3,813 open source AVR/Arduino boards
ATmega and ATtiny microcontrollers, Arduino-compatible boards and Arduino shields. Every board here is a public GitHub project with its KiCad files, read for size, layers and parts. Pick one close to your design and simulate its firmware on HardLabs before you build it.
AVR/ArduinoPORTABLE-ECG
jeis-aj
64.8 × 25.5 mm80 parts2LMIT0
AVR/ArduinoButaBoard
azerimaker
71.6 × 94.2 mm79 parts2LNo license0
AVR/ArduinoMega2560controlshield
hedj
108 × 65.8 mm79 parts2LGPL-3.00
AVR/ArduinoEclectronics micro quad
HALtheWise
83.8 × 74.3 mm79 parts2LNo license0
AVR/ArduinoRTB C10
git4dcc
90.3 × 26.5 mm79 parts2LApache-2.00
AVR/ArduinoTBM930 De ice panel
neilenns
190.5 × 101.6 mm79 parts2LMIT0
AVR/ArduinoNixie-2.1
jhrg
167.1 × 142.8 mm79 parts2LNo license0
AVR/ArduinoSpot-Welder with-MCU
ANSHUMANDOCX
101.4 × 60 mm79 parts2LNo license0
AVR/ArduinoTemperator
KHit6
100 × 140 mm78 parts2LCERN-OHL-W-2.00
AVR/ArduinoDisplayBoard2026
KUBTSSAvionics
101.9 × 34.9 mm78 parts2LNo license0
AVR/ArduinoKiPad
awkwardbunny
81.9 × 126.7 mm78 parts2LNo license0
AVR/ArduinoStno
Heinrich-XIAO
143.2 × 113.5 mm78 parts2LNo license0
AVR/ArduinoEC-DLM-001-Rev9
kevinisabelle
145 × 75 mm78 parts2LNo license0
AVR/ArduinoPIU LED DRIVER MAIN
pogof
85 × 77 mm78 parts2LNo license0
AVR/ArduinoUgrow3
Dhyan-M
70 × 45 mm77 parts2LNo license0
AVR/ArduinoFlying thing that crashes
astra-the-boop
79.2 × 65 mm77 parts2LNo license0
AVR/ArduinoNuBiHo atmega328P
clover-clever
80 × 100 mm77 parts4LNo license0
AVR/ArduinoFuel capacity sensor
gpgreen
70 × 50 mm77 parts2LNo license0
AVR/ArduinoRMK-complete
KarlPeter5039
341.3 × 127 mm77 parts2LNo license0
AVR/ArduinoUniversal can board
franc0r
49.3 × 59.4 mm77 parts2LBSD-3-Clause0
AVR/ArduinoErgonomicGamepad
vemcg
250.2 × 157.5 mm77 parts2LGPL-3.00
AVR/ArduinoOtto-DIY-MUST
TUDA-MUST
58 × 54 mm76 parts4LCC-BY-SA-4.00
AVR/ArduinoEyeWatch
evgenu
38.1 × 38.1 mm76 parts6LNo license0
AVR/ArduinoGreenhouseWateringSystemV1
BRoughley488
78 × 58 mm75 parts4LNo license0
AVR/Arduino6502 Computer
DomAtTheShack
216.6 × 144 mm74 parts2LNo license0
AVR/ArduinoLamps Type5
bgerp
123 × 83 mm74 parts2LNo license0
AVR/ArduinoAVML: PCB1 & PCB2
joem
37.5 × 100 mm74 parts2LNo license0
AVR/ArduinoRhino
Nu-hin
160 × 58 mm74 parts2LNo license0
AVR/ArduinoVehicle Accessory Controller
EmbeddedDesign
61.4 × 75.2 mm74 parts4LNo license0
AVR/ArduinoArduino mega design
ISLOWIsmaeli
101.6 × 53.3 mm73 parts2LNo license0
AVR/ArduinoImac
jreus
90 × 67 mm73 parts2LNo license0
AVR/ArduinoLinux soc
NEOgHacking
25.5 × 32 mm73 parts4LNo license0
AVR/ArduinoHigh Torque Servo Arm: Main
akornsys-rdi
100 × 72 mm73 parts2LGPL-3.00
AVR/ArduinoPCB Business Card
Bumb1eris
85.6 × 54 mm73 parts2LMIT0
AVR/ArduinoRcl
0x007E
52 × 52 mm73 parts2LCC-BY-NC-4.00
AVR/ArduinoPowerShuffler1
marmot-innovations
101.6 × 44.5 mm72 parts4LGPL-3.00
Browse boards by part
AMS1117-3.3 1847USBLC6-2SC6 1502RP2040 1017W25Q128JVS 654AP2112K-3.3 635ESP32-S3-WROOM-1 488TL072 446L7805 43674HC595 404TL074 404CH340C 392LM358 367Pico 356USBLC6-2P6 351AP2112K-3.3TRG1 345Arduino_Nano_v3.x 317LM7805_TO220 315ProMicro 29774LS04 285ESP32-WROOM-32 285PC817 260SRV05-4 25874LS245 257TP4056 250