14 open source boards using the ATMEGA328
Real designs built with the ATMEGA328, 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/ArduinoATMEGA328-Motor-Board
AntonioMR
77 × 100 mm171 parts2LNo license39
AVR/ArduinoNoahFC
zosko
32 × 42 mm41 parts2LGPL-3.011
AVR/ArduinoPcb-RCD-SCM-clocker
4ms
39.6 × 110.9 mm84 partsNo license9
AVR/ArduinoGelatino board
bru4bas
69 × 53.8 mm69 parts2LGPL-2.08- schematic only · 16 partsAVR/Arduino
MCP
unmateria
16 partsCustom license3 
AVR/ArduinoRedBoard Edge
sparkfun
101.6 × 38.1 mm48 parts2LMIT1
AVR/Arduino13852-Redboard.Edge panel.v10
101.6 × 38.1 mm48 parts2LMIT1
AVR/ArduinoTIMPS2Key
Board-Folk
90.6 × 32.2 mm30 parts2LNo license8
AVR/ArduinoMZ80MAX
100 × 55 mm22 parts2LNo license5
AVR/ArduinoLynx-PS2
75.9 × 76.5 mm23 parts2LNo license4
AVR/ArduinoMZ80PS2
67.1 × 67 mm12 parts2LNo license5
AVR/ArduinoMZ80PS2Mini
56.8 × 67 mm12 parts2LNo license5
AVR/ArduinoEinsteinTC01PS2Mini
69.8 × 60.9 mm18 parts2LNo license4
AVR/ArduinoTIMPS2KeyMini
27.5 × 64.6 mm17 parts2LNo license8
The ATMEGA328 in open source designs
The gallery holds 14 open source boards using the ATMEGA328 from 10 GitHub repositories; a typical one measures about 69.8 × 60.9 mm and carries around 27 components.
100% are two-layer designs, the rest use four layers or more, and 29% carry an open source license.
The most starred is ATMEGA328-Motor-Board by AntonioMR.
Parts used alongside the ATMEGA328
Microcontrollers on boards using the ATMEGA328
What boards using the ATMEGA328 are built for
ATMEGA328: common questions
Where can I find a ATMEGA328 reference design?
Each of the 14 boards on this page is a real design using the ATMEGA328. 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 ATMEGA328 use?
Most are built on AVR/Arduino (14).
How big is a typical board using the ATMEGA328?
The median is 69.8 × 60.9 mm, and 100% are two-layer designs.
What is the most popular open source board using the ATMEGA328?
By GitHub stars, ATMEGA328-Motor-Board by AntonioMR, with 39 stars.
Can I simulate one of these boards using the ATMEGA328 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.