A little out of my exposure here.. Normally I have just run with straight battery packs or directly from +5v USB ports (power bricks..etc)
I'm not sure what the answer is.. or what is the best search terms here?
But if I wanted to power a project from a battery pack.. UNTIL a usb cable was plugged in.. how would I go about looking into that?
do I use rechargable batteries then? (not sure if I want to just charge, was originally just thinking about an ALT power option/source (no re-charging of anything?)
some sort of way to detect the usb cable was connected right? and then somehow use that source instead of the batter pack?
Not sure how to go about detection? Perhaps there is a little board out there that people use for this or something?
I have in the past created projects that use rechargable Li-Ion batteries.. with a recharge port.. but that is also used a kill switch to cut the project and charge the battery packs..
- you needed your own charger
- not usb related at all
- didnt power the project up, was purely to recharge the battery pack installed inside project.
What terms/solutions should i be looking into?