The OKY2103-3 Module with Shield and Prototyping is designed to be used with the Arduino microcontroller board. It features a 8-bit ATmega microcontroller, a 4-channel analog-to-digital converter, an on-board crystal oscillator, three LEDs, one set of universal input and output pins, four digital I/O pins, four PWM outputs, and one pulse width modulator. It also includes a programming interface and a USB port for connection and power. This module is manufactured by OKYSTAR and is ideal for applications such as robotics, remote sensing, and home automation systems.