809 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.
ESP32StreamerBasic
alantrundle
108 × 60.9 mm51 parts2LNo license1
ESP32OpenAlarm
Ultikynnys
85 × 72.5 mm48 parts2LMIT1
Nano supply
xx0x
162 × 40 mm46 parts2LCERN-OHL-P-2.01
RP2040/RP2350Minimal-Player
tharejarehan0-a11y
139.3 × 69.3 mm44 parts2LNo license1
Nordic nRFKoe Pro v2
yukihamada
45 × 30 mm43 parts4LMIT1
Eurorack psu
jojo-monk
203.8 × 88.6 mm42 parts2LNo license1
Ignis overdrive
Quee0
65 × 99 mm38 parts2LCC-BY-NC-4.01
AVR/ArduinoHSOD-Home-Security-Of-DOOM
NattDocumented
94.6 × 120.6 mm35 parts2LNo license1
Voltage Processor
JopjeKnopje
25.4 × 100 mm31 parts2LNo license1
Transcribe RS422-fork
cyberboy666
100 × 45 mm31 parts2LNo license1
Speaker
AbdullahHendy
73.8 × 60.1 mm28 parts2LNo license1
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joaln27
56 × 20 mm25 parts2LApache-2.01
Mini-Amplifier
RetroStack
57 × 30 mm23 parts2LMIT1
300W 13.56MHz Class-D RF Power Amplifier
Vickyrrrrrr
80 × 50 mm21 parts2LNo license1
Carrier board
doug7410
140 × 100 mm21 parts2LMIT1
Lightning in a bottle
rolypolytoy
22 × 32 mm20 parts4LUnlicense1
ESP32Eidolon
alaotach
52 × 43 mm19 parts2LNo license1
Passive av 500
njhollinghurst
57.2 × 29.8 mm18 parts2LCC0-1.01
ESP32AOILED
aoishik
82.1 × 64 mm16 parts2LNo license1
AVR/ArduinoLEDMusicVisualizer
VinayBhagavath
61.5 × 50.3 mm16 parts2LNo license1
ESP32BarSync
barna81
95 × 60 mm16 parts2LCC-BY-NC-4.01
RP2040/RP2350Sonibox
trappitsch
100 × 110 mm16 parts2LMIT1
Ribbon synth
ideocentric
50.8 × 101.6 mm16 parts2LMIT1
AudioAmplifier-5600x
Rohan317685
40 × 30 mm13 parts2LMIT1
ESP32WiFi Radio Project
Minall13
111 × 69 mm9 parts2LCC-BY-NC-4.01
Raspberry PiBluetooth audio tx
Unosoluciones
85 × 55 mm7 parts2LNo license1
ESP32Nudge
TheOtherTwinCoder
31 × 42.6 mm4 parts2LNo license1- schematic only · 84 parts
Circuit codex
TheAnalogMaker
84 partsMIT1 - schematic only · 1 partsESP32
Nest audio
spandit69
1 partsCERN-OHL-S-2.01 
Twelve channel
Brunner-neutrino-lab
213.2 × 334.7 mm464 parts4LNo license0
NXPQuad Preamp and 4-Channel Ambisonic Recorder
jdg511
138 × 114 mm298 parts4LNo license0
ESP32Handset
JeremyLakeyJr
66 × 142 mm217 parts4LNo license0
AGBM-02 AA 1-1
AnasSarkiz
131.3 × 72.4 mm200 parts4LCC-BY-SA-4.00
FPGACourant
KrasForge
160 × 100 mm180 parts6LMIT0
STM32ChromaDeck
FBIopeningUPP
160 × 160.1 mm152 parts6LMIT0
AVR/ArduinoDigital synth
giacomogramaglia
165 × 90.1 mm135 parts2LNo license0
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