REFERENCE DESIGNS

Open hardware, with the files to prove it.

487 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

487

With a design page

487

KiCad projects

220

HASwitchPlate

by aderusha

LCD touchscreen for Home Automation

738 129MIT

Keyboards & input devices

keezyboost40

by ChrisChrisLoLo

4x10 ortholinear with an LCD in the middle. Uses the Raspberry Pi Pico, as well as Rust firmware

199 12CC-BY-SA-4.0

ESP8266 Tiny Door And Window Sensor board, published by 8n1

EAGLE source

Microcontroller boards

ESP8266 Tiny Door And Window Sensor

by 8n1

Battery powered door and window sensor with ultra low standby power. Arduino, ESP-12, Reed switch, ATtiny, LDO

173 32No license

Mppt 2420 hc board, published by LibreSolar

KiCad source

Power & batteries

Mppt 2420 hc

by LibreSolar

MPPT charge controller with HS load switch and CAN bus

133 32Custom

KiCad source

Keyboards & input devices

bancouver40

by ChrisChrisLoLo

A 4x10 CFX spaced low-profile mechanical keyboard.

112 11GPL-3.0

KiCad source

Displays & LED

zeta256

by jmacarthur

The Zeta minimal Z80 toggle-switch computer

100 9Custom

ESP WiFiSwitch board, published by biohazardxxx

KiCad source

Displays & LED

ESP WiFiSwitch

by biohazardxxx

WiFi power switch using the ESP8266

55 19GPL-3.0

KiCad source

IoT & home automation

SparkSwitch

by vedderb

Active precharce circuit with optional switch input

51 17No license

Keyboards & input devices

pusheenz40

by ChrisChrisLoLo

A pocket keyboard that uses SMD mouse switches. Low profile and easy to assemble

48 3GPL-3.0

Keyboards & input devices

babbit36

by ChrisChrisLoLo

A 36 key wireless ortholinear keyboard

40 6GPL-3.0

Altium source

Keyboards & input devices

Steezy60

by 4pplet

Steezy60 is a 60% PCB in two versions: one for SMK gen 2 switches one for ALPS-compatible switches. Compatible with standard tray-mount cases. BIG layout compatibility.

30 5Custom

SHINSANWASWITCH board, published by steelpuxnastik

KiCad source

Retro computing

SHINSANWASWITCH

by steelpuxnastik

DIY-friendly photointerrupter microswitch/lamp holder 2-in-1 for generic 100mm Chinese arcade buttons. Enables an OBSA-LHSXF+OBSA-100UMQ-like setup at low cost with generic parts.

14 1MIT

Scart Megadrive 2 12v Cable board, published by KabukiFlux

KiCad source

Interfaces & adapters

Scart Megadrive 2 12v Cable

by KabukiFlux

PCB form Megadrive/Genesis 2 RGB minidin to Scart adapter with 12V DCDC boost (4:3 switching)

11 1MIT

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Microcontroller boards93 Keyboards & input devices66 Retro computing35 Audio & music32 Sensors & data acquisition31 Power & batteries31 Motor control & robotics31 Computers & FPGA31 Other boards30 Displays & LED29 Interfaces & adapters26 RF & wireless24 Test & measurement9 IoT & home automation8 Badges & art boards6 Automotive & vehicles4 Cameras & imaging1

Browse board families

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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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