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.
VCO
PancakeLegend
50 × 100 mm41 parts2LGPL-3.02
Supply board
swiszczoo
150 × 56 mm38 parts2LNo license2
LT3042 breakout
ljufa
10.2 × 14.6 mm7 parts2LMIT2
Kosmo Format Front Panel - 5 cm
DeMarco
50 × 200 mm3 parts2LCC0-1.02
Amplifier
msayad97
162.3 × 144.3 mm152 parts4LNo license1
Zoetrope
velvia-fifty
30 × 128.5 mm125 parts2LCC-BY-NC-4.01
AVR/ArduinoLineinterrupter
iduwhux
74.4 × 99.3 mm85 parts2LNo license1
Balanced Analog Input Board for SmallDSP
Gemuesesaft
110 × 60 mm85 parts4LGPL-3.01
Josh Ox Ribbon Synth Sample and Hold Board
JordanAceto
40.6 × 203.2 mm69 parts2LCC-BY-4.01
Ecg
adeboni
10 × 100 mm41 parts2LGPL-3.01
NXPAFPI Device V1.1
Wierdwizard2587
85 × 45 mm28 parts2LNo license1
Protection
FordPrfkt
80 × 50 mm25 parts2LNo license1
Audio amp lm386 mk1 LOCAL 2992
andrsmllr
90.1 × 57.2 mm22 parts2LNo license1
RP2040/RP2350Virgil Screen
da-penguin-guy
20 × 72 mm21 parts2LNo license1
ESP32Speakeasy panel 3x3
W-Floyd
127 × 149 mm17 parts2LNo license1
Amplificador TX
vlc-utn
30 × 30 mm16 parts2LNo license1
AVR/ArduinoSequencer Back
yry-dev
38.1 × 65.4 mm14 parts2LMIT1
Sa818-v carrier
livitup
120 × 40 mm9 parts2LMIT1
DuDad Panel
shannon-greenlight
60.6 × 39.7 mm5 parts2LNo license1- schematic only · 19 parts
Sheet Title
DIaLOGIKa-GmbH
19 parts2LMIT1 
RISC-VDAC-HPA — 120 × 100 mm output macro study
ooyang0325
120 × 100 mm478 parts4LNo license0
NXPQuad Preamp and 4-Channel Ambisonic Recorder
jdg511
138 × 114 mm242 parts4LNo license0
Hdmi edp2
cetola
43.5 × 32.5 mm93 parts4LNo license0
STM32Mixed signal Board Rev E
Akhilesh-design-02
47.1 × 45.4 mm88 parts4LNo license0
RP2040/RP2350Imu coupled working
dcuccia
44.5 × 48.4 mm84 parts4LMIT0
Vco4069
blthree
99.1 × 99.1 mm84 parts2LNo license0
ADSR
Desval27
160 × 100 mm82 parts2LMIT0
GSwitch LOOP8-SH - 8x relaisloop compact (schroefklemmen)
MarkWestbroek
150 × 44 mm69 parts2LMIT0
04 diode ladder vcf
bmurauer
30 × 100 mm66 parts2LNo license0
Vco
eblade
99.1 × 99.1 mm60 parts2LNo license0
808 bass drum1
rhinocerose
14.9 × 89.5 mm56 parts2LNo license0
STM32Speaker
sean618
56.5 × 25 mm40 parts2LMIT0
Math-Module
carl-becker
60 × 60 mm40 parts2LNo license0
STM32Test rf clean corridor
akularya6-del
15 × 31 mm38 parts4LNo license0
USB-C 3A PSU
Fora888
15.2 × 99.1 mm32 parts2LMIT0
Power Delivery
Network-Direction
69.9 × 32.8 mm31 parts2LNo license0
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