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.
Operational-Amplifier-Test-Board
MateoHadzimustafic
49 × 48.6 mm14 parts2LApache-2.00
Nordic nRFSmol audio pad
tobycm
60 × 40 mm14 parts2LMIT0
Audio Player Toy
JustinBSG
40 × 55 mm13 parts2LNo license0
BluetoothSpeakerKeyboard
mpek29
50.4 × 15 mm13 parts2LNo license0
Audio sync circuit
melizalab
45.5 × 30.5 mm13 parts2LNo license0
RP2040/RP2350Hackpad for editing
heyy-Shubham
103.2 × 98.7 mm12 parts2LMIT0
16db speaker attenuator
atoomnetmarc
96.5 × 40.6 mm11 parts2LApache-2.00
AVR/ArduinoAudio shield
deniskokarev
52.1 × 54.6 mm11 parts2LNo license0
NXPMakerSkillsAudioBoard
csdhku
17.8 × 35.6 mm11 parts2LNo license0
Adjustable-Linear-DC-Power-Supply-PCB-Design-
Honyar55
46.5 × 42 mm10 parts2LNo license0
Active-Low-Pass-Filter
Hawk453
80 × 45 mm10 parts2LGPL-3.00
Overnight sensations
digahill
132.5 × 82.5 mm10 parts2LGPL-3.00
Raspberry PiGG-Battle robot
gethin101
156.9 × 61.5 mm9 parts2LNo license0
Lm386-amplifier
Acrop0liX
80 × 60 mm9 parts2LNo license0
Vimclutch hw
blu006
86 × 30 mm9 parts2LGPL-3.00
Max98357I2SAmp
35.8 × 20.6 mm9 parts2LNo license0
ESP32Esp32-ai assistant
JmiguelRamriez
71 × 86 mm8 parts2LNo license0
AVR/ArduinoDryer Buzzer V3
97Cweb
47.7 × 50.8 mm8 parts2LNo license0
NI404Hex
sinitsinmike
108.5 × 36.5 mm6 parts2LNo license0
G350-linux handheld
Abse2001
100 × 124 mm6 parts4LMIT0
PassiveAttenuator
schenkzoola
15 × 100 mm6 parts2LCC-BY-NC-4.00
TL071-Preamp
FrancisStudios
50 × 100 mm5 parts2LNo license0
Led flashlight
akshayparseja
3 parts2LNo license0
400W-Mono-ClassAB-Amplifier
croompool90666-ui
2 parts2LMIT0
500W-Mono-ClassH-Amplifier
1 parts2LMIT0
500W-Mono-ClassAB-Amplifier
1 parts2LMIT0- schematic only · 141 partsESP32
MP3-Gotchi v2
Artisfera
141 partsAGPL-3.00 - schematic only · 141 parts
POGO
jeffmhopkins
141 partsNo license0 - schematic only · 109 partsSTM32
Fm usb mpx tuner
LyonelB
109 partsCERN-OHL-S-2.00 - schematic only · 78 parts
Mezclador de-4-canales y-Amplificador de-3W
ExeMagni
78 partsNo license0 - schematic only · 77 parts
Ak280-schematics
KeatonMasuda
77 partsMIT0 - schematic only · 64 parts
Clacktronics website
clacktronics
64 partsNo license0 - schematic only · 55 parts
DRAM-Sense-Amplifier
antilpiyush89
55 partsNo license0 - schematic only · 52 partsTI MSP430/CC
MSP430handheld hardware
aradanmn
52 partsNo license0 - schematic only · 44 parts
Audio amplifier
Aedan64
44 partsNo license0 - schematic only · 42 partsESP32
Watch
Resteral
42 partsNo license0
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