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Thread: ALCAS (A Linux Car Audio System)

  1. #1
    Low Bitrate jospfh's Avatar
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    ALCAS (A Linux Car Audio System)

    Update below!

    Car: 1991 Peugeot 205 XE
    Engine: 3 cylinder 1.0L
    http://schapenstal.homeip.net/alcas/...eot_205_XE.jpg

    Hardware:
    Processor: Intel Pentium 133
    Case: A wooden box (not built yet)
    Power: Homebrew powersupply from http://home.concepts-ict.nl/~cybersake/carmp3/ (not built yet, ordered the parts....)
    Memory: now 64MB instead of 16 MB, to speed up compiling.
    Storage: 20GB Seagate 5400rpm (for mp3s), 8MB CF-card (for OS)
    Sound: Soundblaster AWE 32
    Network: 10Mbit NE2000 clone
    Motherboard: some sort of pentium 1 board
    Videocard: VGA with 512KB (the computer doesn't boot without one )
    Display: Character LCD 20x4
    Radio: FM tuner (Aimslab)
    Control: Infrared remote control (lirc)

    Software:
    alcas linux (Based on slackware 8.2 and only 6 MB big, uncompressed that is)
    mpg123 0.59r (mp3player)
    alcas (a program that: reads joystick input, handles playlist, controls the lcd, controls the FM tuner, controls mpg123 and controls the volume)

    Extra info:
    As you can see I have a minimal system (the car included......) I put a lot of effort in making the OS and alcas. Minimizing the OS and putting it on a CF-card make the computer boot in less than 25 secs.
    Making alcas myself gave me the total freedom on how it should work and how it can be operated.

    Project site:
    http://schapenstal.homeip.net/alcas/ For more info on how I'm building my system.

    Jospfh

    Ofcourse remarks and suggestions are welcome.

  2. #2
    Constant Bitrate
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    put a / after the url's to get them to work.

  3. #3
    Low Bitrate jospfh's Avatar
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    Update:

    - Updated the website:http://schapenstal.homeip.net/alcas/ .
    - completed CF-card section
    - made a download section
    - added the disclaimer
    - etc. etc.

    - Finally the parts for my power supply came in and I'm planning to build it this weekend.

    - Replaced the motherboard, now I can disable the RAM check at boot.


    What's to come:

    - Schematic of my startup/shutdown-controller. It will work with a delay for switching a relais on and off. interfacing with the computer will be done using the parallelport.

    - Pictures of my powersupply building process.

    - Design of the case.

    Suggestions, idea's and comment are welcome

  4. #4
    Low Bitrate jospfh's Avatar
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    Update

    Update

    There has been an update on my site:

    - made a logo:
    - made a picture galery.

    Currently I'm building the powersupply.

    Possibly I will not use a gamepad for input but an infrared remote control in conjuction with lirc and a homebrew receiver.

    That was it for now, more to come...

    Bye!

  5. #5
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    Talking

    that's lookin like a good setup man. i like how ur makin that **** ...ie: power supply and stuff.

    good job! keep it up
    MP3 GT

  6. #6
    Low Bitrate jospfh's Avatar
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    No luck yet

    So far no luck with the powersupply yet.... I completed it today, but i doesn't work yet

    12V is nice and steady until you connect something to it.....

    Let's hope this works out ok......

  7. #7
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    hey man, good luck with it. im sure everything will turn out o.k.

    ~peace~
    MP3 GT

  8. #8
    Low Bitrate jospfh's Avatar
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    Update

    Hi,

    Again an update on my progress

    While still busy with the powersupply, I made some pics of the different menus and screen shown on my character lcd. Below an example is found, it's the main menu. Yes I know the photo's are a bit crappy, but the lcd looks better in real life.


    Look at http://schapenstal.homeip.net/alcas/ for more pictures and information on the project in total.

    Furthermore I made my homebrew receiver (see www.lirc.org for more info) work with my soft-ware. This is the receiver:


    So from now on, no more gamepad but a remote control.

    News on the powersupply will come as soon as it works....

    Greets

  9. #9
    Low Bitrate
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    Thanks for posting your updates. I'm still using a basic system (p166) only for mp3 playback, no dvd's or anything. I still haven't installed an lcd display yet. So I truly appreciate your updates on your progress.

    Thanks again.

  10. #10
    Low Bitrate jospfh's Avatar
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    Talking powersupply work!

    Wohoo!

    The powersupply works!

    The hardware power consumption is 18W. The PSU's efficiency is 69%. So the carputer consumes 26W (less than a headlight ).
    I might use a piezo-electric-element for cooling afterall, since cooling only 26W is not that much. Then I can completely close the case for protection against moisture.

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