The A-Star 32U4 Mini LV is a programmable microcontroller board from Pololu. It is a compact, low-voltage solution with an Atmel ATmega32U4 microcontroller. This board supports multiple communication methods, including I²C, Serial, and USB, and features a built-in USB connector for programming and other interactive tasks. It has 24 I/O pins, a 12-pin extension header for plugging in a variety of additional components and peripherals, and can accept up to voltages from 3.7V to 15V. The A-Star 32U4 Mini LV is ideal for high-speed, low-power applications, such as robotics, automation, or portable devices.