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.
AVR/ArduinoKicad lin ctrl
s59mz
183 × 110 mm94 parts2LGPL-3.01
ESP32Speaker pod
MostlyBuilds
86.2 × 50.2 mm93 parts2LCC-BY-SA-4.01
Phaser
eddcad
138 × 83.3 mm93 parts2LGPL-3.01
Raspberry PiHACK CLUB RELATED
Studented0
88 × 155 mm93 parts4LMIT1
RP2040/RP2350MicroNES
bchelf
101.6 × 70 mm92 parts4LNo license1
ESP32Koganeee
Sujay-Golla
66 × 71 mm92 parts4LMIT1
Tremolo
138 × 100.9 mm90 parts2LGPL-3.01
Analog parametric equalizer
Mohit623148
326.3 × 76 mm88 parts4LMIT1
VAMP
syntonos
217.9 × 60 mm88 parts4LGPL-3.01
STM32Mseq
MF-Room
135.3 × 78.4 mm87 parts2LCERN-OHL-S-2.01
ESP32Iot esp32-hw
sourabh-devrukhkar
89.9 × 52.8 mm85 parts4LMIT1
STM32Audio Watermark Generator
kristiangoystdal
83 × 41 mm84 parts4LNo license1
Tyrian distortion
cdelmoral
117.5 × 82.1 mm84 parts2LNo license1
Microchip SAMTsunamiPi
robertsonics
65 × 56 mm84 parts2LNo license1
RP2040/RP2350Panel
da-penguin-guy
100.1 × 121.4 mm84 parts2LNo license1
RP2040/RP2350SumaShield
hugelton
83 × 99 mm83 parts2LMIT1
K PA Protec
F6ITU
102.5 × 75 mm83 parts2LNo license1
OctaveEnv
hsetlik
100 × 65 mm82 parts4LNo license1
SYNTH
svenssonjoel
83 × 54 mm81 parts2LGPL-3.01
RP2040/RP2350Mechmidi1
konsumer
84.5 × 126.3 mm81 parts2LNo license1
RP2040/RP2350Zero stomp
relic-se
85.2 × 98.9 mm80 parts2LGPL-3.01
Mini-4ch mixer
ArrestedLightning
81.9 × 64 mm80 parts2LCC-BY-4.01
ESP32ESP32-C3-IoT-Embedded-Custom
SarthakDas2006
85.7 × 58.1 mm80 parts4LNo license1
RP2040/RP2350JukeBox
FriendTeamInc
100 × 100 mm79 parts2LNo license1
AVR/ArduinoAudio Slice
LOEWE-emergenCITY
100 × 100 mm79 parts2LNo license1
TorxHAT
RobotStudyCompanion
65 × 56.6 mm78 parts2LCustom license1
USB L Band TX
antonjan
53.3 × 40.6 mm78 parts2LGPL-3.01
PICIntel wildcard-88-motherboard
skiselev
116.8 × 165.1 mm75 parts2LCERN-OHL-S-2.01
FPGAECP5 BGA381 FT2232HQ FIFO EXT
gildobjanschi
64.4 × 54.6 mm74 parts4LMIT1
RP2040/RP2350Crossfire mk1
lightsource-nz
59.6 × 57.8 mm73 parts2LNo license1
AVR/ArduinoRtty transmitter
bazsimarkus
120 × 60 mm71 parts2LNo license1
STM32Ribbon Controller Main Board
JordanAceto
147.7 × 31.8 mm71 parts4LCC-BY-4.01
Pulsephone main board
pulseopen
70.5 × 128.5 mm70 parts4LGPL-3.01
Compressor pedal
jakeson21
60.5 × 52.8 mm69 parts2LNo license1
STM32Analog noise
BBBSnowball
12.7 × 45.6 mm68 parts4LNo license1
ESP32OpenDual-Reader
nuerolynx
36 × 124 mm68 parts6LNo license1
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