2,590 open source boards in Audio
Amplifiers, DACs, synthesizers, Eurorack modules, MIDI and guitar pedals. 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.
Simplemix
nickajeglin
94 × 151.3 mm41 parts2LNo license207
Adc dual
loxodes
49.8 × 36 mm78 parts4LNo license206
Buffered Multiple SMD Main
mzuelch
38.1 × 101.6 mm49 parts2LMIT165
ZynScreen v1.5
zynthian
97.3 × 71 mm40 partsNo license154
AVR/ArduinoKICK
ijnekenamay
30 × 100 mm27 parts2LNo license142
Adapter spdif
FOSDEM
44 × 33 mm11 parts2LNo license114
Kinky lynx
tpcarlson
40.3 × 128.5 mm129 parts2LNo license106
RP2040/RP2350WhiteRabbit
ThisIsNotRocketScience
40 × 100 mm146 parts2LMIT87
Poly UA controller 6enc 4sw
PhysicsDptAngers
110.3 × 73.5 mm29 parts2LMIT87
Mynd LINE IN Jack
teufelaudio
24.1 × 16.5 mm18 parts2LCC-BY-SA-4.076
Zoxnoxiouscard
brer-rabbit
80 × 80 mm16 parts4LGPL-3.068
AVR/ArduinoHihat
bread-modular
30.5 × 68.6 mm52 parts2LMIT65
Hps06
gzweigle
38.1 × 10.2 mm5 parts2LGPL-3.060
Half bridge
profdc9
96.5 × 98 mm78 parts2LNo license56
Led test bar
jkominek
174 × 16.5 mm31 parts2LCustom license53
Eurorack Noise / S&H Module
Len42
50.8 × 106.7 mm70 parts6LNo license50
Crystaltriggeramp
jonnor
25 × 34 mm11 parts2LNo license43
Fv1 module
niektb
40 × 110 mm80 parts2LCC-BY-SA-4.034
1u lpg
coriolisinstruments
38 × 22 mm6 parts2LNo license33
AVR/ArduinoTransistor matcher
rabidaudio
14 parts2LMIT31
PanVCA Main
Thorinair
19.5 × 108.6 mm80 parts2LCC-BY-SA-4.025
Vm128-preview mux
mirdej
25 × 99.5 mm70 parts2LNo license23
ESP32ESP32 laptop midi
collaborative-music-lab
97 × 38 mm19 parts2LNo license19
VCA
telec16
40 × 200 mm54 parts2LNo license16
HDD Synth ISA adapter
MaverickUK
124.5 × 85.9 mm6 parts2LCC-BY-NC-4.015
Deep blue delay
bubbajfett
54.9 × 57.7 mm49 parts2LCC0-1.014
Lmnc ar ad
zero-emission
64 × 29 mm23 parts2LNo license14
Splt mlt
mort13
26 × 110 mm53 parts2LGPL-3.012
OAS
banjomasterpete
20 × 110 mm38 parts2LNo license12
SSI2164 LPF plug in board
JordanAceto
58.4 × 50.8 mm70 partsCC-BY-4.011
Feed Forward Compressor 14HP
powsplatboom
71.1 × 95 mm45 parts2LNo license11
LowerSmart
Chrismettal
52 × 40 mm18 parts2LCC-BY-SA-4.011
Band MODULE V1 00
kholia
45.4 × 14.8 mm12 parts2LCustom license11
VCF
BruteClaw
54 × 100 mm48 parts2LGPL-3.010
ESP32Dspod esp32s3
emeb
26.4 × 41.7 mm48 parts4LMIT10
STM32Synth Module
lennartquerter
30 × 110 mm34 parts2LCC-BY-NC-4.010
Browse boards by part
AMS1117-3.3 1287USBLC6-2SC6 1056RP2040 725W25Q128JVS 444AP2112K-3.3 408TL072 347ESP32-S3-WROOM-1 324TL074 308CH340C 290L7805 29074HC595 267USBLC6-2P6 260Pico 258LM358 237AP2112K-3.3TRG1 22474LS04 207ESP32-WROOM-32 203Arduino_Nano_v3.x 202LM7805_TO220 20174LS245 18474LS138 176SRV05-4 17674LS08 17574LS32 175