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Thread: CarPC Remote control of FM Radio / Amplifier within Blaupunkt HU

  1. #1
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    CarPC Remote control of FM Radio / Amplifier within Blaupunkt HU

    I have now been driving around with my Car PC for 2 year without a decent FM radio receiver and it is driving me crazy that there are no real solutions to add a FM receiver within the CarPC. All FM receivers that have been discussed here on the forum seems to suffer under the receiving quality in the car.

    I started to wonder if it was not easier to implement a Head Unit and use the amplifier and FM radio within this HU.

    Can Anybody confirm if blaupunkt is using I2C for remote control in and external display data? I think they do for the display data, but Im not sure for the remote control in since I can't find a clock in pin on they rear!!.

    If Blaupunkt is using I2C then I would buy the Blaupunkt Casablanca MP54 and do following: (http://www.blaupunkt.co.uk/7644250310_main.asp)

    1. Connect my Car PC to the Aux In.
    2. Design/buy a RS232 to I2C and control the Volume and Search features like cars with steering wheel control.
    3. Design/buy a I2C to RS232 to get the Display information out from the HU on the CarPC (Just the way as new cars does with their board computer)

    I have been looking on the bl233 chip that has several I2C busses and one RS232 interface. (http://www.i2cchip.com/bl233_a.pdf)

    The Casablanca MP54 still has 4-channel Preamp-Out (4 V) for those that does not want to use the HU amplifier but prefers an external HIGH Power Amplifier.

    Incase anybody has experience with I2C busses and/or programming of the bl233 chip please give me a feed back.

    /ProCos

  2. #2
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    Ok I know that i am new here and all that but if i may make a suggestion why not use a pci based FM-tuner and utilize the cars antenna

  3. #3
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    Quote Originally Posted by yonu
    Ok I know that i am new here and all that but if i may make a suggestion why not use a pci based FM-tuner and utilize the cars antenna
    Because the receiver sensitivity in not to good with these PC FM receivers. They receives a lot of car noise and the sensitivity is not too good. Car radios has better noise immunity and receiver sensitivity course they are designed to the enviroment within a car.

    /ProCos

  4. #4
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    ok then works for me i just figured i would make a sugestion havn't had any complaints out of clients for home use lol

  5. #5
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    bump ...any news

  6. #6
    Maximum Bitrate tundra2000's Avatar
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    i would like to do something similar to this.. basically since all fm tuners are garbage, i could keep the headunit in the glove compartment and wire the speakers sound into an aux jack and run that into a line-in. however, im not sure how or if it is even possible to control your headunit's radio from your computer. all i would need to do is adjust frequency and i can control volume and everything else from the computer. possible?

  7. #7
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    Transflective Lilliput 8", LV-677DC Core Duo 1,83Ghz, , Mpegbox uSDC20D, Shuttle Express, HQCT, PG XS6600 http://carpc.boyakasha.dk

  8. #8
    Wal
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    http://www.car-pc.info/phpBB2/viewtopic.php?t=8871
    Selfmade Blaupunkt Twin-Tuner Radio

    Wal
    Commell LV-673, Pentium M 2GHz 533FB, 1024MB RAM, 40GB 2,5'' Festplatte, Pioneer DVR-K05 DVD, Soundblaster Live 24-Bit USB, Hami 8'' TFT, Velleman K8055 I/O Card, Selfmade Blaupunkt TwinTuner Radio
    GPS: "MapFactor PC-Navigator 7"
    Frontend: "cAVe_Live"

  9. #9
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    Amplifier + Radio usb and embeddable

    There's a very interesting Russian version discussed here, where the amplifier is built-in 4x50-70 and has a built-in usb soundcard too!
    http://forums.fluxmedia.net/91981-post19.html

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