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.
Feitw
mort13
19.1 × 100 mm40 parts2LGPL-3.012
AddBuff main
banjomasterpete
30 × 105 mm37 parts2LNo license12
ReZyklus - MIDI Board
jeroenhn
182.3 × 16.5 mm7 parts2LNo license12
Late MS20 VCF plug in board
JordanAceto
58.4 × 50.8 mm66 parts2LCC-BY-4.011
OutputBoard
powsplatboom
40 × 70 mm35 parts2LNo license11
Proto-Simple
Chrismettal
52 × 63 mm5 parts2LCC-BY-SA-4.011
VCF THT
BruteClaw
54 × 100 mm48 parts2LGPL-3.010
Cable tester
lennartquerter
100 × 100 mm31 parts2LCC-BY-NC-4.010
Dspod panel
emeb
71.1 × 128.5 mm4 parts2LMIT10
Util LFO
VincentPeters
27.2 × 37.1 mm23 parts2LNo license9
Adapter 2U27HP3uAv2
MostlyCoraGrace
137 × 84.1 mm12 parts2LMIT6
Kestrels
apaleslimghost
70.5 × 59.2 mm19 parts2LMIT5
Kenwood-RJ45
open-headset-interconnect-standard
27.3 × 30.5 mm3 parts2LCC-BY-4.05
STM32Diode Tester
Synthron
160 × 100 mm85 parts2LNo license3
Dz HeadPhones Amp
dzavalishin
76.2 × 69.9 mm79 parts2LNo license3
Shift inside
tomcombriat
62.4 × 80.6 mm32 parts2LTAPR-OHL-1.03
Audio
OpenAir-Lab
41 × 25.4 mm22 parts2LMIT3
HDCombinator
mit-ll
93.6 × 90.2 mm3 parts2LCustom license3
STM32Dual VCA
99.1 × 99.1 mm70 parts2LCC-BY-4.02
Z80-MIDI
dennis9819
160 × 100.3 mm32 parts2LNo license2
Mixer + Noise Source
PancakeLegend
30 × 100 mm21 parts2LGPL-3.02
Output conn ODU 10x9 32ch
stockmann-lab
72 × 104 mm5 parts4LNo license2
Superstitious Acrobat
velvia-fifty
100 × 94 mm49 parts2LCC-BY-NC-4.01
Full bridge
iduwhux
98.6 × 98.6 mm46 parts2LNo license1
RP2040/RP2350Ecg carrier
adeboni
30 × 100 mm22 parts2LGPL-3.01
Aussteuerung
FordPrfkt
100 × 40 mm17 parts2LNo license1
Big muff portion
Wierdwizard2587
31 × 37 mm11 parts2LNo license1
RISC-VDAC HPA 100x100 TIMER STUDY ONLY
ooyang0325
100 × 100 mm470 parts4LNo license0
NXPQuad Preamp and 4-Channel Ambisonic Recorder
jdg511
138 × 114 mm242 parts4LNo license0
RP2040/RP2350Mcu east ground staged
dcuccia
44.5 × 48.4 mm84 parts4LMIT0
DUAL VCA
Desval27
160 × 100 mm68 parts2LMIT0
ASDR rev3
blthree
59.7 × 84.7 mm63 parts2LNo license0
Musicbrain matrix c
MarkWestbroek
154 × 133 mm63 parts4LMIT0
Buffer 1.2
rhinocerose
19.1 × 108.5 mm50 parts2LNo license0
STM32Test via 65 78
akularya6-del
15 × 31 mm38 parts4LNo license0
Offsetscaler
eblade
66 × 99.1 mm34 parts2LNo license0
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