Cautionary Tail - Dead BigBox

Discussion in 'BigBox General Chat' started by SoBaldrick, Jan 27, 2017.

  1. SoBaldrick

    SoBaldrick Well-Known Member

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    Nut fell off the fan that is above the RUMBA, BigBox dead :(

    now comes the fun part, finding out if it's the power supply or the RUMBA.
     
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  2. Rob Heinzonly

    Rob Heinzonly Well-Known Member

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    I'm afraid it will be your RUMBA board that is dead. You can't kill a power supply that easy. Maybe it was a sign of your printer that it is time you upgrade to a DuetWifi board ;)
     
    eca likes this.
  3. Spoon Unit

    Spoon Unit Well-Known Member

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    *goes to check fan nuts*
     
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  4. SoBaldrick

    SoBaldrick Well-Known Member

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    @Rob, i was thinking the same thing myself ;)
     
  5. SoBaldrick

    SoBaldrick Well-Known Member

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    looking at the cost, think I will stick with the RUMBA for now, but looked on E3D shop, and they don't sell them, anyone sugest a UK supplier.
     
  6. Ephemeris

    Ephemeris Well-Known Member

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    I'm so sorry :(

    For what it's worth this is one reason I used nyloc nuts wherever possible, and most nuts that can fall into the electronics bay on my BB are GLUED into place.
     
  7. Spoon Unit

    Spoon Unit Well-Known Member

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  8. Jasons_BigBox

    Jasons_BigBox Well-Known Member

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    I think I'll check mine too.

    A few weeks back I found my fan was too tight and had stopped spinning. I loosened them a little.

    I do go around the machine occasionally checking all of the frame screws. They do loosen over time without some form of locking.
     
  9. Miriam

    Miriam Active Member

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  10. Dr Jeep

    Dr Jeep Well-Known Member

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    I've done a bit of automotive electronics so are well aware of that sort of gotcha....those fan nuts were threadlocked when I first fitted them :)
     
  11. SoBaldrick

    SoBaldrick Well-Known Member

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    Replacement RUMBA arrived from ooznet, fitted fine, just two output connectors in a different place, Raspberry pi power and lid fan.

    octoprint bigbox firmwar updater used to load RUMBA.

    All back and working, nuts glued in place now...
     
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  12. Spoon Unit

    Spoon Unit Well-Known Member

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    Would be good to capture that in a picture while it's fresh, incase someone else has a similar issue. Is it marked as a different version then?
     
    cez likes this.
  13. cez

    cez Well-Known Member

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    Im in your position at the moment, im going to order exactly the same board, can you tell me what stepper driver option you picked?. and do you have a photo of the moved output connectors?
     
  14. Ephemeris

    Ephemeris Well-Known Member

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    Ouch Cez :( What happened?

    The Rumba is a lot cheaper, but if you can swing it, I really recommend the Duet WiFi. It's made my life a lot easier
     
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  15. cez

    cez Well-Known Member

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    I'm not 100% sure. There was a power surge just beforehand that tripped a main switch. Im wondering if that was the problem. Is the duet wifi easy to install?
     
    #15 cez, Jun 29, 2017
    Last edited: Jun 29, 2017
  16. cez

    cez Well-Known Member

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    Did you use your old steppers and swap them over or did you buy new ones?

    http://ooznest.co.uk/3D-Printer-Electronic-Parts/Boards/RUMBA-Controller-Board

    I purchased this with 5 A4988's, if i use the steppers that come with the new board do i need to do anything extra to them? Other than that if my original steppers are okay i was going to just swap them over and put the old ones in the new board.

    Would it also be possible to post a pic? and show me where the Raspberry pi power and lid fan connectors differ :)
     
    #16 cez, Jun 29, 2017
    Last edited: Jun 29, 2017
  17. Ephemeris

    Ephemeris Well-Known Member

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    I'd rate it as very easy, by which I mean just slightly harder than replacing the Rumba with another Rumba. I think the most complex issue was the connectors on the endstops. The Rumba was connected to the endstop switches with a 2-pin Berg/Dupont connector and the Duet uses a 3-Pin connector. You just need to pop the pins out of the existing connector and slide them into the new 3-pin housing.

    If you decide to go with the Duet, several of us can walk you through it. Once you realize how easy it is no longer having to adjust those trim pots for the drivers and never having to recompile again, you'll never understand why people put up with such things :)
     
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  18. cez

    cez Well-Known Member

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    Can anyone highlight with a dot where to plug in the two pin power cable for the Pi and the electronics cover fan? Theres a 12v two pin socket just to the right of fan1, this is where i was going to plug in the electronics cover fan.

    As for the pi power I'm unsure. One suggestion I had was to remove the plug from the fan cable and screw the electronics fan into the same socket as the main power supply on the rumba. This will free up the 12v two pin socket (left of fan1) for the P.I Power instead.

    The only downside to this is the electronics fan will always be on as long as the box is on.....unless anyone has any other options :)
     

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  19. mike01hu

    mike01hu Well-Known Member

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    Cez, it is normal for the electronics fan to be on all the time power is applied because the board is active and generating heat, so use those pins. You can connect the dc/dc converter for the Pi to the 24V supply but I did suggest you consider using a separate supply for the Pi so that it remains powered should you shut down the printer. I can't point you to the thread but @Henry feldman indicated that the Pi can have it's data corrupted by switching off without properly shutting down the Pi server OS. I believe he overcame this by using a low-cost external power adaptor. I believe he also removed the Pi form inside the printer and housed it externally.
     

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