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Thread: always on method

  1. #1
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    always on method

    So i have a dream guys. i have built my carpc and it is going very well. but now i want to take it to the next level. I want to build a solution thats "always on". basically i want to run a pc 24/7 in my car. why you ask? its simple. so i can do whatever i want, without having to climb in the car or take it out to work on it inside. i want it to constantly be connected to the web so that i can send commands to the car (turn on, arm/disarm alarm, etc) i want to be able to do all this from a phone. i can build apps and im good at coding. im most likely going to do the software end through PHP (which can be done with classes) to control the OS. and read gps values etc and have them pushed to my phone screen. ive looked at some solutions for using your phone to control the car, but here it is. Im the person who doesnt want to buy something if i can build it myself. i want the satisfaction of saying "hey i built this" or "i did that by myself" yes yes i know what your saying "hey your asking people on here for help!" lol. well just wanted to gather input from everyone here to see if its worth trying to get something like this going. i do not want to put another battery in the car or anything like that either. ive looked at some ALIX boards and ive seen people use those for always on solutions. what do yall think?

  2. #2
    FLAC
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    Possible, however very difficult. First off, if you want it to be constantly on, you're going to definitely sacrifice performance. Your clock frequency affects your power consumption hugely, so you're going to have to use something way slower, alix or fitpc2 for example. If you are ok with that, then the next thing would be removing as much add ons as possible: ext HD, bluetooth, and anything external that draws current. Finally get a deep cycle battery. All that together would get you a PC that might run for a couple days without car running.

    An alternative would be using WOL wifi cards which only turns on your computer remotely as required.

  3. #3
    FLAC
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    Unless you can build a system that draws less than 5 watts, then this wont be possible with the stock battery on 99% of the vehicles out there. At 10 watts power consumption, this might be do-able if you have a huge auxilary deep cycle battery. Also, it is not just a question of how big your battery is. You also need to consider if your alternator is beefy enough to keep everything charged up based on how much time the engine is on everyday (and if that is enough for the battery to absorb all the charge). You dont want to drain more power than what the alternator can put in.

    Basically, the better route would be to just have a wake-on-lan solution.

  4. #4
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    i understand what you guys are saying, but i have a red top battery and this is in a 2004 mazda 3 sedan. i probably should have made this clear earlier but i dont want to replace the carpc, i want to add a smaller board with very low power consumption(as the alix) or something else thats comparable. to then be able to turn on my computer then do everything in need. i want to have the alix run a webserver so then i can do things OTA even when im not near my computer and i just have my phone with me.

  5. #5
    MySQL Error soundman98's Avatar
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    search for sheeva plug


    go check on bugbytes thread on setting up a car to be connectected to the internet cloud--so far, his thread is one of the more detailed threads on getting a setup that will always remain on.

  6. #6
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    Bugbyte's Avatar
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    Right, the Sheeva plug draws 6 watts or less. Try using that.
    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

  7. #7
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    tripzero's Avatar
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    Former author of LinuxICE, nghost, nobdy.
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  8. #8
    FLAC
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    I checked the fitpc2 specs yesterday and recalled it draws something rediculously low like 6w at idle and 10w at full speed. I think you can do the same with sheeva plug or some microcontroller depending on your skills.

  9. #9
    Raw Wave
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    You may want a low voltage cut-out.
    Search my other replies for a great $25 circuit assuming you can construct & solder.
    Maybe see the the independent aux battery idea too (fro charge light or same "high voltage" circuit.

    Why have I become an advert for certain products? Geez!!

  10. #10
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    well thanks guys but i would rather not use the sheeva plug because i do not want to use an inverter. and ive looked at the fit2pc but im not looking to spend money like that. hoping for a lower cost solution. and i have no experience with circuits. but i know a little about electricity and i know how to solder. lol

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