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[Rumba + FGS-LCD-C] USB connection and flashing problem

Discussion in 'RUMBA' started by Couby, May 3, 2014.

  1. Couby

    Couby New Member

    Joined:
    May 3, 2014
    Location:
    Coudures
    Hi, I'm having some problems trying to run my RUMBA + FGS-LCD-C with my in progress build new printer (TAZ).

    I wanted to check my first wirings (X motor, X endstop and FGS-LCD-C).

    A picture :
    [​IMG]

    The first problem I have is that the USB connection doesn't work. A detail in case it can be usefull, the TR/RX lights were off all the time.

    I followed the instructions reported on the RepRap wiki (DFU mode...), without any success.

    So I flashed the 16u2 chip with my USBtinyISP and the firmware given on RepRap wiki.
    Since then I have the TX/RX orange lights on all the time, no blink, like on the picture.

    No USB connection under Windows XP. I have something using Ubuntu.

    So using Arduino IDE under Ubuntu, I tried to upload Marlin firmware.
    It doesn't work reporting timeout issues.
    I connected my USBtinyISP on ATMega2560. By this way it seems the firmware upload is working (I'm not an expert, I don't really know if it is effectively the case).
    But, if now I have light in the LCD, nothing displayed, it doesn't work. And no connection with host.

    So I tried to flash the ATMega2560 with my USBtinyISP.
    I got a verification at the end :
    I searched the net and it is unclear if it is a real problem or not. Some are reporting their boards working after such flash with this message.

    What I can report in my case is that it didn't change anything. I still can't upload firmware directly via USB, and what I think I've uploaded via USBtinyISP, behaves the same way (light in LCD but it deosn't work).

    Any help, check, idea or orientations are welcome.

    Regards


    PS : I reported a ticket with my order reference.
     
  2. Couby

    Couby New Member

    Joined:
    May 3, 2014
    Location:
    Coudures
    My configuration.h as joined file.
     

    Attached Files:

  3. phd0

    phd0 New Member

    Joined:
    Mar 20, 2014
    Location:
    Lyon (France)
    Hello,
    I have the same Pb with my new RUMBa :
    in Régulated 5V jumper position : same Pb with you : LED TX and RX allway ON.
    in USB 5V jumper position: Blue Led blick one time, then all OFF.

    after flash the 16u2 chip with my USBtinyISP (16u2 seen correct a the first time) Pb is the same
    After a long time of searching : the Pb is about the USB cable who wrong .
    with a new : work fine !

    Philippe
    (French)
     
  4. Couby

    Couby New Member

    Joined:
    May 3, 2014
    Location:
    Coudures
    Bonjour Philippe,

    Thanks a lot for this feedback and orientation.

    I tried with another USB cable and... it works :cool:.
    USB connection is good. I can upload the firmware and connect Printrun.

    I still have nothing on LCD screen but I think it is because almost everything is not wired (just X axis...).
    If someone can confirm that point, that would comfort me :oops:.
    Here is what I get from Pronterface :
    Merci beaucoup Philippe, j'avance :).
    Bon dimanche.
     
  5. Couby

    Couby New Member

    Joined:
    May 3, 2014
    Location:
    Coudures
    I do confirm that with some more wiring, it works :), except for the FGS-LCD-C :(.

    I can command X avis movements. X endstop is working. So I think the RUMBA board is fine now.

    Yet for the FGS-LCD-C, I still have a blue screen :(.
    I also notice a SD init fail when connecting the printer in Pronterface feedback messages.

    Any idea ?
    I paid attention installing additionnal libraries (8Uglib).
     
  6. Couby

    Couby New Member

    Joined:
    May 3, 2014
    Location:
    Coudures
  7. phd0

    phd0 New Member

    Joined:
    Mar 20, 2014
    Location:
    Lyon (France)
    Bon je remarque également que ta PID sur la tête de l'extrudeur à les paramétrés par défaut.
    je te conseille vivement d'utiliser la commande M303 T0 C5 S180 (pour un test a 180°C sur 5 cycles)
    lorsque tu seras sur que ta sonde de température sera correctement raccordée a l'extrudeur, et affiche (avec un M105) au moins la température ambiante.
    Philippe
     
  8. Couby

    Couby New Member

    Joined:
    May 3, 2014
    Location:
    Coudures
    Bonjour Philippe,
    Merci pour ce petit complément. Je ne connaissais pas le paramètre C pour les cycles, maintenant oui :).
    Je n'avance pas trop en ce moment mais la finalisation du montage approche. Je ne manquerai pas de donner des retours sur le résultat.
    Merci encore pour ton aide.
    ++
    Couby
     
  9. Couby

    Couby New Member

    Joined:
    May 3, 2014
    Location:
    Coudures
    Some news and new problems... :)

    I'm very long on this project because of lack of time, but still in progress.

    A big picture :
    [​IMG]

    So my last problems... :-/

    I'm trying to use the auto bed levelling feature, applying this mod on my TAZ (http://forum.lulzbot.com/viewtopic.php?f=16&t=166).
    All seems to be working properly, motors, endstops. I calibrated axes.
    But when executing G29 command, the process doesn't work as expected.
    Instead of levelling up in Z going to a point, levelling, and etc for each point, I have no Z move and no Y move.
    The carriage is moving along X axis only, and the process ends giving 0 corrections as expected with auto-level (and I know there should be, the center is a bit "higher" than the side because of the way my plate is pinched).

    Initially I thought it was related to a firmware settings, but I'm not sure now...

    As the bed is globally well calibrated and flat enough, I tried to print a knob directly.
    The result :
    [​IMG]

    It seems there is something wrong somewhere else...

    I wonder if it could be related to microstepping. Are there any particular settings to do in the firmware for that I would have miss ?
    Or could it be related to something particular to do in the slice ?


    A last small problem I have is with drivers :
    [​IMG]
    They are a bit too large to be inserted side by side.
    I hesitate using sand paper to reduce the width, but I fear damaging something. Any advice/idea ?

    Thanks for any help, regards :oops: .
     

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