View Single Post
Old 04-22-2008, 01:52 PM   #8
midiwall
Maximum Bitrate
 
Join Date: May 2006
Location: Seattleish, WA
Posts: 823
Quote: Originally Posted by johnk View Post
Well, I wish it would go to hibernate after a certain amount of time. The problem is that it shuts down completely (big difference). I guess you just need the new Sleep feature in Vista for that (option to save hibernation data when it goes to standby, so that if the power is cut it can resume from the hibernation file).

The MP3Car guys tell me that the G4 shuts down when the battery reaches a certain voltage minimum, so I don't think a registry change will help.

I guess on the weekends I just need to try to remember to hit Suspend from the menu instead of just shutting off the car. Just very frustrating that a much cheaper head unit doesn't have this limitation... I would have gone with something else if they supported FLAC.

Man, I'm sorry.. I keep forgetting that we're talking about the G4 so I forget the solutions that the CarPC people use/take for granted.

We use one of these:
http://store.mp3car.com/category_s/22.htm

Those are power supplies that have a hook into the car battery full-time, and another into the ignition. The board is setup such that IT controls the power to the motherboard, the ignition line is just a monitor tap. When the ignition goes off, it pulses the power button on the motherboard, which we generally configure to be "hibernate". It then waits a programmable amount of time before it actually cuts the power. You set this timeout to be long enough to allow the CarPC to make it all the way to hibernate. The board can also be configured to be smart and actually watch for the MB to power down.

fwiw, I'm using the the M1-ATX 90. Works like a champ. I dunno what the external inputs look like on the G4, or how much you can get to the motherboard. To use this controller, I think you'd only have to hack into the "power" switch on the G4, or whichever electrical point you can to set it into hibernate.

The "Micro Shutdown Controller" works the same way, and may be a better option since you don't really need a full power supply:
http://store.mp3car.com/category_s/80.htm
__________________
:: Mark
midiwall is offline   Reply With Quote