Subject:
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Re: The Great Ball Contraption at BrickFest
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Newsgroups:
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lugnet.events.brickfest
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Date:
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Wed, 17 Aug 2005 19:13:28 GMT
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Viewed:
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2712 times
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In lugnet.events.brickfest, Jordan Bradford wrote:
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I forgot to tape Gus (sorry, Brian!)
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Nothing to apologize about - Gus was out there “on his own” because we wanted to
make sure everybody *elses* modules got in. Gus has been videoed before. The
only thing I wanted a video of with respect to that was the amazed looks on so
many faces watching “him” :-).
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Thanks, Steve and Brian, for creating the GBC,
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You’re welcome, although I have to point out that a *LOT* more folks than just
Steve & I were involved in creating the standard, and there was a *LOT* of help
at BrickFest (Bryan, Greg, Kevin, Heather, Kathie, etc., etc.). Most
importantly, we did not “create the GBC” - a small group of people created the
standard and provided the infrastructure, but the Community created the GBC,
just like Moonbase, Castle, etc.
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Also, could either of you send me the RCX program
that runs the trains? I’d like to experiment with
that at home.
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I’d be glad to share my code with you if you like, but the secret is really
in the polarity switch assembly located at each station (a Hassenplug
brainstorm, BTW). When the 2x2 cylinders under the train baseplates bumped the
sensor wheel, it did two things: released a touch sensor (connected in series
with all the other station touch sensors) to signal the RCX, and threw a
polarity switch to connect that station’s mechanism to the RCX. When the RCX
provided power to the “station mechanism line”, only the station with the
polarity switch thrown actually got power. Net result was that any number of
stations could be run using just one output & one input. Steve & I wrote our
code completely independantly, and I have to admit I’m not happy with it yet.
Positioning the hoppers to within +/- 0.5 studs with an accuracy of more than
98% is... tough. Mine is in NQC, while Steve’s is in BrickOS (I think).
--
Brian Davis
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Message has 1 Reply:
 | | Re: The Great Ball Contraption at BrickFest
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| Okay, here's a low-res video of the GBC. It doesn't show my module for very long; the camera was still setting itself up to record and I thought I had stood there long enough, but I hadn't. Anyway, it runs for 9:39, has a couple spots where I had to (...) (19 years ago, 19-Aug-05, to lugnet.events.brickfest, FTX)
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Message is in Reply To:
| | Re: The Great Ball Contraption at BrickFest
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| (...) I taped the entire loop Saturday starting from my pirate ship. I forgot to tape Gus (sorry, Brian!) and the train unloading itself into the module just after Gus. The module layout on the high-maintenance side of the table changed after my (...) (19 years ago, 17-Aug-05, to lugnet.events.brickfest, FTX)
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