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bluetooth to rj45 serial

Discussion in 'Radio and Wireless' started by supert8ch, Mar 30, 2012.

  1. supert8ch

    supert8ch

    3
    0
    Mar 30, 2012
    I am very new to electronics and find learning easier by doing. I have a small project I wish to try to start my learning curve. I have a serial device that I want to make a bluetooth adapter for. This would allow for no cables at a distance of about 15 feet. I would love to get video on this also but not sure if that would be very workable. Here is the connections:
    18 volt power supplied by the device.
    Connect with RJ45 connector
    Connector tied to a bluetooth module
    Be able to link with RS232 to laptop.

    Not sure if this can also be done with a RS485 connection??

    If anyone has some ideas of the parts to start with would be a big help.
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,223
    2,696
    Jan 21, 2010
    Have you googled for "Bluetooth serial adapter"?

    I think it *may* be what you want.

    I'm not sure how you'd transfer video over that though (unless the answer is "very slowly")
     
  3. supert8ch

    supert8ch

    3
    0
    Mar 30, 2012
    The problem with the ones out is they are serial db9 adapters. I need it to be a RJ45. I am just learning these things but my thought was something more compact and to the application that I need.
    I have a unit that has 2 RJ45s - in/out ports and a RCA video port.
    There is 24 volt dc power on pins 3 and 6, I think this would be plenty for bluetooth.
    I wanted to have a small unit to plug into the RJ45 and RCA to send this data to the laptop. The video is needed as now a usb video adapter is used with a cord also. The unit is programmed with the serial connection and verified with the video display.
    The RJ45 uses RS232 for a single unit and when daisy chained uses RS485.
    Oh ya and it hangs on the ceiling so that is the main drive to make RJ45/RCA wireless.

    I hope this helps some in my needs and wishes to come up with a device.
     
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,223
    2,696
    Jan 21, 2010
    I guess you could search for some RJ45 to DB9 adapters. I threw some out recently :(

    since RJ45 connectors are not standard for use with RS232, you're unlikely to find something commercial that uses them for this type of signal.
     
  5. supert8ch

    supert8ch

    3
    0
    Mar 30, 2012
    I have RJ45 to DB9 cable adapters. I am hoping to come up with a RJ45 to bluetooth. Even with just that the video cable I can work out later. I guess 1 step at a time to start with.
    So the question still remains of what could be used to make this?

    I was thinking of a bluetooth module added to a some serial board. Reduce the power from the 24 v dc to the 5 volt, I think that is the right voltage off the top right now.
    As stated I am new and this would be a a first for me to play and learn on.
     
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