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Thread: How many of you are waiting for the CNX-P1900???

  1. #51
    Maximum Bitrate shizzle's Avatar
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    Quote Originally Posted by maxipad96
    Hey man.. I'm all about peace and harmony.

    I have the p1900 sitting in my basement ready to install. I can't wait for this weekend so don't take it as a knock on your product. I will probably for now be manually shutting down my mini.

    I just don't want people to start thinking its OK to hold the power button down for 6 secs in order to shutdown. I've owned 4 macs in my life. Over time shutting your cpu down this way will cause problems.

    Thanks for coming up w/ a DC power solution for the mac. It's gonna work great in my setup. I just hope somebody can reprogram the power button. I will ask my mac techies here at the office, but it's beyond me.
    Quote Originally Posted by shizzle
    That would be sweet if maybe someone with some mac savvy could make it happen! Hope is on the way!
    Im probably gonna try the sleeping 'shutdown' control avenue, and just shut it down (manually) when I wont be driving for a while... I mean, I dont know what else to do untill this gets worked out.
    I'm in complete agreement.

    MikeH, you should definitely update the manual to include this info.
    From the manual:
    • From the "features:"
    • Compatible with Mac Mini including startup/shudown and sleep mode
    • 2.1 Mac mini Application The P1900 is well suited to power the Mac mini in an automotive application. The Mac mini requires an input of +18.5VDC at a maximum power consumption of 85 watts, well within the range of the P1900. The Primary Output of the P1900 will be used to power the Mac, while the secondary can be used to power either your LCD screen or a USB hub for your USB peripheral devices. The P1900 Startup/Shutdown Controller (SSC) can be used to automatically start/stop the Mac mini when you start and stop your carís engine.
    • Since the P1900 SSC currently simulates a momentary button press (~500mSec), Sleep Mode is the only configuration currently supported (not Shut Down). However, the P1900 firmware is field upgradeable by the user with an inexpensive (~$10) PIC programmer. Information will be posted in the future that will allow you to upgrade your firmware to support the Power Down mode (6 second button press). See the U-Flash portion of our website for details on the PIC programmer hardware and free software.
    The info is in the manual, but the features are on the website.
    Carputer status: [-*---------]
    Im thinking laptop...

  2. #52
    Maximum Bitrate shizzle's Avatar
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    Ahhhh, harmony.
    Carputer status: [-*---------]
    Im thinking laptop...

  3. #53
    Newbie MDLarson's Avatar
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    Quote Originally Posted by shizzle
    Good call. You, however, have used an unneeded apostrophe.
    Gah! You're right! Bad grammar usually bugs me too.
    WRX + Mac mini Progress:
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  4. #54
    Low Bitrate FireAnt's Avatar
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    Since my p1900 does not shut down mine with the short press it sends to the button it eventually just kills the power after about 45 seconds. I have not experinced anything bad from this yet, but would really like for someone to write some code that will detect the power buttom press and shut this thing down proper. If I shut it down manually then when I turn off the key it will send a button press signal( thinking it is shutting it down) which will actually be starting it again. And then it will kill the power in 45 seconds during the restart. I've opted to just close my running programs and then let it kill the power for now.

    Mike F.
    05 MINI Cooper Cabrio "Mac MINI"
    progress 95%- Mac Mini, Lilliput 7" , usb-wifi, Rayming GPS, Route 66,easy cat touch pad, CCAR front end"skinned",P1900 power supply

  5. #55
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    Bugbyte's Avatar
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    I've been doing a little bit of research on this. I don't have an answer but I do have some info.

    First, the Mac uses Open Firmware to, among other things, control the behavior of power settings.

    Second, the Open Firmware command "pmset" is used to control power settings. Here is a link to the man page for pmset: pmset

    I read through it and I'm still unclear whether the "pmset powerbutton" entry will change the behavior of the mac to sleep on power button. I think it may simply duplicate what you can already set in the power settings control panel (either sleep or don't).

    I've also found out that you can enter "sudo /sbin/shutdown -h now" on the terminal command line to shut the machine down. It would be easy enough to tie an Applescript to this entry but the trick would be to trigger the script. The code is:

    tell application "Terminal"
    do script "/Path/to/ShutdownScript.sh"
    end tell

    Where "ShutdownScript.sh" is a Unix shell script that has the command in it.

    More simply, ou can also use the Applescript command: tell application "Finder" to shut down

    What I haven't been able to do is figure out how to get notification that the power button has been pressed. There's sure to be a way to know this, but I haven't yet found it.
    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

  6. #56
    Low Bitrate FireAnt's Avatar
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    Any way to remap the sleep command so it actually shuts down? Just another approach

    Mike F.
    05 MINI Cooper Cabrio "Mac MINI"
    progress 95%- Mac Mini, Lilliput 7" , usb-wifi, Rayming GPS, Route 66,easy cat touch pad, CCAR front end"skinned",P1900 power supply

  7. #57
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    Bugbyte's Avatar
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    I've found an SDK on the Apple developer's site that gives info on how to register for power events, including being informed when the sleep button is pressed. Still not sure I understand everything but this definately looks possible. I think I'll post the question on the Applescript developer's list and at least ask about where to find out the answer to this question.
    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

  8. #58
    Maximum Bitrate shizzle's Avatar
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    Quote Originally Posted by Bugbyte
    I've found an SDK on the Apple developer's site that gives info on how to register for power events, including being informed when the sleep button is pressed. Still not sure I understand everything but this definately looks possible. I think I'll post the question on the Applescript developer's list and at least ask about where to find out the answer to this question.
    Good idea... I was actually going to ask a friend or two of mine who are apple developers. Ill let you know if I find out anything helpful.
    Carputer status: [-*---------]
    Im thinking laptop...

  9. #59
    Maximum Bitrate shizzle's Avatar
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    Quote Originally Posted by Bugbyte
    I've found an SDK on the Apple developer's site that gives info on how to register for power events, including being informed when the sleep button is pressed. Still not sure I understand everything but this definately looks possible. I think I'll post the question on the Applescript developer's list and at least ask about where to find out the answer to this question.
    While your'e at it, could you start a thread here, or could someone else who can better articulate on the subject than I? With a good title we might find the answer from one of the bright individuals here on mp3car!
    Carputer status: [-*---------]
    Im thinking laptop...

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