2,432 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.
Kicad control board
matthewcieplak
100 × 110 mm97 parts2LNo license172
Abakus Main
mzuelch
69.9 × 108 mm87 parts2LMIT165
V5 control
zynthian
241 × 104.5 mm104 parts2LNo license154
AVR/ArduinoQuantizer
ijnekenamay
30 × 99 mm35 parts2LNo license142
TinyLlama-Wavetable
eivindbohler
45 × 76 mm11 parts2LGPL-3.0134
Module17 HMI
M17-Project
97 × 80.9 mm49 parts4LCERN-OHL-W-2.0129
Preenfm3
Ixox
208 × 95.7 mm6 parts2LNo license127
Ui
shmoergh
284 × 185.5 mm138 parts4LNo license123
Volume daughterboard
LouDnl
52.6 × 18.5 mm28 parts2LGPL-2.0117
NXPAudio board
FOSDEM
152 × 61.5 mm176 parts4LNo license114
Keyboard matrix
oskitone
175.3 × 28.6 mm21 parts2LCustom license114
PC-KHARON-386-TOP
UzixLS
100 × 100 mm149 parts4LCC-BY-SA-4.0111
Frontpanel
westlicht
172.5 × 128.3 mm91 parts2LCC-BY-NC-4.0109
Twoshot
tpcarlson
70.8 × 128.5 mm185 parts2LNo license106
RP2040/RP2350Space
ThisIsNotRocketScience
119.4 × 110.4 mm249 parts4LMIT87
RP2040/RP2350AS3397 eurorack 0603
PhysicsDptAngers
92.2 × 64.2 mm110 parts2LMIT87
RP2040/RP23504HPicoDSP
rheslip
20.3 × 110 mm71 parts2LNo license82
Mynd AMP
teufelaudio
90.5 × 57.5 mm158 parts2LCC-BY-SA-4.076
Evil Eddie
a-wai
280 × 120 mm78 parts2LGPL-3.076
ESP32NextTRS
apuder
145.7 × 107.8 mm93 parts2LGPL-3.074
Amp
maqifrnswa
104.1 × 51.8 mm47 parts2LGPL-3.073
RP2040/RP2350RP2040 DSP Modular
DMME-NL
166.2 × 92.6 mm100 parts2LGPL-3.071
Audio-Breakout
ctag-fh-kiel
27 × 66 mm28 parts2LNo license70
Zoxnoxious Pole Dancer Mixing Filter
brer-rabbit
80 × 80 mm150 parts4LGPL-3.068
Base
bread-modular
223.5 × 160 mm163 parts2LMIT65
RP2040/RP2350DonConIOmini
ravinrabbid
54 × 64 mm89 parts2LMIT64
Sca00
gzweigle
91.4 × 33 mm32 parts2LGPL-3.060
Ud29
profdc9
97.5 × 97.5 mm123 parts2LNo license56
Radar RF
ckflight
42.9 × 24.5 mm138 parts4LGPL-3.055
STM32ADC Board
jkominek
92.7 × 83.8 mm100 parts4LCustom license53
AVR/ArduinoArduino NMR 5.2
SoukeyCircuits
100 × 75 mm76 parts4LGPL-3.052
Switches
Len42
40.1 × 108.2 mm98 parts2LNo license50
AVR/ArduinoKeyboard
danwerner21
282.7 × 108.3 mm57 parts2LNo license50
STM32OTTO-main
cester-ino
247 × 81 mm142 parts4LGPL-3.049
StompBox
207 × 52 mm37 parts2LNo license49
ESP32Shuttle
uli
50 × 50 mm19 parts2LNo license48
Browse boards by part
AMS1117-3.3 1069USBLC6-2SC6 866RP2040 632W25Q128JVS 394TL072 319AP2112K-3.3 313TL074 281ESP32-S3-WROOM-1 268CH340C 249L7805 229Pico 22174HC595 218USBLC6-2P6 206LM358 20074LS04 180AP2112K-3.3TRG1 179ESP32-WROOM-32 169LM7805_TO220 167SRV05-4 165Arduino_Nano_v3.x 16474LS245 160W25Q128JVSIQ 15774LS138 15574LS32 152