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µLCD-32PT(GFX) faails with CP2102 USB-UART adapter

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  • µLCD-32PT(GFX) faails with CP2102 USB-UART adapter

    I have a uLCD-32PT(GFX) that works fine when used with an FT232 adapter. However, it does not work when I use another adapter that has a CP2102. It keeps saying "Device not found". Has anyone seen the same problem?

  • #2


    Have you installed the CP2102 driver?

    Who or what is producing the "Devive not found" message, and it what circumstance?

    What OS are you using?
    Mark

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    • #3


      Yes, I installed the CP2102 driver. I see it as COM5 under Windows Device Manager.

      The error message is from 4DGL Workshop3. It scans COM5, then reports that the device is not responding.

      I am using Windows 7.

      Comment


      • #4


        I had a lot of trouble getting the CP2102 driver installed in Windows 7.

        Every time I dowloaded it I seemed to end up with a different filesize and it would install or not install to various degrees.

        The 'final' download that worked was 7,127,746 bytes long.

        It now works fine in Workshop
        Mark

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        • #5


          The driver I have is the same size as yours - still does not work. I also tried uninstalling Workshop and re-installing it but no luck. I'm wondering if it has something to do with the RESET line.
          Attached files

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          • #6


            Well, yes, the reset line is very important (sorry, just assumed you were using an MB5).
            Mark

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            • #7


              Thanks for taking the time to answer my questions. This is what I am using http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280498038626

              If you see something that can be done to make it work, great. If not, it is no big deal.

              Comment


              • #8


                I can't find the circuit diagram for that on eBay, but I've got the sneaky suspicion 'reset' is actually reset to the CP2102, not what we are after.

                You could try the reset part of the circuit from here http://4d.websitetoolbox.comhttp://files.websitetoolbox.com/23294/963864 (i.e. just the NPN, the 22k and the 0.1) and connect the 0.1 to pin 28 on the CP2102

                Good luck with the soldering
                Mark

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                • #9


                  Hola! The circuit?
                  Error: File not found
                  Saludos!

                  Comment


                  • #10


                    The internet seems to change in 3 years
                    Mark

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