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Thread: Would anyone buy CD Changer/Unilink cable hacks for Sony head units?

  1. #31
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    Exclamation

    Originally posted by Fosgate:
    <STRONG>Its not really that complicated, as long as you got some basic info on Unilink or other IP Buses protocols it matter of connecting the data line to your serial port and listening to the commands that your deck send out...
    What i would to know is where did you get info about the Bus protocols...
    I was trying to do something similar with Pioneer IP Bus but cant find any info about it. Well only thing that i really need to now is how to trick the unit to think it has a stacker connected to it so it would go in to stacker mode... the rest should be easy.</STRONG>
    I got myself a Sony deck with a DIN connector and 2 RCA cables sitting in my trunk. According to you guys all I need to do is interface the DIN connector to my PC somehow and then hook up the 2 RCA cables to my soundcard.

    Then thru the magic of television (or s/w in this case) I should be able to control winamp (via plugin) using the cd changer controls on my deck.

    What else am I missing here? Am I making it sound to easy? Whats the full story here?

  2. #32
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    i'd like to get one too!

  3. #33
    Newbie mobes's Avatar
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    This may not be as easy as it sounds, guys. The Unilink bus is synchronous, and the timing must be precise, and the only environment that can provide the needed level of precision is DOS, Windows is not a good evironment for precise timing (as soon as you start playing your MP3s you'd lose your connection to the head unit.) The only way to do this very well is to use a microcontroller to act as a buffer between the bus and the computer. (Unless Ashlawn has the timing issues solved.)

  4. #34
    Maximum Bitrate MikeHunt79's Avatar
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    Originally posted by gerard_NL:
    <STRONG>mike, you say you made an aux in cable, but can you control your computer with your buttons on your radio (next,ffwd etc) becouse i think that is what ashawln is making.</STRONG>
    I only got audio in, nothing more
    also: FOSGATE:
    what pioneer heatunit r u using? on min i can turn on the aux input on a hidden menu. (im using a keh-p7900r). if you could get the aux enabled, then u could easily get sound into the pioneer, but anything more seems like an uphill struggle.

    I found some info on the pioneer ip-bus once, but i lost the link.... if anyone here knows it plz. post it... it`s one long page with a black backround and green text:

    One last thing, the timing issue... maybe a dos program could be used, it could just load in the autoexec.bat, then it could hotkeys to operate.... anyone who's used numega softice will know what i`m talking about

  5. #35
    Newbie mobes's Avatar
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    Here is some info on the IP-Bus:
    Yahoo! Group: IPBUS
    and info on Pioneer and also others:
    here

  6. #36
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    Nothing yet.....

  7. #37
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    has the software been made yet??? If so...where can it be downloaded????????????
    Computer:

    FV24
    custom plexi case
    p3 650

    6.4 lcd

    everything working...except stupid lcd isnt working with shuttle board

  8. #38
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    Exclamation

    Originally posted by Shaggamuki:
    <STRONG>has the software been made yet??? If so...where can it be downloaded????????????</STRONG>
    I don't know, but I seem to be getting no where with this thing. I can't even seem to be getting any audio input from the 2 RCA cables in the trunk connected to my soundcard output. Maybe I need a changer or something else connected to the DIN connector. Someone tell me what I'm doing wrong.

  9. #39
    Variable Bitrate Ashlawn Kemling's Avatar
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    If the Head Unit doesn't think that a device is present, then it will not allow usage of the AUX in. The software is there to allow it to work.

    Yes, DOS does provide a great enviroment but I am using a timer control provided by windows to get accurate timing. I also included a little piece of code that calculates the best delay value needed. The main problem I'm having is that the software looses the connection from tiny differences in timing. Lets say the the head unit is communicating at 1.1ms. If the timing is off by .01, making it 1.11ms, then the software and the head unit eventually get out of phase with each other and lose thier connection. I'm trying to come up with a way that will automatically adjust the timing when a signal is recieved from the head unit.

    --Ashlawn Kemling

  10. #40
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    Originally posted by Mike Hunt 79:
    <STRONG>

    I only got audio in, nothing more
    also: FOSGATE:
    what pioneer heatunit r u using? on min i can turn on the aux input on a hidden menu. (im using a keh-p7900r). if you could get the aux enabled, then u could easily get sound into the pioneer, but anything more seems like an uphill struggle.

    I found some info on the pioneer ip-bus once, but i lost the link.... if anyone here knows it plz. post it... it`s one long page with a black backround and green text:

    One last thing, the timing issue... maybe a dos program could be used, it could just load in the autoexec.bat, then it could hotkeys to operate.... anyone who's used numega softice will know what i`m talking about </STRONG>
    The deck is KEH-M8250, its an old tape player that has CD-Changer support.
    So how do you get in to this hiden menu?
    Fosgate

    System Comp V3 - In progress.
    Low power MB with C7 CPU, DC-DC PSU, car ECU link, USB TV, GPS, 7" TFT, Wireless, Voice.

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