740 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.
FPGAReDIP-64
daglem
25.4 × 50.8 mm137 parts6LNo license20
Transcribe
cyberboy666
100 × 45 mm28 parts2LNo license20
FreeDSP-OCTAVIA
freeDSP
178 × 99 mm505 parts4LCC-BY-SA-4.019
CoreOne xCORE200-Original
ohdsp
100 × 100 mm389 parts4LNo license19
Toern
Soundpauli
160 × 71 mm118 parts4LCC-BY-NC-4.019
Expander
plinkysynth
43.2 × 128.3 mm68 parts2LCC-BY-NC-4.019
AVR/ArduinoATAPIMega
Manawyrm
100 × 100 mm59 parts4LGPL-3.018
NXPTeensyRPR
RobustRobby
48 × 59.5 mm58 parts2LGPL-3.018
NXPVindor
ftrias
264 × 34 mm90 parts2LCustom license17
Gameboy DMG Headphone Jack
wiretap-retro
46.7 × 16.8 mm8 parts2LCC0-1.017
Raspberry PiI n c u r v5
100 × 100 mm30 parts2LGPL-3.016
DAC-ADAU1966
100 × 100 mm306 parts4LTAPR-OHL-1.015
Sisu SSE-9
briskspirit
43.9 × 118.2 mm259 parts6LUnlicense15
Poncho MIDI
ciaa
85.8 × 137 mm126 parts2LNo license15
Alim10o
acmo0
137.8 × 91.4 mm86 parts2LGPL-3.014
VhARIO-ESPC3
har-in-air
74 × 34 mm52 parts2LGPL-3.013
STM32Marbles v70
mort13
88.9 × 106.1 mm207 parts2LGPL-3.012
Ardor
balazsbencs
37 × 20.5 mm20 parts2LMIT12
Panning Mixer
powsplatboom
243.8 × 100 mm633 parts4LNo license11
OSVA
OneAudio
125 × 150 mm357 partsGPL-3.011
AVR/ArduinoThe Bonkulator
shannon-greenlight
70.8 × 110 mm255 parts4LGPL-3.011
Haible tau phaser plug in board
JordanAceto
58.4 × 50.8 mm139 parts2LCC-BY-4.011
TOP
Chrismettal
52 × 63 mm81 parts2LCC-BY-SA-4.011
RP2040/RP2350Pico2-test mule
mikesmitty
52.5 × 42 mm68 parts2LCERN-OHL-P-2.011
WBLNA
33 × 45 mm47 parts2LNo license11
HF-PA-Combined
kholia
102 × 72 mm36 parts2LCustom license11
Buffer pedal
ciwhitfill
20.9 × 21.2 mm12 parts2LNo license11
Micro-Pico Tiny Monosynth
134.6 × 113 mm282 parts4LCC-BY-4.010
STM32Cats eye
lennartquerter
90 × 110 mm223 parts4LCC-BY-NC-4.010
Comb Filter
BruteClaw
100 × 110 mm168 parts2LGPL-3.010
TriMiXxX MIDI S3 Mini Control board
usr-ein
90 × 70 mm71 parts2LGPL-3.010
The Wozblaster Reloaded
cristianoag
100 × 64.8 mm46 parts2LNo license10
DiodeORLogic
ijnekenamay
92.4 × 91 mm20 parts2LNo license10
Open covg daq
lucask07
157.8 × 95.2 mm596 parts6LGPL-3.09
Daisy hardware v1
rafkhan
50.5 × 128.3 mm110 parts4LNo license9
VCO
VincentPeters
37 × 113.9 mm104 parts2LNo license9
Browse boards by part
AMS1117-3.3 345USBLC6-2SC6 296RP2040 224W25Q128JVS 135TL072 118CH340C 116AP2112K-3.3 103ESP32-S3-WROOM-1 97TL074 94AP2112K-3.3TRG1 82SRV05-4 73W25Q128JVSIQ 73USBLC6-2P6 70Pico 52L7805 50XC6206P332MR 50MCP73831T-2ACI/OT 49SN65HVD230 49AMS1117-5.0 48ESP32-S3-WROOM-1-N16R8 48LM393 44BME280 43DW01A 43LAN8710A-EZC(QFN32) 43