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.

3,813 boardsClear filters|Most starred

AVR/Arduino
ATtinyTorture
flynn-28
37.2 × 31.8 mm6 parts2LGPL-3.00
AVR/Arduino
Usb joystick controller
manhoosbilli1
2.6 × 2.6 mm5 parts2LNo license0
AVR/Arduino
1541-II-low profile rom switcher
jwestfall69
18.4 × 41.5 mm5 parts2LUnlicense0
AVR/Arduino
Sch2header
DeshmukhMalhar
21.7 × 10.5 mm5 parts2LNo license0
AVR/Arduino
Layout-01
P-r-i-t-h-v-i
35 × 25 mm4 parts2LNo license0
AVR/Arduino
Schematics
Akku-Craft
21.5 × 11.3 mm4 parts2LCC-BY-NC-4.00
AVR/Arduino
Game-Console
li231sd
124.9 × 52.2 mm4 parts2LNo license0
AVR/Arduino
Ches pur ofi
luqas11
70 × 100 mm4 parts2LNo license0
AVR/Arduino
MochiRadio
frankie-eight-days
17.6 × 7.9 mm4 parts2LMIT0
AVR/Arduino
P2000t cartridge reader
ifilot
68.6 × 53.3 mm3 parts2LGPL-3.00
AVR/Arduino
Attiny soic-14-barebone breakout board
jaco-pixeldump
21.1 × 19.6 mm3 parts2LMIT0
AVR/Arduino
LED Morse Simulation And Decoder
GBansal07
30.5 × 54.9 mm2 parts4LNo license0
AVR/Arduino
Swan lake music art
AravinthPanch
38.1 × 27.9 mm2 parts2LApache-2.00
AVR/Arduino
Ipd sem3
malharshah04
120 × 120 mm1 parts2LNo license0
schematic only · 147 parts
AVR/Arduino
CtLab
MovGP0
147 partsNo license0
schematic only · 141 parts
AVR/Arduino
Cw transceiver
Green-Avocado
141 partsNo license0
schematic only · 113 parts
AVR/Arduino
Stripboard-Designer
ElliOl
113 partsNo license0
schematic only · 97 parts
AVR/Arduino
LED matrix
dstreby
97 partsNo license0
schematic only · 73 parts
AVR/Arduino
ABK-20
8BitMixtape
73 parts2LNo license0
schematic only · 73 parts
AVR/Arduino
Concordia
LamdaDev
73 partsNo license0
schematic only · 69 parts
AVR/Arduino
Cv light
centrevillage
69 partsNo license0
schematic only · 58 parts
AVR/Arduino
Voltmeter
wolly981
58 partsNo license0
schematic only · 58 parts
AVR/Arduino
RoboArm
anissa-elias
58 partsNo license0
schematic only · 52 parts
AVR/Arduino
AVR Meter
danielboston38
52 partsGPL-3.00
schematic only · 50 parts
AVR/Arduino
C444
hkstwk
50 partsNo license0
schematic only · 47 parts
AVR/Arduino
Entrenador atmega328p
davixcky
47 partsNo license0
schematic only · 46 parts
AVR/Arduino
ESP32-M12-CAN-Power-Adapter
lessthancompetent
46 partsNo license0
schematic only · 42 parts
AVR/Arduino
Saxion-Sky-Projector
Emanuel-de-Jong
42 partsNo license0
schematic only · 36 parts
AVR/Arduino
ASME-task2
Ayush-Malik-07
36 partsNo license0
schematic only · 36 parts
AVR/Arduino
Breadboard-Power-Supply
leboeuf-dup
36 parts2LNo license0
schematic only · 34 parts
AVR/Arduino
Ay module
dnewcome
34 partsNo license0
schematic only · 34 parts
AVR/Arduino
Doorwatch
GermanTinkerguy
34 partsNo license0
schematic only · 31 parts
AVR/Arduino
Arduino si5351-rf signal generator
mohit716
31 partsNo license0
schematic only · 28 parts
AVR/Arduino
67-handwire split keyboard
verdriet6
28 partsNo license0
schematic only · 27 parts
AVR/Arduino
RetroPad build123d
Sanchit0987
27 partsNo license0
schematic only · 27 parts
AVR/Arduino
FireBot696
evansfsu
27 partsNo license0