Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: How do car computers work when you start them and some other questions?

  1. #1
    Constant Bitrate
    Join Date
    Mar 2006
    Location
    columbia, mo
    Posts
    223

    How do car computers work when you start them and some other questions?

    Like, when you start your car, will you have to wait a couple minutes for the computer to load up or is it pretty quick?

    and those shutdown controllers, do they allow you to just turn off the car and stuff? and the computer will shut down safely?

    the computers connect to the battery correct? do they still use the computer power supplies? or does it use modified ones?

  2. #2
    MySQL Error scott_fx's Avatar
    Join Date
    Dec 2004
    Location
    Los Angeles Ca
    Posts
    3,995
    check out the faqs there or different ways of doing this, quick and not so quick. do a search about 'boot time' and xplite and you'll find more.
    New System in progress:
    M10k
    Phaze TD1500 ~> Dynaudio MD130
    Phaze TD1500 ~> Seas g18rnx/p
    Zapco Ref 500.1 ~ 12" tc-9
    Behringer DCX2496 ~ Envision Electronics psu
    Transflective Xenarc

    My Car Pc Install
    My Boat Pc worklog

  3. #3
    MySQL Error scott_fx's Avatar
    Join Date
    Dec 2004
    Location
    Los Angeles Ca
    Posts
    3,995
    heh... i see you're a regular at bit-tech. :-)
    New System in progress:
    M10k
    Phaze TD1500 ~> Dynaudio MD130
    Phaze TD1500 ~> Seas g18rnx/p
    Zapco Ref 500.1 ~ 12" tc-9
    Behringer DCX2496 ~ Envision Electronics psu
    Transflective Xenarc

    My Car Pc Install
    My Boat Pc worklog

  4. #4
    Constant Bitrate
    Join Date
    Jan 2006
    Location
    Arkansas
    Posts
    166
    How fast does your computer turn on when you push the on button?

    Shutdown controller does just what its name says.. Works like an amplifier, turn key off, remote signal is lost, computer goes into shutdown mode.

    Link to a DC-DC power supply:
    http://www.mp3car.com/store/product_...roducts_id=171

    Look in the mp3car.com store for more w/ info.(click on the logo at the top left).
    Jim
    2012 Honda Pilot (In Progress)
    2010 Honda Accord (After the Pilot)
    2008 Honda VTX1800N

  5. #5
    Low Bitrate girbot's Avatar
    Join Date
    Feb 2006
    Location
    Houston, TX
    Posts
    74
    here are some links:

    Start here is has everything you could want:
    http://www.mp3car.com/vbulletin/foru...e=2&order=desc

    This one talks about which power supply to get:
    FAQ: Will <insert PSU model> Power Supply work with my system?

    This one is more info one power supplys:
    FAQ: Power Supplies Explained (Part 1)

    This one is about DIY startup/shutdown controller
    FAQ: Do-It-Yourself Startup/Shutdown Controllers
    You know you're an engineer if you have no life & can prove it mathematically.

  6. #6
    Constant Bitrate
    Join Date
    Mar 2006
    Location
    columbia, mo
    Posts
    223
    did you just check out bit-tech or something?

    so with that one psu you linked, does the mobo plug into that? where does it connect to the battery? you put the controller before it right?

    in the power supply link it says eventually a pc WILL drain your battery in a few days, so how do you prevent this?

  7. #7
    Constant Bitrate noreason's Avatar
    Join Date
    Jan 2006
    Location
    Texas!
    Posts
    127
    Quote Originally Posted by Bboy_jon
    in the power supply link it says eventually a pc WILL drain your battery in a few days, so how do you prevent this?
    I didn't read the link supplied but the battery shouldn't die since the computer is only running for a minute or so after the car is shut off...

    A basic shutdown controller does the following...

    You shut the car off

    the controller loses power on the acc lead

    controller starts an internal timer for killing the constant 12v lead

    controller shorts out what is hard wired to the power button on the computer

    pc starts the shutdown process

    controller timer eventually reaches 0 which cuts the 12v lead in case the computer didn't shut down successfully

    controller waits again for the acc lead to be powered

    ----

    Some may be different but thats the general idea...
    1997 Saturn SL2 Car PC Status [..........] 0% Complete (Removed)
    1999 Honda Accord Car PC Status [::::::::..] 80% Complete (Setting up software before final install)

  8. #8
    Constant Bitrate
    Join Date
    Mar 2006
    Location
    columbia, mo
    Posts
    223
    well in the link it says

    Vehicle batteries can provide a limited amount of electricity to your devices. Even if your computer is completely OFF, a PC will still consume a few hundered milliwatts, needed to monitor PC ON/OFF status. When the computer (car pc) is in the suspend/sleep mode, it will consume even more power, because the RAM needs to be powered at all times. The power consumption in the suspend mode is few watts. No matter how big your car battery is, a PC will eventually drain your vehicle's battery in a matter of days.
    but i think maybe its just for suspend mode?

    so boot time takes around 30sec to a min or so right?

  9. #9
    Constant Bitrate noreason's Avatar
    Join Date
    Jan 2006
    Location
    Texas!
    Posts
    127
    yeah i'm not sure how many people use sleep or suspend mode but I personally use hibernate. coming out of hibernate my computer is usually booted by the time i'm out of the driveway and start going down the road (18-23 seconds?)
    1997 Saturn SL2 Car PC Status [..........] 0% Complete (Removed)
    1999 Honda Accord Car PC Status [::::::::..] 80% Complete (Setting up software before final install)

  10. #10
    MySQL Error scott_fx's Avatar
    Join Date
    Dec 2004
    Location
    Los Angeles Ca
    Posts
    3,995
    i always check out bit-tech for ideas and just to see how crazy those guys are with there amazing installs. puts most of ust to shame really. I saw the thread about car pc's and i recognized your name

    as far as it draining your battery that is only in suspend mode. hibernate or complete shutdown wont drain your battery (at least using the m1-atx, the opus .. unless modified, will eventually drain your battery from what i remember)

    I do a complete shut down and now it's taking a lot longer to boot (well maybe not boot but from the time i start the car to the time centrafuse starts to play musice) since i installd the obd-ii and bluetooh. the more streamlined your set up os the faster you'll be able to boot.

    also the search keywords i provided you will shed a lot of light on how to get faster boot times.

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •