REFERENCE DESIGNS

Open hardware, with the files to prove it.

362 published boards whose schematic and layout source is public — KiCad, EAGLE, Altium and EasyEDA projects you can read, fork and build on. Every entry links to the original repository and names its licence.

Boards indexed

362

With a design page

362

KiCad projects

163

Chocofi

by pashutk

Split 36-key keyboard

782 60Custom

KiCad source

Microcontroller boards

Easyduino

by Hanqaqa

Easily dive into different PCB KiCad designs of the most popular microcontroller devboards

745 36CERN-OHL-P-2.0

KiCad source

Audio & music

Haxo hw

by cardonabits

Haxophone, an electronic musical instrument that resembles a saxophone

672 20Custom

KiCad source

Keyboards & input devices

Temper

by raeedcho

a wireless-only split keyboard based on the chocofi

480 35CERN-OHL-P-2.0

KiCad source

Keyboards & input devices

kiibohd Pcb

by kiibohd

PCB and PCB related bits

415 82Custom

Samoklava board, published by soundmonster

KiCad source

Keyboards & input devices

Samoklava

by soundmonster

Generated keyboard

389 201MIT

KiCad source

Interfaces & adapters

OCP2PCIe

by KCORES

OCP Mezzanine card V2.0 to standard PCIe slot adapter design

359 87GPL-3.0

KiCad source

Other boards

MyKiCad

by CRImier

My KiCad boards. Can't be bothered uploading individually anymore, so here you go.

253 33GPL-3.0

Eurorack Pcbs board, published by nickajeglin

KiCad source

Audio & music

Eurorack Pcbs

by nickajeglin

A collection of easy to solder DIY eurorack PCB's

207 14No license

Amiga 2000 EATX board, published by jasonsbeer

KiCad source

Retro computing

Amiga 2000 EATX

by jasonsbeer

An Amiga 2000 PCB in the EATX form factor.

198 23GPL-3.0

KiCad source

Computers & FPGA

zx Sizif 512

by UzixLS

ZX Spectrum CPLD-based clone for rubber case

194 32MIT

Electrical board, published by murexrobotics

KiCad source

Motor control & robotics

Electrical

by murexrobotics

Highly integrated electronics design and printed circuit boards (PCBs) for the MATE ROV Competition. Attempt the impossible.

192 6MIT

pmw3360 Pcb board, published by siderakb

KiCad source

Sensors & data acquisition

pmw3360 Pcb

by siderakb

PMW3360 optical mouse sensor breakout board, support both 3.3V and 1.8V logic

192 18CERN-OHL-P-2.0

Ergo Snm Keyboard board, published by siderakb

KiCad source

Keyboards & input devices

Ergo Snm Keyboard

by siderakb

ErgoSNM is a split ergonomic keyboard integrated with trackball, wireless is in beta

170 12CERN-OHL-P-2.0

Project Hydra Meshtastic Pcb board, published by Hydra-Designs

KiCad source

RF & wireless

Project Hydra Meshtastic Pcb

by Hydra-Designs

A minimalist 1W LoRA PCB design for Meshtastic-device firmware

166 22GPL-3.0

kylemanna Sniffer board, published by kylemanna

KiCad source

IoT & home automation

kylemanna Sniffer

by kylemanna

ESP32 Air Quality Sensor with PMSA003 + BME680 and 1.14" LCD

165 17Custom

KiCad source

Audio & music

Pico Dco

by polykit

Polyphonic Digitally Controlled Oscillator (DCO) controlled by Raspberry Pi Pico PIO

161 16No license

KiCad source

Keyboards & input devices

Pinci

by camrbuss

Super thin split PCB keyboard using rp2040 chips running Rust

129 8MIT

KiCad source

Displays & LED

Jlcpcb Autogenerated Stackups

by gsuberland

Script for extracting stackup templates from JLCPCB and turning them into Altium and KiCAD stackup files

128 17No license

BE6502 Build a 65c02 Computer board, published by tebl

KiCad source

Computers & FPGA

BE6502 Build a 65c02 Computer

by tebl

A PCB being made while watching Ben Eaters "Build a 6502 computer" video series. Includes the computer itself, a standalone slow clock and an Arduino Mega shield for the bus monitor sketch..

128 19Custom

Tokay Lite Pcb board, published by maxlab-io

KiCad source

Microcontroller boards

Tokay Lite Pcb

by maxlab-io

Tokay AI Camera - ESP32 camera development board

126 27CERN-OHL-P-2.0

siderakb pmw3610 Pcb board, published by siderakb

KiCad source

Keyboards & input devices

siderakb pmw3610 Pcb

by siderakb

PMW3610 laser mouse sensor breakout board, support either 1.8V or 3.3V logic

119 17CERN-OHL-P-2.0

pc Kharon 386 board, published by UzixLS

KiCad source

Audio & music

pc Kharon 386

by UzixLS

Tiny IBM PC compatible machine with 386 CPU, integrated VGA and sound.

109 14CC-BY-SA-4.0

Model M Type C board, published by ashpil

KiCad source

Keyboards & input devices

Model M Type C

by ashpil

A modern yet simple Model M replacement controller

94 9GPL-3.0

abn6502 board, published by AndersBNielsen

KiCad source

Computers & FPGA

abn6502

by AndersBNielsen

Solving the global IC shortage by reusing old stuff!

94 14Custom

KiCad source

Computers & FPGA

Pi5 PCIe

by m1geo

A crude reverse engineering of the Pi5 PCIe connector & potential breakout boards.

