2,558 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.
RP2040/RP2350PI SCOPE
niektb
40 × 110 mm97 parts2LCC-BY-SA-4.034
AVR/ArduinoBack prototype
libresmartphone
40 × 100 mm65 parts2LNo license33
Corona tubeBoard
coriolisinstruments
78 × 30.5 mm12 parts2LNo license33
Z80PSG1
lynchaj
100 × 100 mm64 parts2LNo license31
Hp breakout
rabidaudio
20.3 × 14 mm20 parts2LMIT31
Fader board
cester-ino
131.5 × 74 mm10 parts2LGPL-3.031
CVMod4 Main
Thorinair
50 × 108.6 mm85 parts2LCC-BY-SA-4.025
Vm122-masterfader
mirdej
56 × 160 mm74 parts2LNo license23
Radio Shack Mini Speaker work alike
abzman
41.3 × 60.3 mm24 parts2LUnlicense19
ESP32ESP32 MIDI2CV
collaborative-music-lab
71.5 × 36 mm23 parts2LNo license19
MiSTeryShield20kRPiPicoUSB
MiSTle-Dev
100 × 57 mm73 parts2LNo license17
Wavefolder
telec16
25 × 200 mm56 parts2LNo license16
RP2040/RP2350HDD Synth
MaverickUK
136.2 × 86.6 mm6 parts2LCC-BY-NC-4.015
Bmp2
bubbajfett
58 × 46.4 mm52 parts2LCC0-1.014
FC power
zero-emission
110 × 40 mm32 parts2LNo license14
Synmidi Midi
Bad-Dog-Designs
40 × 55 mm12 parts2LGPL-2.014
Confluence
mort13
20.3 × 113 mm69 parts2LGPL-3.012
VCD
banjomasterpete
20 × 128.5 mm43 parts2LNo license12
Minimoog LPF plug in board
JordanAceto
58.4 × 50.8 mm71 parts2LCC-BY-4.011
Feed Forward Compressor
powsplatboom
49.5 × 95 mm49 parts2LNo license11
LowerBuffer
Chrismettal
52 × 40 mm18 parts2LCC-BY-SA-4.011
Finals-Transistor
kholia
57.9 × 38.4 mm13 parts2LCustom license11
DuDad Panel
shannon-greenlight
70.8 × 39.7 mm7 parts2LGPL-3.011
Power Supply THT
BruteClaw
200 × 120 mm49 parts2LGPL-3.010
STM32Dspod u3c5
emeb
26.4 × 41.7 mm49 parts4LMIT10
Bus board
lennartquerter
300 × 40 mm41 parts2LCC-BY-NC-4.010
Simplemix
VincentPeters
94 × 151.3 mm41 parts2LNo license9
Unified jig
ervanalb
49.5 × 39.4 mm4 parts2LNo license8
Adapter soic16
jypma
14.8 × 21.6 mm3 parts2LNo license8
ToggleSwitch wH 1U23HP3x1Bv2
MostlyCoraGrace
116.5 × 39.7 mm13 parts2LMIT6
Synthesizer-IF-Si4112
oresat
34 × 31 mm40 parts4LNo license5
Panel top right
apaleslimghost
193 × 80 mm34 parts2LMIT5
Yaesu-GX16
open-headset-interconnect-standard
27.3 × 38.1 mm5 parts2LCC-BY-4.05
Kailh sw
eigenlucy
10 × 10 mm4 parts2LMIT5
ESP32KXKM esp remote control module
KomplexKapharnaum
48.9 × 70.8 mm20 parts2LMIT4
STM32Electronic Load
Synthron
160 × 100 mm102 parts4LNo license3
Browse boards by part
AMS1117-3.3 1261USBLC6-2SC6 1030RP2040 714W25Q128JVS 441AP2112K-3.3 400TL072 342ESP32-S3-WROOM-1 314TL074 308CH340C 287L7805 28374HC595 258Pico 256USBLC6-2P6 256LM358 233AP2112K-3.3TRG1 21974LS04 204Arduino_Nano_v3.x 201ESP32-WROOM-32 199LM7805_TO220 19774LS245 17874LS138 174SRV05-4 17474LS32 171W25Q128JVSIQ 171