122 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.
Attenuverter
schenkzoola
30 × 100 mm49 parts2LCC-BY-NC-4.05
Waveblaster to midi module adapter
nikitalita
33 × 94.5 mm6 parts2LApache-2.04
Vca
nickajeglin
45.2 × 146.8 mm79 parts2LNo license207
Vna mm ref
loxodes
115.5 × 66 mm210 parts4LNo license206
Module17 HMI
M17-Project
97 × 80.9 mm49 parts4LCERN-OHL-W-2.0129
Ui
shmoergh
284 × 185.5 mm138 parts4LNo license123
Volume daughterboard
LouDnl
52.6 × 18.5 mm28 parts2LGPL-2.0117
Keyboard matrix
oskitone
175.3 × 28.6 mm21 parts2LCustom license114
Frontpanel
westlicht
172.5 × 128.3 mm91 parts2LCC-BY-NC-4.0109
ESP32NextTRS
apuder
145.7 × 107.8 mm93 parts2LGPL-3.074
Base
bread-modular
223.5 × 160 mm163 parts2LMIT65
AVR/ArduinoArduino NMR 5.2
SoukeyCircuits
100 × 75 mm76 parts4LGPL-3.052
Switches
Len42
40.1 × 108.2 mm98 parts2LNo license50
Lcd Daughterboard
dchwebb
68 × 45 mm5 parts2LUnlicense38
!!UNTESTED!!
niektb
50.5 × 128.5 mm124 parts2LCC-BY-SA-4.034
EavesDrum Connector
tobigun
100 × 100 mm21 parts2LGPL-3.021
Sisu SSE-9 debug pogo adapter
briskspirit
19.5 × 11.5 mm7 parts2LUnlicense15
Spring Reverb
powsplatboom
170 × 100 mm313 parts4LNo license11
27C160 Adapter
cristianoag
82.4 × 43.1 mm10 partsNo license10
NXPLowstepper hardware
rafkhan
39.4 × 89.7 mm73 parts4LNo license9
Logiverter
40.1 × 107.1 mm74 parts2LNo license207
Adc344x
98 × 55 mm161 parts4LNo license206
Module17 HMI Back Panel
103 × 30.5 mm4 parts2LCERN-OHL-W-2.0129
Steiner parker vcf
44 × 86 mm70 parts2LNo license123
TRS-IO-M3
134 × 74.2 mm40 parts2LGPL-3.074
ESP3232bit
30.5 × 68.6 mm62 parts4LMIT65
Eurorack SSI2131 VCO
50.5 × 108.2 mm98 parts2LNo license50
RP2040/RP2350Toepler plus
20 × 106 mm112 parts2LCC-BY-SA-4.034
${PROJECT}
45.5 × 21 mm5 parts2LGPL-3.021
Utility board
399.8 × 72 mm242 parts2LNo license11
Surfgen
152.4 × 81.3 mm64 parts2LNo license207
Sequencing ltc2937
58 × 56 mm153 parts4LNo license206
Module17 HMI Front Panel
102.8 × 30.3 mm4 parts2LCERN-OHL-W-2.0129
RP2040/RP2350Midi2cv
83 × 69 mm44 parts2LNo license123
TRS-IO-M1
118.8 × 94 mm36 parts2LGPL-3.074
AVR/ArduinoMidi
30.5 × 68.6 mm62 parts2LMIT65