Discussion in 'Sensoren & Abgleichen' started by FarCry123, Apr 10, 2011.

  1. FarCry123

    FarCry123 New Member

    I recently bought Graupner Ultra Trio Plus 14.
    I'm having trouble with understanding, how to connect charger to PC (personal computer).
    Charger have 3-pin connector. Pinout please...
    How do I connect this charger to PC?
    Is this possible without any adapter?
    Do I connect these three pins directly to RS232 port on PC? Pinout please...
    Or do I donnect these three pins to USB? Pinout please...

    Thanks for any pinouts / suggestions.
  2. Dominik

    Dominik Administrator Staff Member

    Hi !

    To be honest I have no idea at the moment. Let me check the pin laypout and I will post it here.

    NO !!!
    That is an serial interface not an USB interface !

    You need any serial / USB adapter or a "pure" COM Interface at your PC.
  3. FarCry123

    FarCry123 New Member

    Thanks for answer.
    On charger there is 3-pin connector.
    So I assume that one pin is GND, one is RX and third is TX.
    I will try it and post the resoults and picture of connector.
  4. FarCry123

    FarCry123 New Member

    I have tried it and it doesnt work :-(-
    I've connected 3-pin to RS232 port.
    I got some data comming through, but it doesn't make any sense.
    LogView and groupner program doesn't connect to charger.

    Any ideas?
  5. FarCry123

    FarCry123 New Member


    I have managed to communicate and update firmware on my Ultra Trio Charger.
    I have managed this with using broken USB to RS485 converter.
    The RS485 circuit was burned / bad.
    So I used only USB to RS232 part of converter.
    In this converter is FT232BL chip. I have used Rx (pin 24), Tx (pin 25) and GND (pin 17)signals.

    If you need only to monitor data from the charger, the sollution is to use circuit for Simprop charger and connect it directly to RS232 port on computor.
    I had some problems when laptop was connected to power adapter.
    I guess it has something to do with voltage potencial differences betwen laptops GND and chargers GND.
    So I disconect laptop from power (runing on BATTERIES) and everything worked.
    LipoControl Circuit.jpg
    Hope this helps.
  6. Dominik

    Dominik Administrator Staff Member

    Just keep in mind that you have to configure the RTS Signal correctly in the INI File.
    But if it works - have fun :)

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