740 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.
STM32Wagyu
mmalex
25.4 × 106.7 mm95 parts4LCC0-1.09
RISC-VCheep3a
emeb
27.9 × 108 mm84 parts4LMIT9
MICRO-OX Main VCO board
JordanAceto
133.9 × 165.1 mm280 parts4LCC-BY-4.08
ADC-PCM4202
ohdsp
100 × 100 mm237 parts2LTAPR-OHL-1.08
PiGarage
bryce-builds
65 × 56 mm77 parts2LCERN-OHL-S-2.08
C l i k r
cyberboy666
100 × 100 mm41 parts2LGPL-3.08
Digital-Stethoscope
darknight2163
113.1 × 41.3 mm30 parts2LNo license8
Pike
Atarity
87.5 × 27.1 mm14 parts2LNo license8
ULTRATERM
jamdotjar
68 × 65.6 mm13 parts2LCC-BY-SA-4.08
Mt32-pi bay
wiretap-retro
148.1 × 42.1 mm11 parts2LUnlicense8
ADC-PCM4202-SE
100 × 100 mm230 parts2LTAPR-OHL-1.07
BUF-DiffToSE-ADAU1966
100 × 100 mm165 parts2LTAPR-OHL-1.07
STM32GuitarPedalSTM32
GuitarML
60 × 95 mm101 parts4LMIT7
ESP32Slider synth
udu3324
94.6 × 25 mm49 parts2LGPL-3.07
Bisect
90 × 55 mm29 parts2LGPL-3.07
FreeDSP-G
freeDSP
170 × 101 mm367 parts4LCC0-1.06
Music Visualizer
GhanGhan
295 × 155 mm253 parts2LNo license6
Phasor II
84.5 × 108.3 mm178 parts2LCC-BY-4.06
ESP32ChrisBox
TUDA-MUST
78 × 46.3 mm177 parts4LCC-BY-4.06
ResFFB
benregnier
40.1 × 108 mm111 parts2LNo license6
RP2040/RP2350Platform16
lerouxb
112 × 86.3 mm108 parts2LNo license6
STM32Nano-Tek
stefanskotte
51 × 42 mm41 parts4LNo license6
Backporch
semi-simple
53.3 × 32.4 mm25 parts2LApache-2.06
4ch-RF-FE
JohnnyGOX17
249.9 × 94.7 mm275 parts4LMIT5
RP2040/RP2350Synth Labs 065 Hotswap RGB
0xCB-dev
305.1 × 95.5 mm228 parts2LCustom license5
STM32Quad adsr
71.1 × 99.1 mm197 parts2LNo license5
RP2040/RP2350Iosefka motherboard
GlobalSequence
213 × 128.5 mm122 parts2LNo license5
Pedal snow white autowah single
dvhx
60.8 × 116.5 mm112 parts2LGPL-3.05
Pedalshield
inktrap
53.3 × 101.6 mm73 parts2LNo license5
Dac attack
saybur
71.8 × 26 mm62 parts2LCERN-OHL-S-2.05
Attenuverter
schenkzoola
30 × 100 mm49 parts2LCC-BY-NC-4.05
Pdmbrd
jaycordaro
35.2 × 52 mm43 parts4LTAPR-OHL-1.05
HagiwoEurorackMixer
fablabnk
29 × 106 mm24 parts2LNo license5
ESP32ESP32 battery management module
KomplexKapharnaum
173.5 × 192.5 mm828 parts4LMIT4
ESP32TI99 22
danwerner21
244 × 244 mm257 parts4LNo license4
STM32Faderbay
vonmartins
360 × 140 mm174 parts4LNo license4
Browse boards by part
AMS1117-3.3 345USBLC6-2SC6 296RP2040 224W25Q128JVS 135TL072 118CH340C 116AP2112K-3.3 103ESP32-S3-WROOM-1 97TL074 94AP2112K-3.3TRG1 82SRV05-4 73W25Q128JVSIQ 73USBLC6-2P6 70Pico 52L7805 50XC6206P332MR 50MCP73831T-2ACI/OT 49SN65HVD230 49AMS1117-5.0 48ESP32-S3-WROOM-1-N16R8 48LM393 44BME280 43DW01A 43LAN8710A-EZC(QFN32) 43