Low power computer for the boat
Thought I'd revive the Boat forum with a question or two.
I'd like to build and install a mini-ITX based computer with a 10 or 12" touch screen on the boat. Unlike a car, however, I don't necessarily have the space issues, but I would have the environmental issues.
Comp would mostly be for navigation, (chartplotting and AIS monitoring) and some system monitoring software while underway. I'd also like to run DVDs etc., wouldn't do that very often underway.
My biggest concern is amp draw @ 12v. From what I can piece together after reading through here and other sites is that I'm looking at a 2.5A - 3A draw with the itx and touch screen. With this type of draw, is really worth going this route or should I just get a laptop with a DC-DC power supply and if I want the touch screen, add that to the laptop?
I do some racing and extensive cruising so draw on the batteries without having to charge the batteries every hour is a concern for me. I've got other systems that are already drawing an average of 5 amps which allow me to run for about 24 hours before I need a recharge.
Anyone have any idea what a laptop draws normally for comparison?