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CarPC Remote control of FM Radio / Amplifier within Blaupunkt HU

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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
    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

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    • #3
      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

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      • #4
        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

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        • #5
          bump ...any news

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          • #6
            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?

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            • #7
              not all pc radios suck : http://www.mp3car.com/vbulletin/showthread.php?t=69493
              Not doing carpc anymore

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              • #8
                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"

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                • #9
                  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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