mm 3V COB LED strips. With integrated PMIC battery management, it is the ideal plug-and-play solution for building compact, high-brightness wireless lighting setups.

Features:

Adapted for 1mm-wide 3V COB LED Strips: The onboard hardware current limiting is specifically tuned to match the electrical characteristics of 3V 1mm flexible COB strips. The tiered 300mA and 80mA current limits effectively drive strips of various lengths, providing Makers with a safe, stable, and plug-and-play experience.

Strategic 7-Channel Hybrid Output: Efficiently manages your entire lighting setup with a single board. It features 3 High-Power Channels (300mA) for bright main lighting and 4 Dimmable Channels (80mA) for delicate breathing or fading effects. One board handles it all—keeping your main lights bright and your effects dynamic.
Battery Management for Wireless Projects: Integrated power circuit supports 3.7V Li-Po batteries or high-power 5V USB adapters. Perfect for building both wireless installations and high-brightness desktop ambient lighting.
Easy Sensor Expansion: Includes a standard Grove I2C connector for hassle-free connection to sensors , allowing your lighting projects to react intelligently to the environment.

Specifications:

Parameter Specification

Supported LED models : Single Ended COB LED Strip - White(6500K) 110mm（5PCS）

Operating Current:<200mA(Recommended)

Single Ended COB LED Strip - White(6500K) 300mm（5PCS）

Operating Current:<100mA(Recommended)

Double Ended COB LED Strip - White(6500K) 38mm（10PCS）

Operating Current:<100mA(Recommended)

Double Ended COB LED Strip - White(6500K) 130mm（5PCS）

Operating Current:<300mA(Recommended)

Double Ended COB LED Strip - White(6500K) 300mm（5PCS）

Operating Current:<300mA(Recommended)

COB LED Power Support : DC 3V
Power Input 5V/1A USB (via XIAO)

Note: A 5V/2A+ wall adapter is recommended for full-load operation.

3.7V Li-Po Battery (via onboard Battery Port)

3x High-Power Ports : 3 Channels Output

(Screw Terminals) Drive Capability: Max 300mA/channel

Control Logic: 1x Always-On + 2x GPIO Switch（D0,D1）

Note: On/Off Switch Only, NO PWM Support

4x Low-Power Ports : 4 Channels Output

(Bottom Pads) Drive Capability: Max 80mA/channel

Control Logic: Fully Dimmable (PWM) via D2, D3, D8, D9

Note: Active LOW logic

Onboard : Grove I²C Connector x1

Power Switch x1

Power LED x1

Battery Connector x1

Supported XIAO : XIAO RP2040、XIAO RP2350、XIAO nRF52840、XIAO ESP32-C3/C6/S3、XIAO RA4M1、XIAO MG24
Dimensions 30mm*41mm*16mm(With a Seeed Studio XIAO)

Hardware Overview: