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.
Input stage
BasementCircuits
45 × 85 mm17 parts2LCERN-OHL-W-2.06
IlluminatedToggleSwitch 3U10HPvarBv2
MostlyCoraGrace
50.5 × 128.5 mm14 parts2LMIT6
Connect board
mbouyer
61 × 34.3 mm7 parts2LBSD-2-Clause6
Ospreys
apaleslimghost
171.5 × 208 mm79 parts2LMIT5
BMP RussianClone old
cracked-machine
41.9 × 92 mm57 parts2LNo license5
Audio module
hackclub
25.5 × 32 mm23 parts2LGPL-3.05
Icom-GX16
open-headset-interconnect-standard
27.3 × 38.1 mm5 parts2LCC-BY-4.05
NXPClarinoid bodytest
thenfour
258 × 28 mm106 parts2LNo license4
ESP32Audio board for ESP32 module
KomplexKapharnaum
99 × 109 mm26 parts2LMIT4
A2600 Faceplate synthcart
tebl
61 × 99.7 mm4 parts2LCERN-OHL-1.24
FilterMotherboard old
mit-ll
107 × 69.2 mm112 parts4LCustom license3
STM32Power SMPS
Synthron
160 × 100 mm112 parts2LNo license3
RP2040/RP2350V4d1 pico
tomcombriat
54.2 × 95.2 mm96 parts2LTAPR-OHL-1.03
MSM Stereo LPF envelope follower board
JordanAceto
30.5 × 190.5 mm51 parts2LNo license3
WEASEL KiCad virtualModMatrix
joebmz98
151 × 48.5 mm27 parts2LMIT3
AVR/ArduinoXPS:Channel:Controller
yu2924
40.6 × 30.5 mm20 parts2LCC0-1.03
Eurobusboard jst 8
DIYSynthMNL
188.8 × 19.6 mm18 parts2LGPL-3.03
Mcu cassette
AravinthPanch
80.4 × 50 mm7 parts2LApache-2.03
STM32Wave Folder
99.1 × 99.1 mm91 parts2LCC-BY-4.02
DMH Output PCB Controls
DeMarco
48 × 121 mm85 parts2LCC0-1.02
Softstart
280 × 120 mm82 parts2LNo license2
Fiber control board
stockmann-lab
119.5 × 139 mm54 parts2LNo license2
Display board
swiszczoo
200 × 38.5 mm54 parts2LNo license2
VCF
PancakeLegend
50 × 100 mm47 parts2LGPL-3.02
OTTOdac
cester-ino
38.8 × 66.6 mm38 parts2LGPL-3.02
LT3042 breakout with error done
ljufa
10.2 × 14.6 mm10 parts2LMIT2
Headphone daughterboard
Jaxc
83 × 50 mm5 parts4LGPL-3.02
Kwpa ldmos2
msayad97
200 × 116 mm159 parts2LNo license1
Bumpstock
velvia-fifty
141.8 × 128.5 mm140 parts2LCC-BY-NC-4.01
Josh Ox Ribbon Synth ADSR board
172.7 × 108 mm120 parts2LCC-BY-4.01
Boss ce2 revision basic
erincyldz
114.5 × 100 mm111 parts2LNo license1
Unbalanced Analog Audio Output Board for SmallDSP
Gemuesesaft
80 × 50 mm108 parts4LGPL-3.01
Psoc5power2
iduwhux
89.7 × 88.3 mm93 parts2LNo license1
Bt module
adeboni
10 × 108 mm46 parts2LGPL-3.01
Class H AB
OSHE-Github
122 × 63.5 mm45 parts2LNo license1
AVR/Arduino4s2p 18650 Mount, BMS with Power Distribution Circuit
Wierdwizard2587
165.7 × 94.8 mm36 parts2LNo license1
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