2,432 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.
- schematic only · 39 partsSTM32
Mini synthesizer kicad
SpeedUp-Tech
39 partsNo license0 - schematic only · 34 partsAVR/Arduino
Ay module
dnewcome
34 partsNo license0 - schematic only · 29 parts
Esp32-retro gaming console kicad
29 partsNo license0 - schematic only · 25 parts
Mosfet amplifier
BhavyaPatel0306
25 partsNo license0 - schematic only · 20 parts
Clock input-3
carr-james
20 parts2LNo license0 - schematic only · 17 parts
ATSMiniBT
funk222
17 partsNo license0 - schematic only · 17 parts
I2s protocol verification
juned-pinjari
17 partsCC-BY-SA-4.00 - schematic only · 16 partsRaspberry Pi
Audio-Tracking-Car
jke48222
16 partsMIT0 - schematic only · 15 partsESP32
Skyler
melsamad
15 partsNo license0 - schematic only · 15 parts
Audio balance indicator
AndacUnal1
15 partsNo license0 - schematic only · 13 partsESP32
Esp32-music player battery
eriksalo
13 partsNo license0 - schematic only · 11 partsESP32
LIM-Vario
loyermael
11 partsGPL-3.00 - schematic only · 11 parts
Guitar-Amp-Project
Joey-Regan
11 partsNo license0 - schematic only · 8 parts
My hero access control
jineshpb
8 partsNo license0 - schematic only · 7 partsESP32
AdmAIre
rxiliv
7 partsCC-BY-NC-4.00 - schematic only · 5 parts
Rouse and chime
afreedma
5 partsCC-BY-4.00 - schematic only · 4 partsESP32
Third-Eye
Kaavya-Sharma21
4 partsNo license0 - schematic only · 3 partsESP32
Anger-Speaker-Recognition-ESP32
HugoMitre
3 partsNo license0 - schematic only · 3 parts
Circuit synth2
aviyeola
3 partsMIT0 - schematic only · 1 parts
Haptic8
hatodove22
1 partsCERN-OHL-P-2.00 - schematic only · 1 parts
WiFi-Microphone-PCB-Streaming-AWS
H-tech-AFAQ-CEO
1 partsNo license0 - schematic only · 1 parts
Riaa preamp
RaresNitu03
1 partsMIT0 
ButtonsLEDs
shanteacontrols
390 × 37 mm82 parts2LApache-2.0956
RP2040/RP2350PicoGUS chipdown
polpo
102.9 × 96.7 mm92 parts4LGPL-2.0800
EleLab v2 Bus150
Chrismettal
150 × 50 mm37 parts2LGPL-3.0528
Headphones flex
strangeparts
41.1 × 25.7 mm32 parts2LMIT493
Panel daisy
ohmtech-rdi
148 × 84.5 mm20 parts2LCC-BY-SA-4.0405
Adapter
jotego
57.5 × 112.3 mm6 parts2LGPL-3.0335
Teensy eurorack breakout
newdigate
110.5 × 111.1 mm73 parts2LMIT258
AddOnB
freeDSP
391 × 45 mm136 parts2LCC-BY-SA-4.0222
AVR/ArduinoRFBitBanger
profdc9
152 × 88 mm226 parts2LNo license221
RP2040/RP2350Brain core
shmoergh
60.5 × 110 mm95 parts2LNo license214
Vca
nickajeglin
45.2 × 146.8 mm79 parts2LNo license207
Vna mm ref
loxodes
115.5 × 66 mm210 parts4LNo license206
NXPGeneSynth Motherboard
theacodes
72.6 × 64 mm14 parts2LApache-2.0177
Super DMG JACK
kamicane
54.8 × 16 mm18 parts2LCC-BY-SA-4.0175
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