2,590 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.
STM32Test zero triumph
akularya6-del
15 × 31 mm38 parts4LNo license0
07 io
bmurauer
50 × 50 mm25 parts2LNo license0
Adafruit LSM6DSOX
dcuccia
25.4 × 17.8 mm19 parts2LMIT0
Minimal dac
MarkWestbroek
90 × 90 mm14 parts4LMIT0
Europowerboard
eblade
99.1 × 99.1 mm13 parts2LNo license0
AN AUDIO BREAKOUT
laforestlabs
87.9 × 32 mm13 parts2LNo license0
Input
Fora888
5.1 × 1.5 mm4 parts2LMIT0
Nref batterypack backside
cetola
75 × 17 mm3 parts4LNo license0
Trim
ohmtech-rdi
17 × 19 mm5 parts2LCC-BY-SA-4.0405
Adrf5020 breakout
loxodes
29 × 36 mm18 parts4LNo license206
3-phase lfo
tpcarlson
30 × 128.5 mm70 parts2LNo license106
2040-centered-4x-12deg
jkominek
47 × 48 mm5 parts2LCustom license53
AVR/ArduinoEurorack Dual Envelope Module
Len42
40.3 × 108.2 mm57 parts2LNo license50
18650
libresmartphone
40 × 88 mm3 parts2LNo license33
Vm106-mixbus
mirdej
115 × 47.5 mm6 parts2LNo license23
ESP32ESP32 laptop strip.kicad
collaborative-music-lab
224.5 × 25 mm12 parts2LNo license19
Ecstacy
bubbajfett
59.3 × 36.8 mm41 parts2LCC0-1.014
CEM3320 LPF plug in board
JordanAceto
58.4 × 50.8 mm42 parts2LCC-BY-4.011
Noise Gen THT
BruteClaw
30 × 100 mm24 parts2LGPL-3.010
Motherboard
MostlyCoraGrace
106.7 × 218.4 mm5 parts2LMIT6
RP2040/RP2350AudioMixer LBB
gfm16617
95 × 60 mm21 parts2LNo license3- schematic only · 48 partsSTM32
Silent symphony
jayis1
48 partsNo license3 
Oscillator Carrier Board
99.1 × 99.1 mm34 parts2LCC-BY-4.02
VCA
PancakeLegend
30 × 100 mm15 parts2LGPL-3.02
Midi
Alloyed
91 × 50 mm5 parts2LMIT2
12v power
adeboni
77 × 37 mm7 parts2LGPL-3.01
NXPQuad Preamp and 4-Channel Ambisonic Recorder
jdg511
110 × 84.5 mm161 parts2LNo license0
STM32Test zero victory
15 × 31 mm38 parts4LNo license0
MODULE TESTER
Desval27
127 × 104.1 mm36 parts2LMIT0
Mfos power
blthree
91.5 × 68.7 mm27 parts2LNo license0
Quad dac
90 × 90 mm14 parts4LMIT0
RP2040/RP2350Conductor main
26 × 100 mm14 parts2LNo license0
RP2040/RP2350Adafruit TPS61023
11.4 × 17.8 mm11 parts2LMIT0
Europower
37.9 × 23.9 mm9 parts2LNo license0
Browse boards by part
AMS1117-3.3 1287USBLC6-2SC6 1056RP2040 725W25Q128JVS 444AP2112K-3.3 408TL072 347ESP32-S3-WROOM-1 324TL074 308CH340C 290L7805 29074HC595 267USBLC6-2P6 260Pico 258LM358 237AP2112K-3.3TRG1 22474LS04 207ESP32-WROOM-32 203Arduino_Nano_v3.x 202LM7805_TO220 20174LS245 18474LS138 176SRV05-4 17674LS08 17574LS32 175