Results 1 to 10 of 10

Thread: running pc off stand-alone battery + solar panel

  1. #1
    Newbie
    Join Date
    Jun 2004
    Posts
    13

    running pc off stand-alone battery + solar panel

    ok i dont know what the difference in wattage consumed between an epia mobo and a p4 2.8ghz desktop style carputer is but i can prabably assume that mine will suck about twice the power....

    here is what im looking for...
    ok a standard laptop for instance, when you close the screen the laptop stays "on" in a suspend mode or something.... now i'd like to have this in my car so that when i go to jump in it i can just hit a key on the keyboard or button on the remote so that the computer comes out of suspend mode and into windows... therefore i dont have to wait a few minutes for it to boot up.

    so i was thinking maybe i can have the computer running off the battery when the car is parked, with a solar panel in my sunroof to keep charge in the battery so it doesnt die.

    do you think a keyboard-sized solar panel would support the power-loss from the computer being in supsend mode?

  2. #2
    My Village Called 0l33l's Avatar
    Join Date
    Jul 2004
    Location
    Berkeley, CA
    Posts
    10,516
    What if its nighttime?

  3. #3
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    in order to have a solar panel that's going to get enough juice to your battery it's going to take a fairly large solar panel...=]

    since you are new, I guess we should go easy on you...

    I hate to burst your bubble, but you aren't the first person to think of this.....there have been a few posts about this already....ESPECIALLY the suspend thing.....

    a solar panel the size you are talking about will do a trickel charge at best (2A), not sure about being able to keep up with the demands of a full sized computer there

    here's a suggestion....
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  4. #4
    Maximum Bitrate tom2112's Avatar
    Join Date
    Nov 2003
    Location
    Sharon, PA
    Posts
    507
    Sorry dude. Most commercially available solar panels can only supply milliwatts of power, where your PC would be drawing watts. It would be like trying to refill a watertank with a drinking straw as the water runs out a sewer pipe.
    So far:
    M10000 Nehemiah, 1Gb RAM, Opus 90w PS, Buffalo Tech WLI2-USB2-G54, 160 Gb HDD, GlobalSat BU-353 GPS, iGuidance, Zippy EL-610, Panasonic CW8123B Slim Slot CDRW/DVD, 10" Lilliput, Sony XA-300, Sony CDX-MP30 Head, OBD-II

  5. #5
    MySQL Error Scouse Monkey's Avatar
    Join Date
    Mar 2004
    Location
    Bristol
    Posts
    9,727
    I doubt a keybaord sized panel will be able to poweer your Pc in suspend becasue it would have to power the inverter and then the standby line on the PSU. If you had a DC-DC psu then possibly but you need to look up the 5vsb (5v standby) current and make sure you casn supply the power needed after accoutning for losses. I would say you need to be able to at least double it at the solar panel end to achieve this.

    a better way would be to produce a solar panal and tank circuit (using a wheelchair gel battery or summit) that provided the 5vsb when the computer was off. For this you could then charge the cell when the PC was running using the solar panel (and also maybe the computer PSU but that is getting complicated) and then when the PC is off you need the tank to immediately start supplying power to the 5vsb - or preferably a little bit before to prevent data corruption if you ar eplanning on using standby. You could possibly do this using a usb line if the PC shuts down usb before turning off. I notice that my M$ mouse LED turns off before windows does.

    EDIT: if wiring a solar panelt o your Pc 5vsb you need a regualtor as solar panels do not give a clean output and can spike.

    EDIT2: sorry, not reading post correctly as doing it on the sly in work. Didn't notice you already suggested the battery as well. but the issues about acivating it and the regulation are things to think about.

  6. #6
    Newbie
    Join Date
    Feb 2005
    Posts
    45
    I believe the battery will somewhat regulate the power. If it surges to, say 16 volts, the battery will absorb it. I may be wrong though but I think it would work similar to a large capacitor.

  7. #7
    Maximum Bitrate SAScooby's Avatar
    Join Date
    Feb 2004
    Location
    Johannesburg, South Africa
    Posts
    535
    search for some solar panels for RV's that should sort you, they even have regulators etc avail to help out and the output from these panels is surprisingly good and is in the Watts band (now if only i could find the linky...)

    if you use a good DC/DC power supply you could definetly augment the car battery with the solar panel
    Nano ITX / 512 MB / 60 GB / Panasonic slot load / M1-ATX / Bu303 / Sound blaster 24 / PPi amps / rockford sub

  8. #8
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    my question is....how are you going to mount it so that it doesn't look 100% GHETTO!?

    I'm going to laugh my *** off if you just stick that thing to your roof.....hehehehe
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  9. #9
    MySQL Error MatrixPC's Avatar
    Join Date
    Sep 2003
    Location
    Beach City, Socal
    Posts
    4,053
    Quote Originally Posted by Red GTi VR6
    I'm going to laugh my *** off if you just stick that thing to your roof.....hehehehe
    Hmmmmmmm... carbon fiber ... roof?
    2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
    89 Supra Turbo P3 600E@750/Abit BE6 II, Alpine M-BUS Car2PC.
    Y2K Accord Dell GX150
    RoadRunner is the best FE PERIOD
    EmoRebellion is a SCAMMER

  10. #10
    Admin. Linux loser.
    Auto Apps:loading...
    Bugbyte's Avatar
    Join Date
    Sep 2004
    Location
    Corning, NY
    Posts
    7,359
    Blog Entries
    2
    Search on term: "Solar". You'll be surprised at the number of threads on this topic.
    Quote Originally Posted by ghettocruzer View Post
    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
    Want to:
    -Find out about the new iBug iPad install?
    -Find out about carPC's in just 5 minutes? View the Car PC 101 video

Similar Threads

  1. Can I put an extra battery in my Chevy?
    By Mastiff in forum Power Supplies
    Replies: 14
    Last Post: 11-04-2008, 11:45 AM
  2. For Sale for all you aussies. Complete mp3 car pc
    By Holden__V8 in forum Classified Archive
    Replies: 20
    Last Post: 04-09-2005, 05:30 AM
  3. Contec Panel PC.
    By masterful in forum General Hardware Discussion
    Replies: 0
    Last Post: 02-11-2002, 04:32 PM
  4. Contec Panel PC.
    By masterful in forum General MP3Car Discussion
    Replies: 0
    Last Post: 02-11-2002, 01:09 PM
  5. Laptop LCD vs Flat Panel LCD (PC)
    By Nads O'Hair in forum LCD/Display
    Replies: 3
    Last Post: 05-02-2001, 08:58 PM

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
  •