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.
Daughter board
97Cweb
20 × 10.8 mm3 parts2LNo license0- schematic only · 12 parts
Cv output
carr-james
12 parts2LNo license0 
Pots
shanteacontrols
390 × 93 mm75 parts2LApache-2.0956
RP2040/RP2350PicoGUS
polpo
103.7 × 74.1 mm46 parts2LGPL-2.0800
EleLab v2 Frontpanel a
Chrismettal
88 × 25 mm23 parts2LGPL-3.0528
Headphones flex pcb rigid
strangeparts
41.7 × 25.7 mm32 parts2LMIT493
Audio in daisy
ohmtech-rdi
25 × 19 mm13 parts2LCC-BY-SA-4.0405
USD extender male
newdigate
24.8 × 10.9 mm3 partsMIT258
AddOnC
freeDSP
380 × 45 mm97 parts2LCC-BY-SA-4.0222
AVR/ArduinoRFBitBangerNano
profdc9
152 × 88 mm209 parts2LNo license221
Vcf core
shmoergh
58 × 65 mm76 parts2LNo license214
Logiverter
nickajeglin
40.1 × 107.1 mm74 parts2LNo license207
Adc344x
loxodes
98 × 55 mm161 parts4LNo license206
Kicad control board smt
matthewcieplak
100 × 110 mm97 parts2LNo license172
VCF Diode Ladder Filter
mzuelch
27.9 × 101.6 mm65 parts2LMIT165
V5 control rack
zynthian
245.6 × 84.9 mm104 parts2LNo license154
AVR/ArduinoMultiClockDiv
ijnekenamay
30 × 105 mm32 parts2LNo license142
Module17 HMI Back Panel
M17-Project
103 × 30.5 mm4 parts2LCERN-OHL-W-2.0129
Steiner parker vcf
44 × 86 mm70 parts2LNo license123
NXPImpact pal
tpcarlson
40.3 × 128.5 mm175 parts2LNo license106
RP2040/RP2350TiNRS - Tuesday
ThisIsNotRocketScience
60.3 × 106.5 mm194 parts2LMIT87
RP2040/RP2350Carte FX 0
PhysicsDptAngers
100 × 100 mm107 parts2LMIT87
Core board
hirakuni45
80 × 80 mm89 parts2LBSD-3-Clause86
RP2040/RP2350Pico 2HP Audio
rheslip
70 × 30.3 mm57 parts2LNo license82
Mynd BT
teufelaudio
55 × 41 mm135 parts4LCC-BY-SA-4.076
Evil Head
a-wai
280 × 120 mm65 parts2LGPL-3.076
TRS-IO-M3
apuder
134 × 74.2 mm40 parts2LGPL-3.074
Volumebuffer
maqifrnswa
59.2 × 36.1 mm31 parts2LGPL-3.073
Z3340 VCO
brer-rabbit
80 × 80 mm139 parts4LGPL-3.068
ESP3232bit
bread-modular
30.5 × 68.6 mm62 parts4LMIT65
DonConPad
ravinrabbid
78.7 × 40.6 mm28 parts2LMIT64
Sca01
gzweigle
91.4 × 33 mm32 parts2LGPL-3.060
Ud27c
97.5 × 97.5 mm106 parts2LNo license56
STM32Radar MCU
ckflight
36.9 × 32.9 mm98 parts4LGPL-3.055
STM32Led power
jkominek
86.4 × 86.4 mm84 parts4LCustom license53
Eurorack SSI2131 VCO
Len42
50.5 × 108.2 mm98 parts2LNo license50
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