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.
ToggleSwitch wH 1U23HP3x1Av2
MostlyCoraGrace
116.5 × 39.7 mm13 parts2LMIT6
GPS module
mbouyer
58.4 × 21.6 mm6 parts2LBSD-2-Clause6
BMP SuperColliderClone old
cracked-machine
41.9 × 92 mm57 parts2LNo license5
Zebras
apaleslimghost
280 × 90 mm36 parts2LMIT5
MEA8000
Fred72z
76.2 × 49.5 mm25 parts2LGPL-2.05
Audio
anton-vinogradov
80 × 60 mm19 parts2LMIT5
Kenwood-GX16
open-headset-interconnect-standard
27.3 × 38.1 mm5 parts2LCC-BY-4.05
ESP32Audio board for ESP32 module
KomplexKapharnaum
99 × 109 mm26 parts2LMIT4
ESP8266App audio
zyyan20h
57 × 33 mm24 parts2LNo license4
STM32Waveform Generator
Synthron
160 × 100 mm105 parts2LNo license3
NXPSAX 3
tomcombriat
132 × 90.4 mm44 parts2LTAPR-OHL-1.03
FilterDaughterboard old
mit-ll
26.7 × 28.1 mm38 parts4LCustom license3
STM32ACOUSTIC-PHANTOM — Acoustic Side-Channel Analyzer
jayis1
120 × 22 mm20 parts4LNo license3
XPS:Channel:ControlPanel
yu2924
42 × 34 mm16 parts2LCC0-1.03
AVR/ArduinoECG Baseboard : araBeat
AravinthPanch
40 × 100 mm4 parts2LApache-2.03- schematic only · 4 parts
Mains transformer
JordanAceto
4 parts2LNo license3 
STM32Optical phasor plug in board
58.4 × 50.8 mm89 parts2LCC-BY-4.02
Output conn ODU 7x6 16ch bck
stockmann-lab
72 × 114 mm46 parts4LNo license2
VCO
PancakeLegend
50 × 100 mm41 parts2LGPL-3.02
Supply board
swiszczoo
150 × 56 mm38 parts2LNo license2
LT3042 breakout
ljufa
10.2 × 14.6 mm7 parts2LMIT2
Kosmo Format Front Panel - 5 cm
DeMarco
50 × 200 mm3 parts2LCC0-1.02
Amplifier
msayad97
162.3 × 144.3 mm152 parts4LNo license1
Zoetrope
velvia-fifty
30 × 128.5 mm125 parts2LCC-BY-NC-4.01
Balanced Analog Input Board for SmallDSP
Gemuesesaft
110 × 60 mm85 parts4LGPL-3.01
AVR/ArduinoLineinterrupter
iduwhux
74.4 × 99.3 mm85 parts2LNo license1
Josh Ox Ribbon Synth Sample and Hold Board
40.6 × 203.2 mm69 parts2LCC-BY-4.01
Ecg
adeboni
10 × 100 mm41 parts2LGPL-3.01
NXPAFPI Device V1.1
Wierdwizard2587
85 × 45 mm28 parts2LNo license1
Protection
FordPrfkt
80 × 50 mm25 parts2LNo license1
Audio amp lm386 mk1 LOCAL 2992
andrsmllr
90.1 × 57.2 mm22 parts2LNo license1
RP2040/RP2350Virgil Screen
da-penguin-guy
20 × 72 mm21 parts2LNo license1
ESP32Speakeasy panel 3x3
W-Floyd
127 × 149 mm17 parts2LNo license1
Amplificador TX
vlc-utn
30 × 30 mm16 parts2LNo license1
AVR/ArduinoSequencer Back
yry-dev
38.1 × 65.4 mm14 parts2LMIT1
Sa818-v carrier
livitup
120 × 40 mm9 parts2LMIT1
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