Directly powering from the battery?
Hey everyone, I've been lurking around for a while and am starting to collect components to make my own carpc and have some great plans for some real-time gps nav stuff I'd like to have people help out in the beta testing of.
But I digress...
I was wondering about power supplies. Given that computers take 12v or 5v, and the battery outputs 12v, there are power supplies (M2, etc) that will distribute power, etc etc. What I would like to know is if anyone has considered directly powering their computer from the battery. Obviously you would have to take into account voltage regulation, etc etc so you don't fry stuff when you start the car, when the alternator kicks in, and stuff like that, but I was thinking that it was theoretically possible to hook in using some homemade circutry (which I'm sure someone could come up with to share) and work with that. Thoughts anyone? The main issues I could see with this idea is A: relliability of homebrew stuff, and B: getting power to the motherboard, they tend to have more wires, but if you knew what is what, then why not?
Thoughts, objections, pointers to another thread this has already been addressed? (I couldn't find anything through search)