A-Star 32U4 Micro

Pololu item #: 3101 295 in stock

Price break Unit price (US$)
1 12.75
5 11.25
25 9.95
100 8.95


backorders allowed

The A-Star 32U4 Micro is a tiny programmable module featuring Atmel’s ATmega32U4 microcontroller. It packs a Micro-USB interface and 18 digital input/output pins (of which 7 can be used as PWM outputs and 8 as analog inputs) onto a board measuring only 1″ × 0.6″ and ships preloaded with an Arduino-compatible bootloader.

 Description Specs (12) Pictures (10) Resources (24) FAQs (0) On the blog (10) 

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

A-Star 32U4 Micro schematic diagram (253k pdf)
Printable schematic diagram of the A-Star 32U4 Micro.
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.
A-Star 32U4 Micro pinout diagram (409k pdf)
Printable pinout diagram of the A-Star 32U4 Micro.
A-Star 32U4 Micro dimension diagram (255k pdf)
Detailed dimension diagram of the A-Star 32U4 Micro.
3D model of the A-Star 32U4 Micro (6MB step)
A-Star 32U4 Micro drill guide (38k dxf)
This DXF drawing shows the locations of all of the board’s holes.

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