2,278 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.
YM3812-dual synth
89Mods
99.8 × 44.2 mm40 parts4LApache-2.01
EMLD
UEPro
90 × 43 mm38 parts2LNo license1
Ignis overdrive
Quee0
65 × 99 mm38 parts2LCC-BY-NC-4.01
AVR/ArduinoTransmitter
damianmoore
63 × 40.6 mm37 parts2LNo license1
Bone xl distortion
delboy1978uk
50 × 50 mm35 parts2LNo license1
AVR/ArduinoHSOD-Home-Security-Of-DOOM
NattDocumented
94.6 × 120.6 mm35 parts2LNo license1
RP2040/RP2350Momentum panel
rjhsun
127.9 × 77.3 mm34 parts2LNo license1
StompFork
jurihock
99.1 × 50.8 mm34 parts2LGPL-3.01
Sensing & Power management
MartinBraquet
143 × 82 mm32 parts2LMIT1
Audio preamplifier power supply
flavian112
106.7 × 43.2 mm32 parts2LNo license1
Calcifer
lowdrant
65 × 56 mm32 parts2LGPL-3.01
TAS5825M
TemuWolverine
43.2 × 30.1 mm32 parts2LMIT1
I2S AUDIO DAC
rick0x00
42 × 49.5 mm32 parts2LApache-2.01
Voltage Processor
JopjeKnopje
25.4 × 100 mm31 parts2LNo license1
Simple audio amplifier
TheElectronicMusicProject
80 × 50 mm31 parts2LNo license1
Transcribe RS422-fork
cyberboy666
100 × 45 mm31 parts2LNo license1
Audio Amp BE Elec
JB-toriel
50 × 50 mm30 parts2LNo license1
FSC-BT1038B-Barebones-Breakout
fsanzeni
59.9 × 45.2 mm29 parts4LNo license1
RP2040/RP2350PicoTracker th
alexbonhomme
91.4 × 110 mm29 parts2LNo license1
Speaker
AbdullahHendy
73.8 × 60.1 mm28 parts2LNo license1
QA403-Impedance-Fixture-V2
excitonlabs
74.5 × 44 mm27 parts2LCC0-1.01
LM386 BTL
danchouzhou
44.5 × 44.5 mm26 parts2LNo license1
Parla v0-revB
piruetasxyz
50 × 50 mm25 parts2LMIT1
ESP32Magic seashell speaker
fajr-lilypad
47.8 × 47.8 mm25 parts2LNo license1
Cc-110-usb
matt-kosman
20.3 × 29 mm25 parts2LCC-BY-NC-4.01
${TITLE}
joaln27
56 × 20 mm25 parts2LApache-2.01
AVR/ArduinoZ80P600
Flat-Labs
24.2 × 51.6 mm24 parts2LNo license1
Mini-Amplifier
RetroStack
57 × 30 mm23 parts2LMIT1
ESP32Kibo
rawrrudy
58.5 × 55 mm22 parts2LMIT1
RP2040/RP2350PIPICO RELOCATOR V03
AtlasFPGA
62.9 × 78.4 mm22 parts2LNo license1
STM32Page turner
joelspadin
32 × 20 mm22 parts4LMIT1
RP2040/RP2350MP3-Player
tomstraka01-git
70.5 × 76.6 mm22 parts2LMIT1
ESP32Self balancing robot v2
arthurlawson
80 × 66 mm21 parts2LMIT1
Carrier board
doug7410
140 × 100 mm21 parts2LMIT1
300W 13.56MHz Class-D RF Power Amplifier
Vickyrrrrrr
80 × 50 mm21 parts2LNo license1
Lightning in a bottle
rolypolytoy
22 × 32 mm20 parts4LUnlicense1
Browse boards by part
AMS1117-3.3 1052USBLC6-2SC6 844RP2040 613W25Q128JVS 390TL072 317AP2112K-3.3 312TL074 280ESP32-S3-WROOM-1 267CH340C 246L7805 228Pico 21974HC595 217USBLC6-2P6 203LM358 19674LS04 177AP2112K-3.3TRG1 174ESP32-WROOM-32 168SRV05-4 165Arduino_Nano_v3.x 162LM7805_TO220 15974LS245 15874LS138 153W25Q128JVSIQ 15374LS32 149