2,590 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.
DEitW
velvia-fifty
100 × 100 mm98 parts2LCC-BY-NC-4.01
Unbalanced Analog Audio Input Board for Small DSP
Gemuesesaft
80 × 40 mm84 parts4LGPL-3.01
AVR/ArduinoInterrupter
iduwhux
79.3 × 97 mm80 parts2LNo license1
Josh Ox Ribbon Synth Mod Osc board
JordanAceto
123.2 × 76.2 mm68 parts2LCC-BY-4.01
Switch
msayad97
128.8 × 109.3 mm53 parts2LNo license1
Power bus
adeboni
420 × 40 mm34 parts2LGPL-3.01
AVR/ArduinoBms test circuit
Wierdwizard2587
94.5 × 58.4 mm27 parts2LNo license1
Anoden Stabi
FordPrfkt
100 × 80 mm24 parts2LNo license1
Audio amp lm386 mk1 REMOTE 2992
andrsmllr
90.1 × 57.2 mm22 parts2LNo license1
RP2040/RP2350Virgil Motor
da-penguin-guy
20 × 114 mm19 parts2LNo license1
Speaker-SAO
AerospaceVillage
24.7 × 98.1 mm5 parts2LNo license1
RISC-VDAC HPA
ooyang0325
120 × 100 mm470 parts4LNo license0
NXPQuad Preamp and 4-Channel Ambisonic Recorder
jdg511
138 × 114 mm242 parts4LNo license0
RP2040/RP2350Imu electrical filled
dcuccia
44.5 × 48.4 mm84 parts4LMIT0
Nref batterypack
cetola
75 × 17 mm83 parts4LNo license0
PHASE-SHIFTER
Desval27
160 × 100 mm79 parts2LMIT0
Cem3340-module
blthree
98.4 × 82.3 mm78 parts2LNo license0
ESP32GSwitch BRAIN - ESP32-S3 hoofdbord
MarkWestbroek
100 × 70 mm65 parts2LMIT0
02 loop env
bmurauer
30 × 100 mm53 parts2LNo license0
NXPRadioMusic F rev2-2
rhinocerose
107 × 20 mm53 parts2LNo license0
Interface
eblade
99.1 × 99.1 mm52 parts2LNo license0
STM32Test rf full
akularya6-del
15 × 31 mm38 parts4LNo license0
Mod Synth LowPassFilter
carl-becker
59.5 × 52.4 mm36 parts2LNo license0
ESP32Esp32node
MadsRudolph
63 × 60.8 mm32 parts2LNo license0
USB IO Panel
Fora888
61 × 128 mm28 parts2LMIT0
ButtonMountingBoard
radionerd
223.5 × 18.4 mm27 parts2LNo license0
Faceplate refilled native
dpaola2
52 × 94.2 mm22 parts2LNo license0
Vinyl adc power
100 × 100 mm18 parts2LNo license0
Left connectors
Scaniox
46.8 × 40.6 mm14 parts2LNo license0
AVR/ArduinoMotorFaderBoard
8-Lambda-8
42 × 100 mm13 parts2LGPL-3.00
GOL RS485 Power Link
gatechipdl
63.5 × 35.6 mm10 parts2LMIT0
Stomp breakout
Network-Direction
29.3 × 25.8 mm6 parts2LNo license0- schematic only · 8 parts
Step counter
carr-james
8 parts2LNo license0 
Gate in
ohmtech-rdi
20 × 19 mm8 parts2LCC-BY-SA-4.0405
SerialResonantFilter
profdc9
72.4 × 72.4 mm66 parts2LNo license221
Psu
shmoergh
250 × 32 mm16 parts2LNo license214
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