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  • 4duino COM do not start

    i Have problem .
    after 2 seconds of power disappears the com port
    How can I restor all?
    Last edited by thebud; 6th February 2017, 07:16 PM.

  • #2
    your com port isnt providing enough power, try to use a usb powered hub or another usb port

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    • #3
      The com port before it worked.
      It now appears the door for 5 seconds then disconnects

      another 4 duino works on the same port
      A key to return to the factory?
      Last edited by thebud; 6th February 2017, 07:50 PM.

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      • #4
        still should try another port/pc

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        • #5
          i change port... this port compare for 5 second after disappears
          I would return to factory to be sure

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          • #6
            I Found the cause but not the Problem Solution
            Drain my firmware and then I can not therefore more ad Enter Problem And them.
            Can I Come fare to reset everything?

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            • #7
              sorry i didnt understand, does the IDE see the lcd connection and can you verify the pmmc firnware and see if its up to date?

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              • #8
                I downloaded PMMC 4.4
                but the problem I think is arm
                Help me 2 board is blocked
                Is possible reset ARM?
                problem is reset firmware ...
                Attached Files
                Last edited by thebud; 6th February 2017, 10:42 PM.

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                • #9
                  you have the SPE software loaded from the IDE on your screen. can you open an example or demo to test it on your 4duino?

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                  • #10
                    com port recognizes it for 5 seconds
                    Then lose this happens on workshop on Arduino Ide

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                    • #11
                      is possible DFU atmega?

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                      • #12
                        hi I have the same problem.
                        Workshops and 4Duino working properly.
                        Now I can no longer communicate with 4Duino, connect my 4DUino and after 4/5 seconds, from windows device manager, I see that the COMx (4duino) disconnects.


                        I can to reset to the initial conditions?

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                        • #13
                          Hello,

                          If for some reason you have overwritten the bootloader on the atmega32u4, you can reload it using the Arduino IDE.
                          In the JSON file which you set up to use the board, it downloads the bootloader for the 4Duino's atmega.
                          If you go here: http://www.gammon.com.au/bootloader
                          Go about half way down the page, to where there title is "Wiring for Leonardo".
                          If you get an Arduino and connect it up to the 4Duino as per those pictures, you can get it to program your 4Duino, you can reload the 4Duino's bootloader. Else, use a ICSP programmer.

                          Built into the Arduino IDE is a example sketch called "Arduino ISP" which for me is under Built-in examples, number 11, in the examples menu of the ARduino IDE.
                          So you set your board to be your Arduino, plug your arduino into the USB, and program that application into the Arduino you have.
                          You then change the target to be the 4Duino, and wire the Arduino up to the 4Duinos as per that website above, which provides power and the SPI signals, and then set your Tools - Programmer option to be "ArduinoISP", and then when you go Tools - Burn Bootloader, it will write the bootloader to the 4Duino via the Arduino you have still connected to USB to your PC - ensuring the target board is set to 4Duino, even though its the Arduino connected to your PC.

                          I hope that helps
                          James

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                          • #14
                            great work!
                            Thank you

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