2,252 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.
Shim amplifier, control
stockmann-lab
343.3 × 120 mm1003 parts4LNo license2
TI MSP430/CCProjet Sound Bar DIY
HodearS
165.7 × 85 mm799 parts4LNo license2
RP2040/RP2350Pandore
filliformes
260 × 110 mm759 parts4LNo license2
STM32Audio daughterboard
Jaxc
90 × 155 mm453 parts4LGPL-3.02
Preamp
bengineer91
160 × 100 mm358 parts4LNo license2
RP2040/RP2350PortaRe0
0Re0-8192
135 × 77 mm349 parts6LNo license2
ESP32SF 01 Compute Board
sandgum
128 × 128 mm332 parts4LNo license2
STM32Fannyadams
svofski
154.9 × 102.9 mm300 parts2LNo license2
RP2040/RP2350Pico-Dev iCE
frohro
100 × 100 mm293 parts4LNo license2
DMH Output PCB 1
DeMarco
48 × 175 mm263 parts2LCC0-1.02
RP2040/RP2350CPTR480-ENGR357 Quadrature SDR
Jeffrey-McCormick
100 × 100 mm244 parts4LMIT2
Seed3-DevKit-Desktop
daisyaudio
197 × 111 mm230 parts2LNo license2
AVR/ArduinoOTTOtact
cester-ino
307 × 131.2 mm224 parts2LGPL-3.02
STM3216-in, 16-out USB <-> ADAT interface
swiszczoo
150 × 56 mm217 parts4LNo license2
Hw udsp card
crsknr
60 × 30 mm211 parts6LGPL-3.02
AmpTwo
ohdsp
100 × 100 mm175 parts2LNo license2
Echo state module
etrautmann
154 × 121 mm166 parts4LNo license2
STM32Dual Slope Generator
JordanAceto
99.1 × 99.1 mm163 parts2LCC-BY-4.02
Radiohat 2.0 Preliminary (not a Hat)
mpvano
85 × 56 mm153 parts4LMIT2
VU-Meter
Synthron
62.5 × 80 mm151 parts2LNo license2
FPGASd2snes
dfederspiel
101.5 × 83 mm147 partsGPL-2.02
Kicad LFO 1 2
promesoft
100 × 100 mm147 parts2LMIT2
NXPRobotTEST-autonomous-
DDSC-Retr0
76.2 × 20.3 mm140 parts6LMIT2
Seed3-DevKit-Eurorack
141.9 × 128.5 mm130 parts2LNo license2
Mixer hp lp channel
samjkent
50.5 × 128 mm123 parts2LNo license2
Output
nathanaelnoir
38 × 100 mm121 parts2LMIT2
STM32GuitarFX
nicholasshort
70 × 85 mm118 parts4LNo license2
4op drum module rev2
vk2gpu
99.1 × 99.1 mm117 parts2LNo license2
Iridium-ADC
ABillBlakely
82.5 × 70 mm111 parts2LGPL-3.02
STM32Mixed-Signal-Guitar-Effects-Pedal
danromero1
60 × 75 mm110 parts4LMIT2
Ogham merged v1.0
keeos-io
50 × 110 mm108 parts2LCustom license2
AVR/ArduinoGiantKnob
mathisschmieder
100 × 70 mm105 parts2LNo license2
ESP32KINK-box
FunDeckHermit
100 × 60 mm103 parts2LApache-2.02
STM32STM32H7 Board
phancak
100 × 50 mm102 parts4LMIT2
STM32Pojet 1A
Kennystflr
60 × 60 mm97 parts4LNo license2
RP2040/RP2350Control board
ljufa
175 × 172.2 mm97 parts2LMIT2
Browse boards by part
AMS1117-3.3 1034USBLC6-2SC6 836RP2040 609W25Q128JVS 388TL072 309AP2112K-3.3 308TL074 274ESP32-S3-WROOM-1 266CH340C 242L7805 224Pico 21874HC595 213USBLC6-2P6 200LM358 19074LS04 175AP2112K-3.3TRG1 173ESP32-WROOM-32 167SRV05-4 165Arduino_Nano_v3.x 15974LS245 156LM7805_TO220 15574LS138 152W25Q128JVSIQ 15174LS32 148