// the take
A pair of open-hardware power supply boards for low-power projects: one for the Raspberry Pi, one for microcontrollers like the ESP32, including battery charging and protection circuitry. This is for people building battery-powered embedded projects who want a vetted PCB design instead of designing power regulation from scratch.
Two real variants for the uC board (original vs. lowcost) let you trade off BOM cost against component count. CI runs kiplot on every push to regenerate gerbers, DRC/ERC reports and schematic SVGs, so the exported fab files stay in sync with the source schematics instead of going stale. The Sphinx docs include actual KiCad style guidelines (clean pin drawing, wire routing do/don't images) rather than just a README, which is unusual rigor for a hobby hardware repo.
No push since mid-2021, so parts like the ESP32-WROOM-32 and LTC4162-L may be harder to source now, and nobody has validated the design against newer component revisions or KiCad versions. There's no bring-up or test report anywhere in the repo — DRC/ERC passing tells you the schematic is consistent, not that a built board actually charges/protects a battery correctly. Project coordination lives on a Discord channel and a Google Drive folder instead of GitHub issues/discussions, so there's no visible record of bugs found or fixes made by anyone who's actually built one.
We read the README, the directory tree and a key source file in October 2026. Nobody pays to be listed. How we judge →