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Thread: Laptop Startup/Shutdown controller

  1. #11
    Variable Bitrate Squid's Avatar
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    That chip is the 555 timer IC, but you need all the accompanying components to make it work.

    I used 3 of them... one for startup .. one for shutdown... and another for the delay in case
    I wanted to turn the suv back on... depending on what you wanna do, you'd need 1 or 2.
    There are startup/shutdown controllers out there that could do this for u... if your willing
    to spend the $$$$.

    A simple "non-circuit" way to do it is to just hack the power button and just connect
    it to a momentary switch up front... that way you can just remotely control it.
    CarPuter: Dell P3-500 Laptop; D-Link WiFi; Deluo GPS; D-Link Radio; iMac DVD w/ ide2usb
    Audio: Audigy 2 NX; Kicker KX700.5 amp; 20w center amp; Kicker L7 10" Sub
    Display: Lilliput 7" TouchScreen
    CarPuter Install

  2. #12
    Newbie huafist's Avatar
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    I've designed one specifically for laptops that don't use the power switch to make things happen - mine's designed more for people that have gutted their laptops and are building it into the car. Unfortunately, as the designs sit right now you still have to solder two leads to the motherboard. I'm debating writing a piece of software and making it completely plug & play.

  3. #13
    Low Bitrate omar's Avatar
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    I'm using a laptop in my car without a docking station. I just soldered two wires to my power button. My setup is very simple. To power on the laptop, I'm using the 'one-shot' circuit I got from the hardware forum. Total cost was $7.00 (capacitor, relay and resitor). For shutdown I wrote a program that runs at startup in the background.

    The program monitors for power. Once the car is turned off, It will see it's on battery and start counting for 30seconds (this can be any set time). After 30 seconds it hibernates(or suspend) the laptop. If it see's power before the 30 second countdown, it'll stop the count and continue to monitor. Haven't had a problem yet. If anyone wants the program let me know and I'll post it.

  4. #14
    Variable Bitrate Squid's Avatar
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    Using the Power Options in the control panel.. you can just set the laptop to shut down...
    I have that set also on mine... 2 schemes.. plug-in & battery... plug-in is
    always on.. and battery is set to 1 min...

    So when i shut suv off.. laptop goes to battery.. new config comes into play and shuts
    down laptop in 1 min. No software necessary. This is in XP.
    CarPuter: Dell P3-500 Laptop; D-Link WiFi; Deluo GPS; D-Link Radio; iMac DVD w/ ide2usb
    Audio: Audigy 2 NX; Kicker KX700.5 amp; 20w center amp; Kicker L7 10" Sub
    Display: Lilliput 7" TouchScreen
    CarPuter Install

  5. #15
    Low Bitrate omar's Avatar
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    I tried the power options also. It did'nt work for me. It will only hibernate/suspend if the cpu's idle. If music/video is playing, it does'nt detect it as being idle, so it would never automatically hibernate. I'm not using a very high power laptop (hp zt1135 1.2ghz celeron - winxp sp2), so whatever threshold xp thinks idle should be, my latpop wasn'tt. That's why I needed a program, plus I wanted more control over the shutdown period ( less than one minute).

  6. #16
    Variable Bitrate Squid's Avatar
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    Hmm.. mines even slower.. didn't know it had anything to do with idle..
    but with if its being charged or not.. the option is plug or battery.. not what its doing...

    Maybe they take that into consideration too.. but never noticed...
    I just use that as a back up.. my circuitry always shuts my pc down... that is just for
    backup use
    CarPuter: Dell P3-500 Laptop; D-Link WiFi; Deluo GPS; D-Link Radio; iMac DVD w/ ide2usb
    Audio: Audigy 2 NX; Kicker KX700.5 amp; 20w center amp; Kicker L7 10" Sub
    Display: Lilliput 7" TouchScreen
    CarPuter Install

  7. #17
    Low Bitrate omar's Avatar
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    Yeah, I thought so too. I did'nt know it looked at anything other than power or battery until it was'nt working. Upon further research I found out about the idle cpu problem.

  8. #18
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    omar, post the program.
    also, is ur laptop hard wired to ur car? if not, how did u run the sodered wires out of the laptop?

  9. #19
    Low Bitrate omar's Avatar
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    My laptop is not "hard wired" to the car. It's running on an inverter and could be taken out at any time. I just soldered two wires connect to the power button. The wires are run out a hole (already part of the laptop, for a security cable it think) in the back of the laptop. The wires are then connected to a one-shot circuit to simulate someone pressing the button.

    Here's the program. Just create a folder and unzip the files in there. Edit the config.ini file to set the timeout and restart option(restart,hibernate,shutdown,susdpend....) then place in your startup folder. It'll show in the system tray. .NET framework required. I can rewrite in vb6 if needed to bypass the .NET requirement.
    Attached Files Attached Files

  10. #20
    Newbie huafist's Avatar
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    I've finished the initial design of my controller. It's not laptop-specific. Can be used only any PC with a serial port (designing a USB version too). Basically, you just wire it up to your Remote wire for your car stereo and ground, plug it into your serial port, configure Wake on Ring, and install the software. It'll suspend and resume the machine based on ignition position.

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