2,390 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.
ULNA-Lband-2S
cfbird
60 × 35 mm68 parts4LMIT0
ESP32Mixxtape
funvill
99.5 × 63.5 mm67 parts2LNo license0
BD2 Mods
Network-Direction
51 × 61.3 mm67 parts2LNo license0
ESP32Aeropod2
eyendamuri
41 × 90.2 mm66 parts4LNo license0
ESP32Mp3player
ILikeMice
55.5 × 54 mm65 parts2LNo license0
Analog audio visualizer
alimleahat
130 × 100 mm65 parts2LNo license0
Super-Melper
shannon-greenlight
216 × 72 mm64 parts2LGPL-3.00
SeniorProj distortion pedal
tomregpala
55 × 87 mm63 parts2LCustom license0
Ym bard 2203
ole00
92.7 × 88.9 mm62 parts2LNo license0
RP2040/RP2350EnvOpenAudio
Envious-Data
21.3 × 68.7 mm62 parts2LGPL-3.00
AVR/ArduinoMultimeter
MadsRudolph
688 × 275.9 mm62 parts2LNo license0
Midi controller pot board teensy
mppowell
287 × 135 mm62 parts2LNo license0
RP2040/RP2350Console.placed
tomassasovsky
99.5 × 99.5 mm61 parts2LGPL-3.00
STM32String-Drum-Synthesizer
AbhiN30
86.8 × 90.8 mm61 parts2LNo license0
Stereo amp module
copperWhispers
65.2 × 45.2 mm61 parts2LCustom license0
Raspberry PiCM5-Carrier-Board-Rev2
AsadImranRafique
120 × 40 mm60 parts6LApache-2.00
RP2040/RP2350AKOR 01
arthurkowskii
114.5 × 162.3 mm60 parts2LNo license0
Summing mixer
pythagorean-comma
122.8 × 50.4 mm59 parts4LNo license0
ESP32Alarm clock
Carabouille
100 × 80 mm59 parts2LNo license0
Power Amplifier with Power Supply
stamatis-mavitzis
136 × 124.5 mm59 parts2LNo license0
RP2040/RP2350UltranetMonitor
arista
72.4 × 87.3 mm58 parts4LNo license0
Guitar interface
DomenLemut
30 × 100.2 mm58 parts2LNo license0
ESP32Hardware projects
AndreyCortez
61.9 × 64 mm57 parts2LNo license0
AVR/ArduinoEuclidean-VCA
cookiemonsternz
107 × 60.6 mm56 parts2LNo license0
Pmg
0x007E
81.3 × 40.6 mm56 parts2LCC-BY-NC-4.00
ESP32Pixel snap voice
zeeman-effect
64 × 86 mm55 parts4LNo license0
RP2040/RP2350Learnboard
bobis1
281.4 × 126 mm55 parts2LNo license0
STM32MiniMPE
adrienles
58.5 × 50.3 mm55 parts4LNo license0
Microchip SAMSamd21g midi tool
newdigate
81.4 × 60 mm54 parts4LMIT0
ESP32Hand System Rev 1
NHuang58
154.7 × 113.4 mm54 parts4LNo license0
Raspberry PiAi orchestrator
ianisms
91.4 × 121.9 mm54 parts6LMIT0
Marble sequencer circuits
felicien-brochu
290 × 51.6 mm53 parts2LNo license0
Buffered-Mult
domesticmouse
30 × 110 mm53 parts2LApache-2.00
Tpa6110-stereo amp input router
manhoosbilli1
25.4 × 86 mm52 parts2LNo license0
RP2040/RP2350Hyperactive radio
activexray
88 × 60 mm52 parts4LNo license0
ESP32Internet radio
Amagami45
97.5 × 97.5 mm52 parts2LAGPL-3.00
Browse boards by part
AMS1117-3.3 1069USBLC6-2SC6 866RP2040 632W25Q128JVS 394TL072 319AP2112K-3.3 313TL074 281ESP32-S3-WROOM-1 268CH340C 249L7805 229Pico 22174HC595 218USBLC6-2P6 206LM358 20074LS04 180AP2112K-3.3TRG1 179ESP32-WROOM-32 169LM7805_TO220 167SRV05-4 165Arduino_Nano_v3.x 16474LS245 160W25Q128JVSIQ 15774LS138 15574LS32 152