A USB charger and current probe design.
This project is a board for making any USB-based project LiPo-ready. It contains a LiPo charger circuit and voltage provider (with current sensing) as well as a USB passthrough circuit (also with current sensing). So you can still use USB input for the project while charging the battery.
This is specifically designed to work out-of-the-box with a Raspberry Pi Pico or Pico W, which needs the output blocking diode.
This contains the importable schematic, layout, bom, and gerbers from EasyEDA for direct production by JLCPCB.
For the entire writeup see Make a Usb Charger and Current Tester