4 layers76 × 58 mm

GR106768 Buzzer
4ms/openventilator
OpenVentilator project, this repo is just tests and noodlings
273 parts2
Boards in 1 GitHub repository, designed in KiCad, that use the BQ2002CPN by Texas Instruments (0℃~+70℃ 1uA 2V 4V~6V Charging IC Nickel-Metal Hydride Battery、Ni-Cd Battery Support 涓流充电、充电终止、可编程充电电流 PDIP-8 Battery Management ROHS). See how each wires it, with its parts, size, README and files; the BQ2002CPN’s symbol, footprint and pinout are on its own page.

4ms/openventilator
OpenVentilator project, this repo is just tests and noodlings