1,461 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.
RP2040/RP2350Pico dco
polykit
100 × 165 mm148 parts2LNo license161
V5 main
zynthian
245.2 × 100 mm144 parts2LNo license154
AVR/ArduinoCHORD VCO
ijnekenamay
30 × 100 mm37 parts2LNo license142
Raspberry PiMt32-pi midi hat
chris-jh
64.3 × 56 mm22 parts2LGPL-3.0137
ESP8266TinyLlama
eivindbohler
100 × 77 mm138 parts4LGPL-3.0134
STM32Module17
M17-Project
100 × 83 mm186 parts4LCERN-OHL-W-2.0129
Preenfm3 controle board
Ixox
135.9 × 87 mm64 parts2LNo license127
Core
shmoergh
215 × 100 mm285 parts2LNo license123
FunKey-S-Hardware
FunKey-Project
42 × 32 mm212 partsCC-BY-4.0123
Raspberry PiRecurBOY
cyberboy666
100 × 100 mm33 parts2LGPL-3.0122
RP2040/RP2350Acid Synth
lonesoulsurfer
169 × 114.5 mm33 parts2LNo license120
USBSID-Pico
LouDnl
92.8 × 71.8 mm83 parts2LGPL-2.0117
AVR/ArduinoMegaMIDI
AidanHockey5
100 × 100 mm102 parts2LAGPL-3.0116
RP2040/RP2350Fosdem dual capture
FOSDEM
87.9 × 95.8 mm211 parts4LNo license114
AVR/ArduinoScout
oskitone
145.3 × 44.5 mm38 parts2LCustom license114
ESP8266PC-KHARON-386-MAIN
UzixLS
100 × 100 mm157 parts4LCC-BY-SA-4.0111
STM32PER|FORMER eurorack sequencer
westlicht
171.5 × 106.7 mm304 parts2LCC-BY-NC-4.0109
JOVE
minisystem
65 × 100 mm153 parts2LNo license109
Gamegirl
davidperrenoud
65 × 100 mm88 parts2LNo license109
RP2040/RP2350Cyclic
tpcarlson
241.2 × 160 mm437 parts4LNo license106
RISC-VFroggyswadge
cnlohr
81.5 × 72.2 mm92 parts2LMIT105
Spark synth hardware
povle
261 × 18 mm17 parts2LCC-BY-NC-4.099
STM32Guitarboard
JonasNorling
49.7 × 49.7 mm86 parts2LMIT97
STM32Hawk
Ryzee119
41 × 41 mm34 parts2LMIT95
STM32Midi grid
zukaitis
275 × 200 mm319 parts2LCC-BY-4.092
AVR/ArduinoGenny
superjoebob
100 × 100 mm102 parts2LNo license92
Poly555
184 × 114.8 mm248 parts2LCustom license91
Polykit X1 Monosynth
200 × 100 mm147 parts2LNo license89
ClumsyMIDI
gmcn42
65 × 56 mm21 parts2LCC-BY-SA-4.089
RP2040/RP2350TiNRS - DuckTape
ThisIsNotRocketScience
60.3 × 106.5 mm255 parts2LMIT87
RP2040/RP2350AS3397 proto DIP
PhysicsDptAngers
167.6 × 97.5 mm138 parts2LMIT87
RP2040/RP23504HPico
rheslip
20.3 × 110 mm71 parts2LNo license82
Design os-3d blender
jangtrinh
54 × 46 mm20 parts2LMIT81
STM32Gk pcbv3
jncronin
108 × 158.8 mm276 parts6LNo license78
STM32Mynd Main
teufelaudio
75 × 136 mm560 parts4LCC-BY-SA-4.076
DG Custom
a-wai
360 × 120 mm81 parts2LGPL-3.076