2,492 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.
- schematic only · 12 parts
Cv scale offset
carr-james
12 parts2LNo license0 
STM32MBO
shanteacontrols
390 × 78.2 mm45 parts2LApache-2.0956
PicoGUS Hand386
polpo
29.2 × 75.2 mm43 parts4LGPL-2.0800
EleLab v2 PowerFeed
Chrismettal
68 × 50 mm11 parts2LGPL-3.0528
Audio out daisy
ohmtech-rdi
25 × 19 mm13 parts2LCC-BY-SA-4.0405
AddOnD
freeDSP
186 × 36 mm81 parts2LCC-BY-SA-4.0222
BitBangDisplay
profdc9
100 × 88 mm78 parts2LNo license221
Utils output core
shmoergh
58 × 65 mm70 parts2LNo license214
Surfgen
nickajeglin
152.4 × 81.3 mm64 parts2LNo license207
Sequencing ltc2937
loxodes
58 × 56 mm153 parts4LNo license206
AVR/ArduinoKicad cpu board
matthewcieplak
78.5 × 69 mm56 parts2LNo license172
Dual VCA #2 Main
mzuelch
58.4 × 101.6 mm63 parts2LMIT165
2044vcf
ijnekenamay
30 × 100 mm31 parts2LNo license142
Module17 HMI Front Panel
M17-Project
102.8 × 30.3 mm4 parts2LCERN-OHL-W-2.0129
RP2040/RP2350Midi2cv
83 × 69 mm44 parts2LNo license123
Mv2 taa3040
FOSDEM
108.5 × 53 mm113 parts4LNo license114
RP2040/RP2350Sycamore
tpcarlson
60.1 × 128.5 mm145 parts2LNo license106
RP2040/RP2350TiNRS - Wobbler SMDLeds
ThisIsNotRocketScience
60.3 × 106.5 mm192 parts2LMIT87
RP2040/RP2350AS3397 proto SMS
PhysicsDptAngers
70.5 × 100.2 mm105 parts2LMIT87
RP2040/RP2350Pico 2HP
rheslip
70 × 30.3 mm52 parts2LNo license82
Mynd UI
teufelaudio
116 × 26 mm81 parts2LCC-BY-SA-4.076
Dirty Greed
a-wai
299.5 × 120 mm64 parts2LGPL-3.076
TRS-IO-M1
apuder
118.8 × 94 mm36 parts2LGPL-3.074
Powersupply
maqifrnswa
51.8 × 47 mm9 parts2LGPL-3.073
Z3372 Filter
brer-rabbit
80 × 80 mm120 parts4LGPL-3.068
AVR/ArduinoMidi
bread-modular
30.5 × 68.6 mm62 parts2LMIT65
AceA00
gzweigle
24.1 × 46.7 mm26 parts2LGPL-3.060
Psoc5power2
89.7 × 88.3 mm93 parts2LNo license56
STM32Pedal board
jkominek
108 × 56 mm43 parts2LCustom license53
Eurorack Dual LFO
Len42
50.5 × 108.2 mm79 parts2LNo license50
OTTOdac
cester-ino
38.8 × 66.6 mm38 parts2LGPL-3.049
MegaAV CE VA0
RIP-Felix
50 × 50 mm128 parts4LCERN-OHL-S-2.047
Rca panel
FutureSharks
141 × 52.1 mm21 partsGPL-3.045
FP Rev 21
curtisseizert
103.8 × 53 mm9 parts2LMIT35
Andes
niektb
40 × 110 mm109 parts2LCC-BY-SA-4.034
Multibus frontboard
coriolisinstruments
526 × 20 mm30 parts2LNo license33
Browse boards by part
AMS1117-3.3 1196USBLC6-2SC6 983RP2040 699W25Q128JVS 421AP2112K-3.3 376TL072 339TL074 307ESP32-S3-WROOM-1 304CH340C 274L7805 271Pico 25174HC595 248USBLC6-2P6 248LM358 228AP2112K-3.3TRG1 205Arduino_Nano_v3.x 19774LS04 193LM7805_TO220 185ESP32-WROOM-32 18274LS245 171SRV05-4 169W25Q128JVSIQ 16974LS138 16274LS32 161