55 open source boards using the ATMEGA328P-A
Real designs built with the ATMEGA328P-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/ArduinoIndicator board 3V3 & 5V
callmestiles
100 × 73.3 mm83 parts2LNo license2
AVR/ArduinoArduino usb c
wszeto9
98.4 × 99.5 mm47 parts2LNo license1
AVR/ArduinoAMS slave
HKUST-Red-Bird-Racing-EVRT
68 × 110 mm189 parts2LNo license0
AVR/ArduinoRover motor hat
dark-Phoenix2077
54 × 24 mm34 parts4LNo license0
AVR/ArduinoTemperature
boanjo
45.4 × 89.9 mm30 parts2LNo license4
AVR/ArduinoDigital
Synthron
160 × 100 mm99 parts2LNo license2
AVR/ArduinoTD4dip Grove
akita11
47 × 72 mm64 parts2LMIT1
AVR/ArduinoBDUCU
140 × 60 mm169 parts2LNo license0
AVR/ArduinoEasyduino Atmega Nano
Hanqaqa
43.4 × 18 mm30 parts4LCERN-OHL-P-2.0746- schematic only · 6 partsAVR/Arduino
Arduino nano
lhondareyte
6 parts2LCC-BY-4.01 
AVR/ArduinoElectron-PS2Slim
Board-Folk
81.1 × 33.6 mm39 parts2LNo license4
AVR/ArduinoCharger
100 × 100 mm126 parts2LNo license0
AVR/ArduinoCPC464-2MINIPS2
24.7 × 67.6 mm17 parts2LNo license10
AVR/ArduinoFront dash unit
101 × 63.3 mm90 parts2LNo license0
AVR/ArduinoTSALG ACCUM V2
140 × 60 mm88 parts2LNo license0
AVR/ArduinoSSRU v4.0
95 × 78 mm68 parts2LNo license0
AVR/ArduinoGen 6 ts indicator v1.0
66.8 × 60 mm46 parts2LNo license0
AVR/ArduinoATMEGA328P
Tert2
36 × 37.5 mm17 parts4LNo license0
AVR/Arduino600 to 12V dc
66.8 × 60 mm26 parts2LNo license0
Browse boards by part
AMS1117-3.3 899USBLC6-2SC6 763RP2040 566W25Q128JVS 345AP2112K-3.3 273TL072 269TL074 250ESP32-S3-WROOM-1 229CH340C 221L7805 208Pico 19274HC595 185USBLC6-2P6 174LM358 16874LS04 160SRV05-4 158AP2112K-3.3TRG1 154ESP32-WROOM-32 15374LS245 14474LS138 138W25Q128JVSIQ 135Arduino_Nano_v3.x 13474LS00 133TP4056 130