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

PCB Mini Environmental Sensor

by MbFredys

Compact ESP32-C3 environmental-sensor PCB design using BME280 and SGP40 for temperature, humidity, pressure, and VOC-based air-quality sensing.

13 4Custom

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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

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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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