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.
STM32Bit Crusher Pedal
JordanAceto
81.3 × 61 mm94 parts2LNo license2
Cv binary seq eurorack
shulltronics
111.3 × 22.4 mm91 parts4LNo license2
ESP32E9X-CAN-BT
Christian-Ristevski
74.8 × 49.8 mm88 parts2LNo license2
Tda8954-btl
phenidone
100 × 48 mm84 parts2LNo license2
Dark Rabbit Chorus
PancakeLegend
50 × 100 mm84 parts2LGPL-3.02
Zeus le rev-2
lopsided98
76.6 × 26 mm82 parts6LGPL-3.02
AVR/ArduinoAbx tayda
cellularmitosis
100 × 100 mm80 parts2LMIT2
Mixer-W-Output-HP
twam
50 × 50 mm79 parts4LNo license2
Usbc synth psu
mattvenn
95 × 35 mm75 parts2LNo license2
Assembly
GarablueX
80 × 120 mm72 parts2LNo license2
HighZ-stereo
Supermagnum
62.5 × 97.5 mm69 parts2LCC-BY-4.02
QMix
WardBenjamin
66 × 39.1 mm67 parts2LNo license2
ESP32Smart-Air-Filter-Project
ZanzyTHEbar
25.4 × 58.9 mm67 partsNo license2
3320-VCF
DIYSynthMNL
30.5 × 112.3 mm63 parts2LNo license2
HackableDelay
benjiaomodular
86.4 × 58.4 mm58 parts2LCC-BY-4.02
Twisted-Listen-Rev2
Triax-Labs
14 × 32.7 mm54 parts4LCC-BY-NC-4.02
Pluralsight Drumkit RevB Driver
jzkmath
100 × 100 mm54 parts2LGPL-3.02
ESP32TUe-CBL-Circular-Electronics
bgb-0
45.3 × 40.1 mm54 parts4LCERN-OHL-P-2.02
DaisyDelayHardware
fablabnk
30 × 128.5 mm53 parts2LNo license2
STM32STM32F411 USB AUDIO DAC
DeflateAwning
63.1 × 21.8 mm50 parts2LCERN-OHL-P-2.02
NXPTeensyDSPDAC
jeroen94704
87 × 47 mm49 parts2LCC-BY-NC-4.02
ESP32Kiki player
alaotach
86 × 109.7 mm42 parts2LNo license2
PicoDAC
Person-0
35.1 × 58.3 mm42 parts4LNo license2
NXPUniversal-Teensy-4.0-Eurorack-Shield
Fora888
17.8 × 101.6 mm41 parts2LNo license2
Kicad pmod i2s2
s59mz
20.3 × 49.3 mm40 parts2LGPL-3.02
High-Current-Sourcing-Sine-Wave-Generator
omkar-nitsure
121.6 × 63.7 mm40 parts2LNo license2
5V PCM5102 interface for Raspberry PI (PLL Operation)
6r1d
65.6 × 34.1 mm38 parts2LMIT2
ESP32ULX4M-CM4-HAT
intergalaktik
65 × 56 mm37 parts4LGPL-3.02
AVR/ArduinoTms5220-atmega
madworx
74.9 × 48.3 mm32 parts2LNo license2
AVR/ArduinoArduino-MidiDmxBridge
chrisneukam
65 × 47 mm29 parts2LApache-2.02
MagicQuartz-TechDemo
sebmate
82.6 × 50.2 mm29 parts2LNo license2
Guitar-Amp
james-wren
184.5 × 61 mm28 parts2LMIT2
PCB AD9833 ADSR Featherwing
CedarGroveStudios
50.8 × 22.9 mm25 parts2LMIT2
AD9833 ADSR FeatherWing
50.8 × 22.9 mm25 parts2LMIT2
Joselito
abierto-cc
34.9 × 70.4 mm25 parts2LNo license2
AudioAmpEELv2
ADolbyB
81.5 × 44 mm25 parts2LNo license2
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