2,432 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.
Fjol top
hallmar
91.3 × 110.7 mm134 parts2LNo license21
EavesDrum Connector
tobigun
100 × 100 mm21 parts2LGPL-3.021
SC14CVMDECT Devboard Audio Header
funkeleinhorn
30 × 50 mm27 parts4LCERN-OHL-S-2.020
Hubble lens
wntrblm
100 × 100 mm9 parts2LCC-BY-SA-4.020
Expander just back
plinkysynth
20.3 × 104.3 mm59 parts2LCC-BY-NC-4.019
ESP32Mbira2
collaborative-music-lab
108 × 18 mm37 parts2LNo license19
Retrospector Controls
dchwebb
60 × 110 mm32 parts2LNo license18
RP2040/RP2350Misterydev20k
MiSTle-Dev
90 × 67 mm162 parts2LNo license17
Control board VCF-3350-8
polykit
42 × 78.5 mm21 parts2LNo license17
Gameboy DMG Headphone Jack
wiretap-retro
38 × 16.8 mm7 parts2LCC0-1.017
KVL STK
yamamo2shun1
222.4 × 77.5 mm227 parts4LMIT16
AVR/ArduinoLights
telec16
50 × 200 mm115 parts2LNo license16
Hubble lens
100 × 126 mm22 parts2LCC-BY-SA-4.016
Podal 1590b
motekulo
54 × 60 mm56 parts2LNo license15
RP2040/RP2350HDD Synth prototype MK3
MaverickUK
119.4 × 97.4 mm45 parts2LCC-BY-NC-4.015
Rom cart
ThroatyMumbo
90.8 × 60 mm10 parts2LMIT15
Sisu SSE-9 debug pogo adapter
briskspirit
19.5 × 11.5 mm7 parts2LUnlicense15
Synclap
Bad-Dog-Designs
71 × 108 mm101 parts2LGPL-2.014
Triple wreck
bubbajfett
59.7 × 62 mm67 parts2LCC0-1.014
Alim
acmo0
84.5 × 65.3 mm60 parts2LGPL-3.014
Wasp 0.5
zero-emission
50 × 80.5 mm57 parts2LNo license14
Cem3340
jhitesma
100 × 70 mm31 parts2LMIT14
CW Keyer FrontPanel
softerhardware
100 × 50 mm4 parts2LNo license14
Control board for ADSR-3310-8
27 × 106 mm11 parts2LNo license13
Teletype-180824
mort13
88.9 × 109.9 mm172 parts4LGPL-3.012
ESP32Stencil
mikelawrence
52.5 × 59.7 mm97 parts4LCERN-OHL-P-2.012
DualValmorRearBoard
banjomasterpete
60 × 55 mm65 parts2LNo license12
STM32MidiMonger
40 × 110 mm56 parts2LNo license12
Spring Reverb
powsplatboom
170 × 100 mm313 parts4LNo license11
PedalMeetingHeadphoneAmp RevD
kanengomibako
100 × 80 mm121 parts2LUnlicense11
Haible 2040 LPF plug in board
JordanAceto
58.4 × 50.8 mm96 parts2LCC-BY-4.011
Tm1638-test
FrankBuss
100 × 100 mm80 parts2LNo license11
RP2040/RP2350Rp2350-decoder
mikesmitty
19.9 × 8.8 mm67 parts6LCERN-OHL-P-2.011
Panel
shannon-greenlight
70.8 × 128.4 mm55 parts2LGPL-3.011
YOU WHAT
Chrismettal
52 × 63 mm47 parts2LCC-BY-SA-4.011
Scoppy control
ijnekenamay
30.4 × 100 mm36 parts2LNo license11
Browse boards by part
AMS1117-3.3 1069USBLC6-2SC6 866RP2040 632W25Q128JVS 394TL072 319AP2112K-3.3 313TL074 281ESP32-S3-WROOM-1 268CH340C 249L7805 229Pico 22174HC595 218USBLC6-2P6 206LM358 20074LS04 180AP2112K-3.3TRG1 179ESP32-WROOM-32 169LM7805_TO220 167SRV05-4 165Arduino_Nano_v3.x 16474LS245 160W25Q128JVSIQ 15774LS138 15574LS32 152