A-Star 32U4 Prime LV microSD (ac03b)

Pololu item #: 3108
Brand: Pololu
Status: Discontinued 
RoHS 3 compliant

This product has been discontinued.

This original version (ac03b) of the A-Star 32U4 Prime LV has been replaced by a newer version (ac03e) with an improved 5V regulator that can deliver more current and has a wider 2 V to 16 V operating range.

Clearance: This product is being replaced by a newer ac03e version with an improved 5 V regulator that operates from 2 V to 16 V and can deliver more current.

The A-Star 32U4 Prime LV is a programmable board based on the ATmega32U4 AVR microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 2.7 V to 11.8 V. This configuration of the A-Star 32U4 Prime LV includes microSD support and preinstalled female headers common to many Arduinos.

Alternatives available with variations in these parameter(s): version Select variant…

 Description Specs (17) Pictures (9) Resources (24) FAQs (0) On the blog (3) 

Documentation and other information

Pololu A-Star 32U4 User’s Guide (Printable PDF)

User’s manual for the Pololu A-Star 32U4 family of user-programmable boards.


File downloads

Pinout and power distribution diagrams of the A-Star 32U4 Prime (1MB pdf)
Printable pinout and power distribution diagrams of the A-Star 32U4 Prime (applies to both LV and SV versions).
Pololu A-Star 32U4 drivers for Windows (version 1.3.0.0) (7k zip)
This download contains the Windows drivers for the A-Star 32U4 and the rest of our 32U4 family of boards.
Schematic diagram of the A-Star 32U4 Prime LV (ac03b) (686k pdf)
Printable schematic diagram of the A-Star 32U4 Prime LV.
Dimension diagram of the A-Star 32U4 Prime LV (ac03b) (4MB pdf)
3D model of the A-Star 32U4 Prime LV (ac03b) (27MB step)
Drill guide for the A-Star 32U4 Prime LV (ac03b) (197k dxf)
This DXF drawing shows the locations of all of the board’s holes.

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