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.
Lightning in a bottle
rolypolytoy
22 × 32 mm20 parts4LUnlicense1
ESP32Eidolon
alaotach
52 × 43 mm19 parts2LNo license1
ESP32Imu midi controller
fouiorqwe
25 × 40 mm19 parts2LMIT1
NorthernStudios-Low-Noise-Amplifier
uzzambutt
60 × 30.5 mm18 parts4LMIT1
Single.Channel.Amp
barajasalfredo13
20 × 60 mm18 parts4LNo license1
Passive av 500
njhollinghurst
57.2 × 29.8 mm18 parts2LCC0-1.01
ESP32H.I.R.O-MDS-0027
Broseph9972
80.1 × 107.1 mm18 parts2LGPL-3.01
ESP32Speakeasy
W-Floyd
41 × 41 mm17 parts2LNo license1
ESP32BarSync
barna81
95 × 60 mm16 parts2LCC-BY-NC-4.01
RP2040/RP2350GoodMorningMachine
TechPioneer
64 × 64 mm16 parts2LNo license1
Ribbon synth
ideocentric
50.8 × 101.6 mm16 parts2LMIT1
ESP32AOILED
aoishik
82.1 × 64 mm16 parts2LNo license1
RP2040/RP2350Sonibox
trappitsch
100 × 110 mm16 parts2LMIT1
AVR/ArduinoLEDMusicVisualizer
VinayBhagavath
61.5 × 50.3 mm16 parts2LNo license1
STM32Airsticks
lizboyer
48.7 × 22.6 mm16 parts2LNo license1
Eurorack-PSU
JacobParent7
108 × 44.5 mm15 parts2LNo license1
ESP32Music kit
YogPanjarale
134 × 75 mm15 parts2LMIT1
RP2040/RP2350Clementine clock
themagicfrog
84.6 × 42.3 mm13 parts2LNo license1
AudioAmplifier-5600x
Rohan317685
40 × 30 mm13 parts2LMIT1
Midibox
lmdsp
256 × 29 mm13 parts2LCC-BY-NC-4.01
RCD Switch Expander
DMRoberts
8.9 × 100.3 mm12 parts2LNo license1
ESP32Spectrum analyzer
JadenS180
74.9 × 100.3 mm11 parts2LMIT1
Vectron sound plus
nickbild
55.9 × 39.4 mm11 parts2LNo license1
T dsp io 2x2 combo
t-dsp
100 × 50 mm11 parts2LCC-BY-NC-4.01
Riscv challenge
FrankBuss
25.4 × 25.4 mm10 parts2LBSD-2-Clause1
Pdu relay
willbicks
55 × 40 mm10 parts2LCERN-OHL-W-2.01
Audio Multiplexer
RICCIARDI-Adrien
146 × 40 mm10 parts2LMIT1
AVR/ArduinoKoi mini mp3-player
fajr-lilypad
63.3 × 128.6 mm9 parts2LNo license1
ESP32WiFi Radio Project
Minall13
111 × 69 mm9 parts2LCC-BY-NC-4.01
NXPMidimania
harrisonmg
101.4 × 65.8 mm9 parts2LNo license1
PAM8301 Circuit
engali94
20 × 11 mm8 parts2LNo license1
FPGA-Accelerated-Personal-Health-Companion-Edge-Disaster-Monitor
novafang23
43.5 × 41.3 mm7 parts2LMIT1
Raspberry PiBluetooth audio tx
Unosoluciones
85 × 55 mm7 parts2LNo license1
Audio attenuator
vrillusions
46.2 × 14.7 mm6 parts2LCC0-1.01
A2E IOU SpeakerReplacement
hkzlab
33 × 55.9 mm6 parts2LCC-BY-SA-4.01
Pcb ae2 soundlink usb c
TimGoll
18.5 × 12.1 mm6 parts2LNo license1
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