Rob Versluis

• WIO G-Semaphore | WIO G-Semaphore PicoW

This solution can be used for the semaphore or WIO-Control.

• https://www.berrybase.de/ladeplatine-fuer-3-7v-liion/lipo-akkus-mit-ausgang-usb-type-c-buchse-loetpads-1000ma

PIN39, VSYS, can handle a range between 1V8 and 5V5, so it can be directly connected to the loader:

Manual:
VSYS is the main system input voltage, which can vary in the allowed range 1.8V to 5.5V, and is used by the on-board SMPS to generate the 3.3V for the RP2040 and its GPIO.

The benefit of a separate loader PCB is that the battery can be switched between loader and PicoW.

• https://gitlab.com/rocrail/rocrail3d/-/blob/master/WIO/picoload.scad

Note:
Mounting the PCB's should be done after the wiring has been soldered.
A drop of hot glue can be used to fix the PCB's in the mounting.