REFERENCE DESIGNS

Open hardware, with the files to prove it.

637 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

637

With a design page

637

KiCad projects

289

Mppt 2420 lc

by LibreSolar

Hackable and open source MPPT solar charge controller

232 53CC-BY-SA-4.0

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

Mppt 1210 Hus board, published by LibreSolar

KiCad source

Power & batteries

Mppt 1210 Hus

by LibreSolar

MPPT solar charge controller with dual USB ports

83 31Custom

Power & batteries

Chpc

by gonzho000

CHPC: Cheap Heat Pump Controller

58 23GPL-3.0

Power & batteries

Battery Health Monitor

by BEEMB

Battery Health Monitor A compact device for monitoring the State of Health (SoH) and State of Charge (SoC) of lithium batteries. It uses the BQ27441 fuel gauge IC and BQ24075 charger IC, along with an ATmega328P microcontroller, to provide real-time battery data and display it through LED bars.

36 11MIT

Boatcontrol board, published by antevens

KiCad source

Power & batteries

Boatcontrol

by antevens

A Relay PCB with a socket for a Raspberry Pi or Nvidia Jetson to control everything on a boat

36 5Custom

Pwm 2420 Lus board, published by LibreSolar

KiCad source

Power & batteries

Pwm 2420 Lus

by LibreSolar

PWM solar charge controller with USB charging port

17 9CC-BY-SA-4.0

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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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