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.
ESP32Unicorn
danwerner21
100 × 60 mm6 parts2LNo license50
OTTO-power
cester-ino
72.5 × 23.5 mm45 parts2LGPL-3.049
MegaAV Saturn rev0.2
RIP-Felix
40.4 × 55 mm133 parts2LCERN-OHL-S-2.047
Pwr
mfkiwl
99 × 60 mm61 partsNo license46
Useq
Emute-Lab-Instruments
40.6 × 108 mm29 parts2LNo license45
Mdac attenuator
FutureSharks
45.7 × 52.1 mm28 parts2LGPL-3.045
RP CHG r02
curtisseizert
105.4 × 54.6 mm50 parts4LMIT35
NoiseAMP BAT
Floyd-Fish
70.6 × 45.9 mm19 parts2LGPL-3.035
RP2040/RP2350Toepler plus
niektb
20 × 106 mm112 parts2LCC-BY-SA-4.034
Imac g3 slot loading J22 adapter board
wickerwaka
59 × 28.5 mm4 parts2LLGPL-3.034
Drum-S
Pl0p
74 × 100 mm67 parts2LNo license33
SnackBus PSU
coriolisinstruments
99 × 87 mm34 parts2LNo license33
Main board
Windfisch
98 × 54.4 mm76 parts2LGPL-3.031
Adsr
rabidaudio
29.5 × 112.3 mm72 parts2LMIT31
Arduino shield alt
95.3 × 41.9 mm16 parts2LGPL-3.031
Perfboard
50.8 × 101.6 mm49 parts2LNo license27
USD extender male
newdigate
24.8 × 10.9 mm3 partsMIT27
Puff Main
Thorinair
39.8 × 108.6 mm133 parts2LCC-BY-SA-4.025
Q17 1.2uH inductor
stefaweb
28 × 34 mm3 parts2LGPL-3.025
ESP32Vm129-cpu
mirdej
53.1 × 113.2 mm95 parts4LNo license23
Multi saturation module board b
DIYSynthMNL
40 × 108.5 mm20 parts2LGPL-3.023
AVR/ArduinoT6963-mega adapter
bendecaf
101.6 × 53.3 mm17 parts2LGPL-3.022
Helper jack
30350n
12 × 15.5 mm4 parts2LCERN-OHL-W-2.022
NXPFjöl
hallmar
91.3 × 128.3 mm116 partsNo license21
${PROJECT}
tobigun
45.5 × 21 mm5 parts2LGPL-3.021
ESP32Mbira3c
collaborative-music-lab
128 × 29 mm36 parts2LNo license19
Expander just front
plinkysynth
20.3 × 128.3 mm9 parts2LCC-BY-NC-4.019
PCM5102A
risejohan
32.5 × 25.8 mm25 parts2LNo license17
AVR/ArduinoLights back
telec16
50 × 174 mm99 parts2LNo license16
STM32STM32G491 Prototyping Board
yamamo2shun1
22.9 × 50.3 mm54 parts2LMIT16
TsuraraGB MIDI Adapter
rniwase
25.2 × 31 mm25 parts2LBSD-3-Clause16
125b
motekulo
59 × 75 mm50 parts2LNo license15
RP2040/RP2350HDD Synth Prototype MK4
MaverickUK
100.3 × 69.9 mm40 parts2LCC-BY-NC-4.015
Syntom
Bad-Dog-Designs
71 × 108 mm93 parts2LGPL-2.014
Drboogie
bubbajfett
58.5 × 57 mm59 parts2LCC0-1.014
Wasp 0.2
zero-emission
65 × 85 mm56 parts2LNo license14
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