Reset switch?

Discussion in 'BigBox General Chat' started by UlrichKliegis, Mar 8, 2016.

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  1. UlrichKliegis

    UlrichKliegis Well-Known Member

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    Chase Wichert asked me to post this here too.

    As mentioned here and there (@KS) before, I had the chance to collect some experience with the Rumba controller. It is a pretty reliable piece of hardware (except the USB socket on my old controller) and certainly a good choice.

    Nevertheless, as we have read here already a few times, there occur situations where you want to hit some sort of an emergency halt button. On my OrdBot-controller, the same LCD board is used like the one that comes with the BB. You have a choice of which housing you build there after assembling everything in more spaghetti-plate like manner.

    The boxes for the LCD display (you find them on Thingaverse) all have one very valuable feature - an integrated button to operate the reset switch that lives on the LCD board next to the rotary dial (incremental encoder). I am not sure how often I pressed that button in the past two years during prototyping new firmwares, new steprates, new PID configurations or just when something went not exactly als wanted.

    Definitely superior to a mains switch power cycle (remember you switch off the hotend's heatsink fan too then, allowing the heat from the hotend to climb up... ) in any case.

    So, what is the reason that the BB controller does not have a button there? - Or does it? I never read here, ' I hit the reset switch'. And I dont see one in the LCD cover.

    Cheers,
    U.
     
  2. Chase.Wichert

    Chase.Wichert Well-Known Member

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    I'm not sure why it isn't there, a lot of people are also wondering why there isn't a hole for the contrast dial... I think one could be made and a hole drilled out potentially..
     
  3. Chase.Wichert

    Chase.Wichert Well-Known Member

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    I think I may work on this today actually, print a button, and drill a small hole.
     
  4. UlrichKliegis

    UlrichKliegis Well-Known Member

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    And if that fails, you have all means at hand to print your own fancy cover.
    BTW, a view of the LEDs on the rumba board would also be nice, there is more to them than just some blinking. OK, jigsaws exist. And tool #1.
     
  5. Chase.Wichert

    Chase.Wichert Well-Known Member

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    Ohh, maybe some polycarbonate filament as a light guide, you could position some PC right above the LED's then have them pressed into small holes on the outside base of the BB?
     
  6. R Design

    R Design Well-Known Member

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  7. elmoret

    elmoret Administrator

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    I have a laser cutter and can do clear acrylic electronics covers if folks are interested?
     
  8. Chase.Wichert

    Chase.Wichert Well-Known Member

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    I was thinking about that, but then you could see all my nasty wiring..
     
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  9. Chase.Wichert

    Chase.Wichert Well-Known Member

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  10. Archania

    Archania Well-Known Member

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    Very nicely done Chase!
     
  11. PsyVision

    PsyVision Moderator
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    So you've 3d printed a button, is this on thingiverse along with information on the hole size !?
     
  12. Trevor

    Trevor Well-Known Member

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    Good idea Chase. However you may want to revaluate that 3d printed button. Housing the switch like that may lead to wear on the solder.
     
  13. Chase.Wichert

    Chase.Wichert Well-Known Member

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    Why would it wear on the solder?
     
  14. Trevor

    Trevor Well-Known Member

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    Because you're housing all 4 sides of the switch which is held by solder. And since you'll be pressing the button at an slight angle due to the panel of the acrylic, you may put stress on the sides of the switch.
     
  15. Chase.Wichert

    Chase.Wichert Well-Known Member

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    It is pretty loose, not a tight fit at all.
     
  16. Trevor

    Trevor Well-Known Member

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    It's just industry manufacturing rules on button design. Not saying your way doesn't work.
     
  17. Chase.Wichert

    Chase.Wichert Well-Known Member

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    So basically you should make a housing that sits on the pcb, and a plunger type thing that moves up and down inside the housing so the plunger only comes into contact with the button and nothing else?
     
  18. Trevor

    Trevor Well-Known Member

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    Not necessarily a housing freely sitting on top of the pcb (not sure what you mean actually) but you're correct, you want an extension that only comes in contact of the button on the switch. TBH what you have is probably fine as a quick hack method and not likely to fail as it may be seldomly pressed anyways.
     
  19. Chase.Wichert

    Chase.Wichert Well-Known Member

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    Right, I was meaning basically just something to keep the button moving up and down and not side to side, but yeah I understand. Good to know for the future!
     
  20. Trevor

    Trevor Well-Known Member

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    Gotcha. That "housing" to keep external buttons in place are usually attached to outer shells of products. But in the case of the bigbox i can see why you were thinking of somehow having that button housing along the pcb to avoid more modifications of the acrylic. May require a bit more thinking for a clever solution to avoid more drilling of the acrylic panel. Thus your method is the quick and easy out for now. :)
     

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