87 5MIT

Upconverter1v3 board, published by opendous

KiCad source

Other boards

Upconverter1v3

by opendous

Upconverter 125MHz v1.3 - Passive Upconverter Hardware Design for SDR

84 20Unlicense

rc2014 ym2149 board, published by electrified

KiCad source

Retro computing

rc2014 ym2149

by electrified

KiCad schematics and gerbers for a YM sound card for the RC2014. See it in action here: https://www.youtube.com/watch?v=-iLwi9FagFE

78 17Custom

Printable Instruments board, published by 30350n

KiCad source

Audio & music

Printable Instruments

by 30350n

PCB panels for Mutable Instruments eurorack modules

75 14Custom

KiCad source

Keyboards & input devices

KiCAD Keyboard Tutorial

by BathroomEpiphanies

Tutorial on making keyboard PCB layouts in KiCAD

74 12MIT

ESC Development Board board, published by 10x-Aero

KiCad source

Microcontroller boards

ESC Development Board

by 10x-Aero

A 6S AM32-compatible ESC built as a proof of concept for learning how to design an ESC from scratch

74 12No license

KiCad source

Keyboards & input devices

Kikakuka

by buganini

KiCad Workspace / Panelizer / Build Variants / Differ / FreeCAD Bridge for PCB Bending & Assembly

73 4MIT

KiCad source

Badges & art boards

PCB Design

by embeddedalpha

Repository for PCB Design Projects

73 23MIT

KiCad source

Microcontroller boards

rp Micro

by siderakb

Pro Micro/Elite-Pi compatible RP2040 board with USB-C, 8MB flash and up to 25 GPIOs

65 15CERN-OHL-P-2.0

KiCad source

Keyboards & input devices

KBIC65

by b-karl

65% keyboard PCB with ProMicro footprint. Through-hole kit design with focus on wireless.

65 7MIT

KiCad source

Displays & LED

KiVar

by markh-de

PCB Assembly Variants for KiCad

63 4MIT

IP5328P Powerbank Design board, published by YC-Lam

KiCad source

Interfaces & adapters

IP5328P Powerbank Design

by YC-Lam

a USB power delivery powerbank pcb based on IP5328P chip, feel free to use it

58 13GPL-3.0

KiCad source

Interfaces & adapters

DuPAL Board

by DuPAL-PAL-DUmper

This repository contains the KiCad files and the gerber files for the DuPAL boards.

57 10CC-BY-SA-4.0

Air Quality Sensor board, published by roepkefeller

KiCad source

IoT & home automation

Air Quality Sensor

by roepkefeller

DIY air quality monitor: ESP32-C3, 4 Sensirion/Bosch sensors, custom 4-layer PCB, ESPHome firmware with Home Assistant integration.

57 2No license

KiCad source

Microcontroller boards

Sirboard

by vul-os

Open hardware: 107 KiCad PCB designs — SMD-to-THT breakout adapters, ATTiny/ATMega/ESP development boards, and a 39-part sensor line on a common JST-SH connector.

55 17Apache-2.0

KiCad source

Computers & FPGA

zx Sizif Xxs

by UzixLS

Smallest ZX Spectrum clone with real Z80 and FPGA

49 10MIT

Misistemita board, published by galopago

KiCad source

Interfaces & adapters

Misistemita

by galopago

Electronic hardware prototyping system. Solderless, robust and open source. Solves the typical problem of the circuit that works on a breadboard but stops working on a real-world setup. Easy to replicate and compatible with virtually every electronic module.

47 3MIT

KiCad source

RF & wireless

KiwiSDR PCB

by mfkiwl

KiCAD PCB files for KiwiSDR project including active antenna and bias tee

46 40No license

KiCad source

RF & wireless

OpenTheremin V3 Shield

by GaudiLabs

Open Source Theremin Instrument, Shield PCB and Hardware description

45 12GPL-3.0

mist1010 Board board, published by UzixLS

KiCad source

Computers & FPGA

mist1010 Board

by UzixLS

10x10cm PCB variant of MIST FPGA project for G738/G706 enclosure

43 14MIT

USB Mouse board, published by RandomDelta6

KiCad source

Sensors & data acquisition

USB Mouse

by RandomDelta6

A basic USB mouse PCB based on the PAW3526D8-FJY2 Sensor.

43 9CC-BY-SA-4.0

KiCad source

Cameras & imaging

OPSX SX70

by sunyitong

Open-source RP2040 replacement core board for the Polaroid SX-70 instant camera.

40 10GPL-3.0

SolarMeshtasticNode board, published by h0lad

KiCad source

RF & wireless

SolarMeshtasticNode

by h0lad

This is a Meshtastic Solar Node PCB based on the Heltec HT-CT62 and the linear solar charge controller TI BQ25185.

38 2CERN-OHL-S-2.0

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Microcontroller boards73 Keyboards & input devices54 Computers & FPGA30 Retro computing30 Displays & LED23 Audio & music22 Sensors & data acquisition21 Motor control & robotics21 Power & batteries20 RF & wireless20 Interfaces & adapters16 Other boards14 IoT & home automation6 Test & measurement5 Badges & art boards5 Automotive & vehicles1 Cameras & imaging1

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Repository topics

Every project listed here belongs to its author and is linked to its original repository. Licences are read from the repository metadata and summarised for convenience — check the licence file in the project itself before you manufacture or redistribute a design. ProtoFlow does not host, mirror or verify these files. Index last rebuilt 2026-09-21.

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