I complained about that part too, and 8bitdo doesn't seem receptive..
I mentioned it to them and they were very helpful... They specifically sent me a beta firmware for the reciever that allows me to toggle between Switch mode and Xinput mode by holding Select+Y or Select+X respectively.
I'll see if I can find the file ...
I just got back from a business trip to China also. The high proportion of EVs, particularly in the southern cities like Guangzhou and Shenzhen really stood out to me, and many of them (particularly from BYD) looked really, really nice. They seemed less prominent in the more northern part of the country (e.g. Shenyang, Beijing), but even there I'd say they're more common than in the UK.
It was a real eye opener
Could you do similar to diagram 2, but instead of an N-FET use a P-FET between the battery and first resistor in the potential divider?
~~Add a gate pull up resistor to source to ensure the FET is off by default, have the micro pull the gate down to take a measurement. You'll probably need to add another resistor on the control pin to 0V to limit the voltage there also, but those two can be much much higher values to really limit current. Or use a zener/TVS diode instead of second resistor to clamp the voltage instead of dividing (more robust).~~
Switch it with an NFET
The micro will see 0V or divided/clamped battery voltage on the measurement pin.
If the average person cut out 100% of their carbon emissions for the rest on their life, they'd save, on average, the amount of CO2 that industry creates in ~1 second. Our personal emissions are but a drop in the ocean in the grand scheme. Change is best brought about by voting both metaphocally with our wallets and literally with our ballot papers.
I have the Bluetooth + 2.4G one with hall effect sensors and paddles (with the 2.4G/Bluetooth switch on the back and included 2.4G receiver in the dock).
I didn't realise the dedicated 2.4G one received Bluetooth later, but the firmware was for the 2.4G receiver, not the controller, which I'd assume to be the same one regardless? That said, it'd only allow you to use "Switch Pro Mode" and "Xinput Mode" when connected via 2.4G to the receiver. Bluetooth mode behaviour will be unchanged... But given the choice I'm not sure why anyone on PC would use Bluetooth instead of the 2.4G anyway, unless they're not using the dock with that particular computer...
All that aside though, my initial comment was to indicate 8bitdo were actually quite helpful when I reached out to them, in contrast to the person I was replying to... To answer OPs actual questions:
Bluetooth mode outputs as a Switch Pro controller by default, so a lot of games on PC won't recognise it unless you use Steam Input or some other translation layer to convert to Xinput. There are numerous applications to do it, but Steam is probably easiest and most accessible. To set the paddles etc You can download the Ultimate Software on your Phone or the PC to set the back paddles and tweak settings.
I'd recommend playing around with some first person shooters using the Gyro. Steam specifically has a Flick Stick-like mode that is a really fun way of using the Gyro in FPS games like DOOM. You angle the stick to the direction you want to face, and then use gyro to aim up/down and make fine corrections. E.g. to snap turn 180degrees, just flick the right analogue stick down. Works brilliantly when you (eventually) get the hang of it, it's so much faster.