DFRobot UNIHIKER M10/K10 Multi-Function Expansion Board

This expansion board directly resolves the issue of insufficient I/O pins on the UNIHIKER development board. It adds a multitude of multifunctional pins, including six ports for digital, analog, or single-bus devices, and a dedicated interface for ultrasonic sensors. Critically, the board retains the native gold finger interface of the mainboard, ensuring existing connections remain accessible. Furthermore, the board integrates onboard components such as two programmable RGB LEDs and an infrared transmitter/receiver, adding immediate functionality for status indication and remote control without requiring external modules.

Designed for true project mobility, the I/O expansion board eliminates the need for cumbersome external battery packs and tethered power cables. It features an integrated 18650 battery holder with a complete charging and discharging management circuit. An onboard battery level indicator provides a clear visual cue of the power status for safe operation. For the high-performance UNIHIKER M10, a specially designed USB Type-C^® to HY2.0-4P power cable is included, ensuring a stable and reliable power supply for demanding applications.

To handle complex robotics and automation tasks, the I/O expansion board is equipped with a powerful drive system. It incorporates a four-channel DC motor driver and six servo interfaces. The servo power supply is independent, drawing directly from the battery to ensure that high-torque movements do not compromise the main controller's stability. Additionally, a dedicated 5V I²C interface is included to reliably power high-current peripherals, such as the HUSKYLENS AI vision sensor, which typical 3.3V logic boards cannot support alone.

Every aspect of the board is designed for practicality and durability. The M3 mounting hole spacing on the base is compatible with LEGO brick dimensions, allowing for seamless integration into mechanical structures. A full suite of status indicator lights for system power, charging, and motor direction provides immediate visual feedback for easy debugging. For protection, an acrylic baseplate prevents accidental short circuits, while all I/O pins are equipped with electrostatic protection, enhancing safety during handling and use.