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Overview > Great Ball Contraption > Great Ball Contraption Discussion > The Brickworld Stackable Module

I'm a fan of Bryan's stackable module. I have built three and am about to assemble a fourth. This will be a great opening wedge to get the Texas LUGs doing GBC.

Let's talk about how the initial stack works at Brickworld Indy 2015, what stack organizers need to replicate it elsewhere (a base, a power feed, what else?) and what might be done to develop this module.

Does the wiki support attachments? It would be great to link from this thread to a current bill of materials and assembly diagram.

Posted by on 19 June 2015 at 20:02.

Here is the PDF of the instructions from the workshop. <file>Stackable_GBC,_rev_12.pdf<file>

Posted by Mjsweet on 23 June 2015 at 01:38.

Take two of the PDF of the instructions from Brickworld Chicago 2015.

I cant edit my own posts to fix mistakes?

Stackable GBC, rev 12.pdf

Posted by Mjsweet on 23 June 2015 at 01:41.

Observations from Brickworld Chicago 2015:

  • We used 8 - 9v train controllers to power 57 sub-modules, so about 7 or 8 per controller. We ran them at "4" ("6" is the highest setting). We tried up to 12 submodules on one controller, but it overheated at 12.
  • We wired them together in columns (two controllers to a column) for the simplest cable management. Still, some cable management conduit would have made for a cleaner (but non-LEGO) appearance.
  • The "4" power setting was fast enough. It was timed as running approximately 1 ball per second.
  • Only once over the weekend did a submodule get flooded and start leaking. Probably this only happened once because the GBC generally was running less than 1 bps. On a "faster" GBC, one might need a well-regulated module feeding the stack, or one might just run the stack faster than 1 bps.
  • Bryan's ramp and funnel catch performed very well, though some maintenance repairs were required to the funnel. (Axle pins and bricks worked loose from the pounding of balls.)
  • Now that we've achieved a reliable, modular 158-brick lift, a logical next step would be to create a reliable, modular widget to go back down.
  • There were interventions every couple hours or so. The most common problem was one of the "legs" of the "Technic Assembly" coming loose. Remarkable reliability.
  • Bryan build a custom base which 1) replaced the legs on the first four modules with a solid foundation and 2) set the first module's input basket to 10 bricks and 3) each subsequent module three bricks higher than the previous.
  • The back right leg protrusion with the 2 x 2 plate with one stud is the only thing that fastens adjacent submodules together. It was sufficient for our stack. However our "stackers" reported that they could feel the modules wanting to pull apart as they stacked near to the top. It's possible we were approaching the limit of that attachment method.

Will post a MPD soon.

Posted by ALittleSlow (administrator) on 23 June 2015 at 17:25.
Posted by on 4 July 2015 at 13:58.

This is an interesting idea. May be I can come up with something like this too. I do have some ideas...

Thanks to the building instructions I have build three of these. Might try to create one or two more to get the modules stacked.

Posted by on 5 July 2015 at 14:10.

Maico has come up with his own idea. I don't have the link handy, but it's on his YouTube feed.

Posted by ALittleSlow (administrator) on 10 July 2015 at 15:13.

Yes, Maico has posted a vid on YouTube: https://www.youtube.com/watch?v=TVNXTE7jryE

And another one: https://www.youtube.com/watch?v=9iNeYP0jQxE

Posted by on 13 July 2015 at 05:59.

Posted by ALittleSlow on 23 June 2015 at 17:25.

»Observations from Brickworld Chicago 2015: . . . some cable management conduit would have made for a cleaner (but non-LEGO) appearance.


. . . which leads to the question "how could cables be managed in a purist manner?"

Posted by on 13 July 2015 at 06:02.

[quote=Posted by Steve Jackson on 2015-07-13 at 06:02:59. . . which leads to the question "how could cables be managed in a purist manner?" « My first thought is...never mind, that's a bad idea. So is my second. My current thought is a) you put more forethought into the appearance of the connections than I did; I think there's a lot of room for improvement there, and b) if more improvement is needed, see if the cable management can be designed into the module.

The hardest part of an external, traditional cable management system might be elegantly accommodating a four-deep stack of connectors.

Posted by ALittleSlow (administrator) on 13 July 2015 at 15:57.

And my idea has been running on a first event too. I received one module from someone else. We will see what will happen on the next few events.

Event movie: https://youtu.be/Icc3f7Ba8q4

I haven't done any workshops...

Posted by on 6 August 2015 at 21:20.
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