The A-Star 32U4 Prime SV MicroSD is a programmable module from Pololu that features an Atmel ATmega32U4 microcontroller with built-in USB connectivity, as well as a microSD socket for removable storage. The module is designed to be a smaller, low-cost alternative to the A-Star 32U4 Prime SV, while still retaining the majority of its features.
The A-Star 32U4 Prime SV MicroSD includes two pins for battery power that can be used to power the board without needing a USB connection. It has three power regulation modes that can support a wide range of input voltages, including 5V and 7V supplies. The module is also equipped with two built-in LEDs for user feedback. The Atmega32U4 of the module is programmed using the same open source Arduino libraries and APIs as the A-Star 32U4 Prime SV. The microSD socket is capable of supporting up to 32GB of removable storage, allowing for the storage of large amounts of data on the board.