4 open source boards using the ATMEGA32U4-AUR
Real designs built with the ATMEGA32U4-AUR, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
AVR/ArduinoBzzt Keyboard Controller Board
SteveCooling
166 × 70 mm71 parts2LMIT8
AVR/ArduinoBeetje 32U4 Blok
aspro648
68.6 × 53.3 mm33 parts2LNo license8
AVR/ArduinoBalthazar-Keyboard-3
balthazar-space
290.6 × 127 mm182 parts4LCERN-OHL-S-2.02
AVR/ArduinoBeetje 32U4 Blok
68.6 × 53.3 mm6 parts2LNo license8
The ATMEGA32U4-AUR in open source designs
The gallery holds 4 open source boards using the ATMEGA32U4-AUR from 3 GitHub repositories; a typical one measures about 117.3 × 61.7 mm and carries around 52 components.
75% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is Bzzt Keyboard Controller Board by SteveCooling.
Parts used alongside the ATMEGA32U4-AUR
Microcontrollers on boards using the ATMEGA32U4-AUR
What boards using the ATMEGA32U4-AUR are built for
ATMEGA32U4-AUR: common questions
Where can I find a ATMEGA32U4-AUR reference design?
Each of the 4 boards on this page is a real design using the ATMEGA32U4-AUR. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the ATMEGA32U4-AUR?
The LMV358IDGKR, LP2985-33DBVRG4 and NCP1117ST50T3G appear in the most repositories here.
Which microcontrollers do boards using the ATMEGA32U4-AUR use?
Most are built on AVR/Arduino (4).
How big is a typical board using the ATMEGA32U4-AUR?
The median is 117.3 × 61.7 mm, and 75% are two-layer designs.
What is the most popular open source board using the ATMEGA32U4-AUR?
By GitHub stars, Bzzt Keyboard Controller Board by SteveCooling, with 8 stars.
Can I simulate one of these boards using the ATMEGA32U4-AUR before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.