Pololu A-Star 32U4 Prime LV Microcontroller

The A-Star 32U4 Prime LV Microcontroller is a general-purpose programmable board based on the ATmega32U4 AVR microcontroller from Microchip (formerly Atmel) and arranged in the common Arduino form factor exemplified by the Uno R3 and Leonardo. A-Star 32U4 Prime LV Microcontroller; Offers convenient 0.1″-spaced power, ground, and signal connection points; Has buzzer option for simple sounds and music; Supports use of microSD; Provides HD44780-based character LCD option; Comes with 3 user-controllable LEDs