2,278 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.
ESP32OpenDual-Reader
nuerolynx
36 × 124 mm68 parts6LNo license1
RP2040/RP235075-Keyboard
Jyst7
85 × 56 mm67 parts4LMIT1
ESP32Seed pedal
TMANTsmith
54 × 106 mm67 parts4LNo license1
STM32Osfi p
SL-RU
44.8 × 72.5 mm66 parts2LNo license1
EnvelopeFollower
eddcad
138 × 114 mm66 parts2LGPL-3.01
KoloredVerb.core
marcoallegretti
59.6 × 109.5 mm65 parts2LCustom license1
ESP32ESP32-Alarm clock
fehlfarbe
67 × 54 mm65 parts2LMIT1
Compara4
ajjackson
78.7 × 104.1 mm64 parts2LNo license1
BMS
Wierdwizard2587
179 × 44 mm64 parts2LNo license1
ESP32Digiefx board
mesotokyo
50 × 50 mm64 parts4LNo license1
AB-AudioMatrix-6x6
HansAchterbahn
200 × 70 mm62 parts4LCC-BY-4.01
NXPMdt chipdown
andykarpov
94 × 79.6 mm61 parts2LMIT1
Raspberry PiCentauri2350
hridcode
28.2 × 71.3 mm60 parts2LNo license1
ESP32ClearBell V0.2
akoerner-dev
110 × 60 mm57 parts4LMIT1
RP2040/RP2350Sisyphus
Plajta
52 × 42 mm55 parts2LCustom license1
GD32KiCad-GD32F427RE-LTC-SMPTE-no-PHY
vanvught
66.6 × 69.3 mm52 parts2LMIT1
ESP32StreamerBasic
alantrundle
108 × 60.9 mm51 parts2LNo license1
ESP32Esp32-midi processor
andymann
108 × 97.4 mm50 parts2LNo license1
Simple synth
DJ027X
153.6 × 153.9 mm49 parts2LGPL-3.01
T41 2 power amplifier
Greg-R
69.5 × 93 mm49 parts2LGPL-3.01
NXPGuitar build
oo-eric
82 × 156 mm48 parts2LNo license1
ESP32OpenAlarm
Ultikynnys
85 × 72.5 mm48 parts2LMIT1
CrickHit
devanshjoshi08
114.3 × 88.9 mm47 parts2LMIT1
ESP32Geist
ru3iks
80 × 80 mm46 parts2LMIT1
Nano supply
xx0x
162 × 40 mm46 parts2LCERN-OHL-P-2.01
STM32Walky Talky
zmuhammad07
57.1 × 59.6 mm45 parts2LMIT1
MainBoard
j-mcavoy
34.6 × 88.7 mm44 parts2LGPL-3.01
RP2040/RP2350Akash-Chowa-DX
Hasnat4763
98.5 × 70.9 mm44 parts4LMIT1
Kimchi-HiFi lid
adamjvr
65 × 45.4 mm44 parts4LNo license1
ESP32SpeakerSystem
Chill-Sam
100 × 76 mm44 parts2LNo license1
Amplifier
Antonio-Balestrino
177.5 × 76.2 mm44 parts2LApache-2.01
RP2040/RP2350Minimal-Player
tharejarehan0-a11y
139.3 × 69.3 mm44 parts2LNo license1
Nordic nRFKoe Pro v2
yukihamada
45 × 30 mm43 parts4LMIT1
Hyper osci
finnff
70 × 50 mm42 parts2LGPL-3.01
Eurorack psu
jojo-monk
203.8 × 88.6 mm42 parts2LNo license1
STM32Fm radio
snakeye
60 × 17 mm41 parts4LNo license1
Browse boards by part
AMS1117-3.3 1052USBLC6-2SC6 844RP2040 613W25Q128JVS 390TL072 317AP2112K-3.3 312TL074 280ESP32-S3-WROOM-1 267CH340C 246L7805 228Pico 21974HC595 217USBLC6-2P6 203LM358 19674LS04 177AP2112K-3.3TRG1 174ESP32-WROOM-32 168SRV05-4 165Arduino_Nano_v3.x 162LM7805_TO220 15974LS245 15874LS138 153W25Q128JVSIQ 15374LS32 149