2,020 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.
SNES-Userport-Adapter
pdaehne
59 × 47 mm6 parts2LCC-BY-NC-4.09- schematic only · 11 parts
LYME101
milar111
11 partsMIT9 
MICRO-OX Main VCO board
JordanAceto
133.9 × 165.1 mm280 parts4LCC-BY-4.08
ADC-PCM4202
ohdsp
100 × 100 mm237 parts2LTAPR-OHL-1.08
AVR/ArduinoMainboard
jypma
39.4 × 108 mm122 parts2LNo license8
AVR/ArduinoDE10Jamma
MisterJamma
114.6 × 83.4 mm98 parts2LNo license8
PiGarage
bryce-builds
65 × 56 mm77 parts2LCERN-OHL-S-2.08
Rgba
fu5ha
40 × 22 mm65 parts4LCERN-OHL-S-2.08
Multi midi
ReflexCreations
101.2 × 71.1 mm59 parts2LMIT8
SoundX
SukkoPera
60.8 × 100 mm44 parts2LNo license8
C l i k r
cyberboy666
100 × 100 mm41 parts2LGPL-3.08
Rotten
KamikazeVildsvin
56.5 × 61.6 mm39 parts2LGPL-3.08
Digital-Stethoscope
darknight2163
113.1 × 41.3 mm30 parts2LNo license8
SolarSynth digilog
dusjagr
59.9 × 90 mm29 parts2LCERN-OHL-P-2.08
RP2040/RP2350Pico player
jstanley0
57.9 × 65.5 mm23 parts2LMIT8
SFH203 photodetector
TU-Darmstadt-APQ
20 × 30 mm18 parts2LCERN-OHL-1.28
Pike
Atarity
87.5 × 27.1 mm14 parts2LNo license8
ULTRATERM
jamdotjar
68 × 65.6 mm13 parts2LCC-BY-SA-4.08
Mt32-pi bay
wiretap-retro
148.1 × 42.1 mm11 parts2LUnlicense8
Rf agent
cholan2100
35 × 20 mm4 parts2LNo license8
Microchip SAMOSSW - Open Scart Switch - Main
BinaryS010
401.6 × 130.1 mm310 parts4LGPL-3.07
STM32KicadJE uP DAC
promesoft
100 × 100 mm269 parts2LNo license7
ADC-PCM4202-SE
100 × 100 mm230 parts2LTAPR-OHL-1.07
Synharmonium
amminadabz
291.3 × 154.8 mm187 parts2LGPL-3.07
BUF-DiffToSE-ADAU1966
100 × 100 mm165 parts2LTAPR-OHL-1.07
LNA 1MHz
H4w4k4
102 × 82.6 mm135 parts4LNo license7
STM32GuitarPedalSTM32
GuitarML
60 × 95 mm101 parts4LMIT7
Drone o tron 1 0Rev1
koNrand
161.8 × 100 mm99 parts2LNo license7
Nordic nRFTympan Rev F
Tympan
38 × 74 mm86 parts4LCERN-OHL-P-2.07
Current dr amp
werediver
100 × 90 mm83 parts2LNo license7
IQ Modulator
antonjan
39.5 × 46 mm72 parts2LGPL-3.07
ESP32WLED-Controller
LostInCompilation
100 × 100 mm63 parts2LNo license7
ESP32Slider synth
udu3324
94.6 × 25 mm49 parts2LGPL-3.07
ESP32Mlehaptics
lemonforest
37.3 × 27.8 mm29 parts2LGPL-3.07
Bisect
90 × 55 mm29 parts2LGPL-3.07
AVR/ArduinoArduino-Nano-FM-Radio-Si4703
TeknoTrek
95.5 × 104.7 mm15 parts2LNo license7