Though following this forum for a few years, just because i love the idea having a pc in my car, i'm finally ready to build my own. The only problem is, though i have enough experience with computers, im afraid i'll encounter some unforseen problems whilst building this. I was wondering if you guys see any flaws in my design. The reason i use an inverter is because i have a very low powered pc, without a normal motherboard power socket (hp form factor pc). And it kicks a** so i just have to live with the inverter. Should i have a second car battery for this? The Arduino senses if the car is on, and the activates the relays so that the pc/amps won't drain the battery. Please, i love your feedback!