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Thread: Renault "Tuner List" Head Unit/CD changer hacking - Controls

  1. #161
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    Quote Originally Posted by Vicne
    The "from 2000 on" means "digital sound link".

    As far as I know, models before 2000 had analog sound between CDC and HU.
    Which car model and year do you own ?
    My car is DACIA LOGAN made in 2005
    HU is 22DC229/62 (I see that this model is present on Twingo II form 2002)

  2. #162
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    Quote Originally Posted by CristianC
    My car is DACIA LOGAN made in 2005
    HU is 22DC229/62 (I see that this model is present on Twingo II form 2002)
    Yes indeed, so I'm afraid it's digital...

  3. #163
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    (I have the strange feeling that everybody's coding hard...:-) )

  4. #164
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    Update

    Slightly modified version of the rosetta stone document. Mainly fixed formating and typo

    **OUT OF DATE. AN UPDATE IS AVAILABLE IN A POST FURTHER BELOW **
    Attached Files Attached Files

  5. #165
    mox
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    Quote Originally Posted by Vicne
    (I have the strange feeling that everybody's coding hard...:-) )
    Except for those who own a Connects2
    CarPC status: HW all done, SW needs tweaked.
    Hardware: VIA MII-12K, 512MB, 60GB 2.5", CW-8123 DVD-CDRW, 7" Lilli ts, Opus 90W, BU-353 GPS, 802.11b PCI, USB bluetooth dongle, AverMedia AverTV Cardbus Plus, Morex Cubid 3677
    Software: RR, MM/FD

  6. #166
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    Quote Originally Posted by mox
    Except for those who own a Connects2
    By the way, when do we begin spying on it ? :-)

  7. #167
    Constant Bitrate Putput's Avatar
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    Quote Originally Posted by Vicne
    (I have the strange feeling that everybody's coding hard...:-) )
    Some of us have to work from time to time . And I'm not only working, I'll be on holiday next week so coding will have to wait a while. (No my laptop is not going with me, my girlfriend is )
    As soon as I'm back I'll start coding again and this time a serial interface will be included so that the prog can be directly linked to the HU. It would also be very interesting to know how the Connects2 interface fools the HU. It would probably send CD 1 TR1 and zeros in the time fields, I don't think that the HU will keep track of elapsed CD playing times, or controls any of the data send by the CDC. As long as the telegrams fit the description everything is ok for the HU (I think). But perhaps by the time I get back this question will be solved and perhaps a tested and working hardware circuit??
    Keep up the good work guys!!!

  8. #168
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    Quote Originally Posted by Vicne
    (I have the strange feeling that everybody's coding hard...:-) )
    I do not have much time to disposition: family, work and the Olympic Games :-) hold me a lot engaged, however in the night something i can do.

    Actually I'm sniffing the signal from the HU using PALM PSION but something in my in interface is wrong which type of interface using you?

    bye
    pep

  9. #169
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    Quote Originally Posted by Putput
    Some of us have to work from time to time
    Jeez, that's it.
    I was sure I had something to do but couldn't remember what, but now that you remind me it's true : I have a job !

    It would probably send CD 1 TR1 and zeros in the time fields, I don't think that the HU will keep track of elapsed CD playing times, or controls any of the data send by the CDC. As long as the telegrams fit the description everything is ok for the HU (I think)
    I think too. I don't think the HU checks these frames for consistency, because when a CD is scratched or there are bumps in the road, time doesn't follow a correct sequence (but maybe the changer sends a specific 'read error' message in this case ? Anyway, I'm not going to scratch a cd just to test :-))
    But perhaps by the time I get back this question will be solved and perhaps a tested and working hardware circuit??
    I bought a LM324 and a few variable resistors and I intend to use this Op Amp as a comparator to do the conversions, adding hysteresis with a positive feedback (see page 8 of this document)
    As I won't have any inversion in this case, I think I'll use this principle for both Tx and Rx, and get rid of the MAX altogether. The only thing that will be missing is the negative voltage output, but it seems it's not needed at all for most PCs. I'll let you know when I have something working...

  10. #170
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    Quote Originally Posted by peppuz79
    Actually I'm sniffing the signal from the HU using PALM PSION but something in my in interface is wrong which type of interface using you?
    I'm using the one of post 36 except that the 18K resistors at the bottom have been replaced by 10K ones.
    You can't just use a MAX232 the standard way because it inverts the signal, hence the use of an RS>TTL as an inverter.

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