11 open source boards using the ATMEGA32U4-A
Real designs built with the ATMEGA32U4-A, 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/ArduinoPower Supply (plus UBBB 32u4 rev 1.2)
thebiguno
99.1 × 99.1 mm189 parts2LNo license75
AVR/ArduinoMacropad
vlee6
58.5 × 80.9 mm52 parts2LNo license2
AVR/ArduinoMithril panneled
sanfeps
132.8 × 138.8 mm216 parts4LNo license1
AVR/ArduinoSdraKb00
drabaioli
176.2 × 83.4 mm85 parts2LMIT1
AVR/ArduinoPika-Board-Files
FrenzyExists
85.7 × 118.3 mm55 parts2LNo license0
AVR/ArduinoAdjustable Modular Power Supply
36.8 × 52.7 mm183 parts2LNo license75
AVR/ArduinoMithril
269.8 × 158.8 mm211 parts4LNo license1
ESP32Ball V4 32u4
Gamu2124
100.2 × 102.7 mm97 parts2LNo license1
AVR/ArduinoUBBB 32u4
20.3 × 41.9 mm34 parts2LNo license75
AVR/ArduinoPanelizing
41.9 × 20.3 mm33 parts2LNo license75
AVR/ArduinoMicrosd append
49.4 × 34.2 mm32 parts2LNo license75
The ATMEGA32U4-A in open source designs
The gallery holds 11 open source boards using the ATMEGA32U4-A from 6 GitHub repositories; a typical one measures about 85.7 × 83.4 mm and carries around 85 components.
82% are two-layer designs, the rest use four layers or more, and 9% carry an open source license.
The most starred is Power Supply (plus UBBB 32u4 rev 1.2) by thebiguno.
Parts used alongside the ATMEGA32U4-A
Microcontrollers on boards using the ATMEGA32U4-A
What boards using the ATMEGA32U4-A are built for
ATMEGA32U4-A: common questions
Where can I find a ATMEGA32U4-A reference design?
Each of the 11 boards on this page is a real design using the ATMEGA32U4-A. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
Which microcontrollers do boards using the ATMEGA32U4-A use?
Most are built on AVR/Arduino (10) and ESP32 (1).
How big is a typical board using the ATMEGA32U4-A?
The median is 85.7 × 83.4 mm, and 82% are two-layer designs.
What is the most popular open source board using the ATMEGA32U4-A?
By GitHub stars, Power Supply (plus UBBB 32u4 rev 1.2) by thebiguno, with 75 stars.
Can I simulate one of these boards using the ATMEGA32U4-A 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.