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Thread: Jono's Pintara + Armada = PintArmada?

  1. #1
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    Jono's Pintara + Armada = PintArmada?

    Hi all,

    I finally registered after haunting this forum as a guest for a few weeks. There's a lot of good info in here

    Anyway, I have a 1991 Nissan Pintara (the Aussie version of the U12 Nissan Stanza) which I want to put my computer into, a Compaq Armada E500 laptop which I use for university:
    P3 900MHz
    128Mb RAM
    20Gb HDD
    CD-ROM
    Component video out
    only ONE USB 1.1 port
    D-Link Extreme-G 802.11g PCMCIA card
    I have 2 port replicators for the E500, one is on my desk at home, the other I want to mount under the passenger seat of my car.

    I'm waiting on a GlobalSat BU-303 GPS mouse off eBay.

    I'm looking at buying:
    8" touchscreen off eBay (~AU$300-320, Lilliputs are AU$320 inc. shipping)
    extra 256Mb of RAM
    CD-RW/DVD-ROM drive off eBay
    a couple of USB hubs

    I also have a 75W inverter (AU$25 off eBay) and a 50WRMS (I think) 2ch amp.

    Objectives:
    Convenient MP3 Player
    Moving-map GPS navigation
    DVD and DivX Player

    I will mount the Port Replicator under the passenger seat facing forward so the laptop slides in from the front.

    For now I will run the laptop powerpack (also the power source for the port replicator) off the inverter. I will use a couple of USB hubs to run the touchscreen, GPS and other assorted devices like keyboards and game controllers. I'll run the audio from the computer through the 2ch amp and out to my 4 speakers until I have the money to get another amp. I will mount the LCD in the double-DIN sized opening where the head unit is and relocate the HU to either the glove box or under the seat. I'll use a switch to switch between the computer audio and the HU audio, like the ones you can get with the RCAs for home theatre use.

    In the future I want to:
    Get a DC-DC converter to power the laptop ([email protected]).
    Get a second screen for entertainment purposes (I'll run it off the video out line since the computer sees the video out as a second monitor)

    Questions:
    Does anyone know what pins on the docking station connector to bridge to get the computer to power up? I found the pinout diagram on the HP website, and after working out that pin 1 was actually on the complete opposite side of the connector I tried bridging the 'POWER ON' terminal to ground, +5V and +3.3V, and some other random pins, with no results. I know there is a way to power up the laptop through the docking connector because docking stations have a power button on them. I DO NOT want to solder wires into the switch on the computer, because the computer has to be removed for uni. Even having a plug on the wires would be inconvenient because it's one more thing to plug in. I know it has a power on signal on the docking connector because the docking stations have a power on switch. ---Could someone who has an Armada docking station please let me know which pins they are? Preferably by opening up the docking station and tracing the tracks from the switch back to the docking connector. And I have searched for this info.

    Are the audio out levels on my computer at the right level to be fed into the RCA inputs of my amp? --> answered by browsing through the forums. YES

    Can anyone recommend a DC-DC converter? It has to put out 18.5V at at least 2.7A.

  2. #2
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    I just measured up the centre fascia on the dash of my car. Does anyone know what height the internals of an 8" touchscreen are? I have 13cm of height to work with.

  3. #3
    Constant Bitrate JaymzRR's Avatar
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    Jul 2005
    Location
    Issaquah, WA
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    216
    For a power supply it seems your best option may be the Opus which says it goes to 19v after a quick check. They have like 4 different wattage choices up to 150W. It seems to me a inverter wouldn't be worth it for only 70w. DC-DC certainly appears to be the favorite, the only reason I would consider an inverter personally is if I needed more than 250W (search for Soggy DIY PSU @ 250W).

    Albeit I don't know much but it seems the risks you take with an inverter (largely the risk of it just not working) seem not worth it. If it's worth doing, it's worth doing right. Though some people love their inverter setups so to each his own I guess.

    The Opus's are available via the MP3Car.com/Store

  4. #4
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    Brisbane, Qld, Australia
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    Hey, thanks for your reply.
    I had a look at the Opus DC-DC converters, the 80W one you pointed me to would cost me AU$131 (plus shipping?) and then I'd have to modify it to get it to do what I wanted.

    I had a look at the Jaycar site and found this.
    AU$89.50 and it's a premade unit with cables and plugs all premade.

    I think I'll go with the Jaycar unit.

    *goes back to twiddling thumbs while waiting for BU303 to turn up*

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