I’ve been looking for awhile, but can’t find an article. I know it’s been done!
Is there a better way to trip an interrupt for when the power is turned off so some work can be done? This seems like it might just pull a bunch of current and turn it into heat on the 7805. Or does it only pull what is needed by the output?.
Note: there’s other electric items being run off the 12v, so it’s a bit noisy… (lights, etc)