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Thread: Simple..cheap startup controller!

  1. #1
    Newbie slice's Avatar
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    Simple..cheap startup controller!

    Thanks to the help of the12volt.com I have just finished creating a startup controller that turns on the inverter and powers on the pc. Startup.jpg is a diagram that shows appropriate connections for the inverter power on. This allows the inverter to turn on when the key is turned on and stay on while starting the car.

    The switched +12v goes to a supply that is turned on with the key...such as the cigaretter lighter...in my car and many others, the cigaretter lighter does not provide +12v when cranking.

    The..To switch goes to a switch whether it be on the dash or wherever you put it to stop the current to turn off the inverter..without this the inverter would stay on after you left your car..this just resets the third relay in the diagram. You can flip the switch back on when you leave your car, unless you have it connected to the cigarette lighter and your car is like mine and the cigaretter lighter stays on about 10 minutes after you shut the ignition off.

    The..To inverter goes to the inverter and acts as the switch..WARNING: you have to dismantle your power inverter and remove the switch and solder these to wires to the wires that were connected to the switch.

    You know what the ground is for!

    Now you can wire the inverter to the battery.

    As for the PC power on I used a simple constant to momentary relay wired to the Amp turn-on lead on my head unit. The delay between the key turn and the actual output on the turn-on lead is long enough for the inverter to power up before the PC tries to turn on. As for systems w/o a head unit this wont work! lol..Sorry!

    Advantages:
    Turns inverter on
    Powers up PC...if you have a headunit

    Disadvantages:
    Still not fully automatic as you still have to flip a switch twice before you leave your car
    Does not power off PC safely..ie. hard power down
    The inverter will stay on until the accessory output turns off..but it shouldnt be long enough to drain your battery

    That should be it..If theres any questions plz post and ill get back to you.
    Attached Images Attached Images   
    PC: PC-CHIPS 955G,P4 2.6Ghz,512Mb,80Gb,16X DVD
    Screen: 7" Lilliput 619
    HU: Alpine CDA-9815
    Front: 6.5 rockford components system with 4 tweeters
    Rear: 6X9 Kicker Impulse
    Amp: Profile Clarus Cl400
    Subs: (2) Kicker CompVR 12"
    Amp: RF 500a^2

  2. #2
    Maximum Bitrate techy101's Avatar
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    You may want too look into a thing called a Tank Circuit. It eliminates the disadvantages you have listed, and does everything your startup controller does. What you built seems very similiar to a tank.

    I have posted a really bad component drawing of the one that I am using. Just to let you know, the +5v coming out of the PSU, through the relay hooked to the +12v Ignition line, and back into pin 8 on the COM port is for your shutdown controller. You setup a generic UPS in XP, so that when that pin looses power, it waits a specified amount of time, and initiates a shutdown procedure.

    Personally, I have mine hooked up to a second battery thats hooked up to the alternator using a multiple battery isolator. This allows the system to hold on through crank. The battery was picked up for free at a wheelchair store. (it is one of the used electric wheelchair batteries. They will give them away for free since it costs them $$ to dispose of them. Just take a meter with you to see which ones still have a charge)

    As you can see, there are two +12v lines holding open the other relay. This is so when you shut off your car, the relay stayes open, until the PC shuts off. As soon as that happens it will cut any contact from the inverter to the battery.

    I hope that some of this makes sense, as it is nearing 2am overe here, and im nice and tired You can search back and find tons of stuff on these, and there are a bunch of people who use them, so just ask if you have any questions.


  3. #3
    Variable Bitrate will1384's Avatar
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    it waits a specified amount of time, and initiates a shutdown procedure.
    I have mine like that pin 8 and 4 using windows UPS software
    - but there does not seam to be a way to set the delay time - you can set it, but it shuts down in about 30 seconds no mater what you set it for - I want 10 min delay - A little side note, XP does not need a shutdown controler - just disable "Write Caching" and cut power to it - no need to shutdown at all

  4. #4
    Maximum Bitrate techy101's Avatar
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    I forget exactly where it is, I'm on a laptop right now, and I can't get to that menu. As I can remember it's something like "wait xx time and procede to....." It is in there, cuz I have mine waiting 20 min. The biggest thing I like about this is that I can leave it running if i need to run into the store or something for less than 20 min, and come back and not have to reboot the machine.

  5. #5
    Variable Bitrate will1384's Avatar
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    and I can't get to that menu. As I can remember it's something like "wait xx time and procede to....."
    I have been using the menu to set that - but it still shuts down in
    30 seconds - I had thought it was because I was not using
    a real UPS - but it now sounds like my UPS setting are messed
    up - or windows

    - here is were I posted
    shutdown software - fake ups - few questions

    The biggest thing I like about this is that I can leave it running if i need to run into the store or something for less than 20 min, and come back and not have to reboot the machine.
    That what I was trying to do but never got it to work - now that I know it
    can work - I will try to fix it - thanks

  6. #6
    Maximum Bitrate techy101's Avatar
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    under the critical alarm area, check "minutes on battery before critical alarm" box, then set this to whatever you want. Leave "when the alarm occurs, run this program" unchecked. Under "Next instruct the computer to" make sure you have selected "Shut Down"

    You may or may not need the "enable all notifications" box checked. I can't remember. Toy around with it, and best of luck


    EDIT It could also have something to do with you using the shorting of pins 4 and 8 method instead of just cutting power to Pin 8. Are you still running that other piece of shutdown software?

  7. #7
    Variable Bitrate will1384's Avatar
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    Are you still running that other piece of shutdown software?
    nope - I liked it, but it almost killed my battery a few times

    EDIT It could also have something to do with you using the shorting of pins 4 and 8 method instead of just cutting power to Pin 8
    Its rewired a little - com port pin 8 is on the relay pin 30 and
    com port pin 4 is on 87 not 87a

    I tired the 5 volts from the Powersuply, and on both pin 87 and 87a
    on the relay - still same thing -

    hey slice sorry about jacking your thred

  8. #8
    Maximum Bitrate techy101's Avatar
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    I'd guess that you probably aren't setting up the generic UPS up correctly. Give me a bit and I'll try to find the thread that I learned how to do it from.

  9. #9
    Variable Bitrate vxcarpc's Avatar
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    Just Cooler makes a remote controller kit for AU$60 that takers care of startup and reboot remotely.. i got one and it works perfect.. uses radio waves and hooks up to the ATX power and the power and reboot jumpers..

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