Repetier-Host stopped connecting

New Home Forum LowRider Troubleshooting – LowRider Repetier-Host stopped connecting

This topic contains 7 replies, has 3 voices, and was last updated by  Chris Pieper 2 weeks, 3 days ago.

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  • #108621

    Chris Pieper
    Participant

    I ran a small job this morning and everything worked fine. An hour later, after turning off power to the mini-rambo controller, after I powered the controller back on I am unable to connect Repetier-Host with the  router. I tried rebooting the computer (Ubuntu Linux) and cycled power to the controller. I tried switching USB ports and rechecked the printer configuration in Repetier-Host. I haven’t tried replacing the  cable (yet) because I don’t have one on hand. I am able to move the axis using the LCD control. Any suggestions on how I  might troubleshoot  this? Is there another way to  communicate  with the controller via  serial  connection? Thanks!

    #108622

    Krzysztof Rygwelski
    Participant

    Maby look if usb port change?

    lsusb in the terminal should help to see if you have any connection with the board.

    1 user thanked author for this post.
    #108625

    Chris Pieper
    Participant

    Thanks. I tried lsusb with and without the controller plugged into the usb port and the output looks the same in both cases. I interpret this to mean that I’m not connected. This (I think) means I have a bad cable or something is wrong on the board.

    #108628

    Chris Pieper
    Participant

    It seems to be the controller…. I got another USB cable and get the same results. I can see an LED blink on the controller when I try to connect, but the connection is not made. Do I need to replace my controller already (about 3 weeks old…)?

    #108630

    Chris Pieper
    Participant

    Update: I tried to reupload the Marlin firmware using the Arduino IDE and that worked… now I’m puzzled… Any thoughts?

    #108641

    Chris Pieper
    Participant

    Update: I got it to work by specifying the serial port explicitly. The auto setting just stopped working for some reason… ???

    #108693

    Ryan
    Keymaster

    I wonder what could have caused this. After the flash everything works as expected again, auto port setting, etc?

    • This reply was modified 2 weeks, 3 days ago by  Ryan.
    1 user thanked author for this post.
    #108728

    Chris Pieper
    Participant

    I am still unclear as to what happened. To recap,  the unit suddenly was unable to connect with Repetier-Host (about an hour after a successful run). I tried several things including cycling power on the Linux computer and the controller,  changing the usb cable with a new one,  connecting to another computer (Windows) and finally,  reflash g the firmware all with no luck.  I then changed the baud rate (lower) send the program indicated it connected but nothing would work (it wouldn’t move the unit). Then I explicitly selected the serial port (I got lucky and guessed the right one) and suddenly it worked again.  When it wasn’t working correctly,  I could see an led flashing every time the computer tried to communicate,  but it would not connect or follow instructions. I’m very puzzled by this and don’t know enough about how things work to give a diagnosis.

    One change that I made a day earlier was to wire two outlets,  each with a switch, supplied from a single cord (power source).  I use this to power both the router and the controller.  Previously I had each plugged into separate outlets (on different feeding circuits). The system worked fine after making this change but it is something I did before the connection problem started.  Is this a bad thing to do? That is should the controller have a different power source than the router?

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