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Thread: Sorry if this is a repeat - I am new, and probably blind

  1. #1
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    Sorry if this is a repeat - I am new, and probably blind

    so, I have the whole computer part of the carputer worked out, and the audio worked out.... I am an IT guy, and thus knowledgable about computers, and I know a fair enough about electronics and cars....
    only one real question: which power supply should I go with?
    I need a PSU that can drop the computer into hybernate (or suspend -- whatever you want to call it) when I turn off the car, and turn it back on when the car is turned on.... Of course, correct me if I am wrong, but the computer should be able to sit in hybernate for a long god-damn time while the car is off, without killing the battery -- my laptop can be asleep for 1 week and only loose a precent on it's battery.... a car battery is bigger, and my car is driven a lot... so I am acting upon the assumption that as long as the PSU can do that, I should be alright.... right? Any help would be great.

  2. #2
    FLA gospeed.racer's Avatar
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    Yea...do a search for Opus...and then buy one here They are the end all power supply (unless you want to build a kit) and will survive a crank to boot
    2005 Ford Focus ST

  3. #3
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    thanks. I was assuming that is what I wanted from the looks of it, I just wanted somebody to confirm it for me.

  4. #4
    Variable Bitrate RS3RS's Avatar
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    Yup, OPUS is what you want

  5. #5
    Constant Bitrate
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    >>Yea...do a search for Opus...and then buy one here They are the end all power supply (unless you want to build a kit) and will survive a crank to boot



    kinda funny..... will survive crank to boot.....will survive crank also while booting... idk, it brought a smile to my face...simple pleasures for simple minds

  6. #6
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    I am right in assuming that I can put the computer in sleep when the car turns off and it won't hurt the battery unless it is left for an extended period of time (several days / weeks), right?

    Oh, and if I go with this screen: http://www.mp3car.com/store/product_...products_id=48

    where do you guys think would be the best place to mount the computer that would hide the cables well (even if I have to run a lot of them)? maybe in the trunk? (it's a mazda3i 4-door)

  7. #7
    Constant Bitrate KaiTech's Avatar
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    Quote Originally Posted by dionysus
    I am right in assuming that I can put the computer in sleep when the car turns off and it won't hurt the battery unless it is left for an extended period of time (several days / weeks), right?
    Right.
    On the 90W you can disable standby power:
    http://www.opussolutions.com/modules...article&sid=20

    On the 150W you cant:
    http://www.opussolutions.com/modules...=article&sid=6

    So the 90W will keep your battery up longer, but you need a low power system...
    I'll spout simplistic opinions for hours on end.
    Ridicule anyone who disagrees with me,
    and generally foster divisiveness,
    cynicism and lower level of public dialog!

  8. #8
    Variable Bitrate RS3RS's Avatar
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    Quote Originally Posted by dionysus
    I am right in assuming that I can put the computer in sleep when the car turns off and it won't hurt the battery unless it is left for an extended period of time (several days / weeks), right?
    Depends on what you mean by sleep. Sleep mode, in the way most people talk about it, is where all the open programs are saved in RAM, and the hard drives, etc. are shut down to save power. The computer is still ON, just in a lower power mode. If power is cut to the computer, it shuts down and has to be restarted (all open programs with unsaved data are lost).

    Hibernation is what most people use, where everything in RAM is written to the hard drive, and the computer is physically shut down. Upon restarting, it just loads everything that was in RAM before back into RAM. That way it uses no more power than just shutting it down, but boots up quicker.

  9. #9
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    no, I really do mean sleep. Just like when I close my laptop and it sleeps - writing everything to ram and shutting everything else down. Sure hibernation would be fine, but I would rather just have the thing pop up, as opposed to boot up. My car is driven every day, so it get's a lot of use and never really stands there for a long time... if I was going to leave it for a couple of days I would hibernate it.... but like I said, if my laptop battery can keep my laptop asleep for weeks, shouldn't my car battery be able to do atleast the same?

  10. #10
    Raw Wave Confused's Avatar
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    I've gone 4 days with my carputer in Standby with my 150W Opus, and the car has started fine

    I would test it for longer...but I rarely use my car less than 2-3 times per day!

    Go for the 90/150W Opus, you won't be disappointed


    Garry
    Co-Developer of A.I.M.E.E
    www.aimee.cc

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