Function: Expands Arduino’s I/O capabilities for easy connection of sensors, servos, relays, and modules.

Compatibility: Designed for Arduino Uno, Mega, Leonardo, and other compatible boards.

Pinout Access: Breaks out all Arduino digital and analog I/O pins with:

3-pin headers (Signal, VCC, GND) for each pin

Plug-and-play support for standard 3-pin sensor cables

Power Support: Includes separate servo power rail with jumper to switch between external and onboard power.

Communication Ports:

I2C interface (SDA, SCL)

UART serial interface (TX, RX)

Bluetooth module interface

APC220 wireless interface

SD card module interface

Onboard Reset Button: Provides easy access to reset the connected Arduino board.

Build Quality: High-quality PCB with clear pin labels and durable connectors.