if in the online version (1.8.5) of UIFlow I select M5Core2 then under Demo (button top right) I only see the drawing board app, however when I select M5Stack (Base) I see multiple example apps under Demo, including the Weather Station.
In other words, the examples build for M5Stack are in general not compatible with M5Core2 and vice versa.
I guess your options are to either take the M5Stack examples and try to adapt / rebuild them to M5Core2 or get an M5Stack.
ah, ok. Thank you for the clarification.
It never occurred to me to 'reuse' the M5Core2 base plate to complete the stack. It probably won't fit under any of the modules as they are all quite different regarding where components have been placed. Plus most (all?) modules are lacking a connector for the battery anyways. So yes, the question remains as to why it has been designed like that. I guess only M5Stack engineers will now.
Yes, the M5Go Battery Bottom 2 could be a solution. Please be aware though that since it contains additional hardware, it consumes additional energy. (The 10 LEDs alone eat about 1 mA each, even when they are off.)
Maybe it's time to start the 3D printer and design you own?
I don't think this particular parameter has been documented (yet) for the LAN PoE module. It has for some of the newer COMX modules which also can be powered externally.
Another reason, I guess, is, that with M5Stack devices (Fire, Gray, Base) there is no need to switch between output and input as they use a different electrical circuit than M5Core2, which allows the power pin to be both (input and output) at the same time.
As for learning about these parameters - sometimes looking at the Arduino libraries and / or schematic helps figuring out how things are meant to work.