Being able to measure open circuit battery voltage is great, but it would also be useful to measure current while the light is running. That in turn can map to battery runtime and/or lumens. I wonder if any existing boards can do this, e.g. if they have adc pins connected to the relevant sense resistors. If not, it could be a cool feature in future boards.
Thanks both of you. It was intended as a pure hardware question since I can make the software changes myself in principle. So I wanted to know if there were adc inputs on usable places for this on existing boards, and it sounds like there are not. Oh well.
As for the FET in turbo mode, good point. I’m mostly interested in the lower levels though.
I guess tailcap current measurements with a DMM are good enough for my purposes. It would just be cool if it were built into the light.
