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In lugnet.robotics, Steve Hassenplug wrote:
> In an attempt to provide Technic & Mindstorms builders the same cooperative
> building opportunity that's available to Moonbase, Castle, and Town/Train
> builders at Brickfest, we present to you: The Great Ball Contraption. • ...
> Keep in mind, that was built by me, and just a couple friends. Imagine the
> madness when AFoLs from all over contribute their modules to one of the greatest
> works of moving LEGO artwork ever assembled...
>
> To learn more, check out the web site:
> http://www.teamhassenplug.org/GBC/
>
> Or if you have questions, feel free to post here.
But wait, there's more...
First, a friend (another Bryan) came over with his module, and then the next
day, we had a club meeting, where our whole LEGO club had modules. After
running Bryan's for a bit, I considered adding a "Maximum ball velocity" to the
Type 1 spec.
Bryan's Amusement park from heck...
... uses an RC buggy motor, spinning a liftarm to 'bat' balls up a slope. Due
to misfires, they didn't always make it up the slope, so he had to help them.
This clip also includes a good shot of the train, traveling point-to-point.
While you can see balls flying all over the place, no children, or windows were
damaged during the making of this video.
http://www.brickshelf.com/gallery/Hassenplug/GBC/Video/gbc-bryanb.mpg (6mb)
This video brought to you by Sprite. Obey your thurst.
Next, we configured the train to travel in a loop around the table, with all the
modules in the middle. I should note that the train CAN be configured as a
standard module, with 1 input, and 1 output in a straight line.
Luckily, this time, we had plenty of help finding stray balls...
http://www.brickshelf.com/gallery/Hassenplug/GBC/Video/gbc-loop.mpg (13mb)
Other info on the train: It's controlled by an RCX. Each station has 1 touch
sensor (attached to a wheel) that the train hits when it passes. (
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1068031 ) In the above video,
the train is traveling at 1/4 speed. After the touch sensor is pressed, the
train stops for 1/2 second, then backs up at 1/8 speed until the touch sensor is
pressed, again. Then, the unloading motor runs, until the "unload" touch sensor
is pressed, at which point, the train dumps. It waits for 1 second, then the
unload motor runs until the touch sensor is not pressed. Then, the train goes
to back to the loading station, where the loading motor runs for 7 seconds. At
that point, the train waits for what's left of 30 seconds, so the whole loop
always takes 30 seconds.
Also shown is a brown pneumatic module, which has a small compressor that runs
continuously, and two cylinder/switch pairs that flip each other.
On Sunday, our whole group got together. Here are some pictures:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=113135
And a short video. The clicking sound in the background is Bryan's module
shooting balls:
http://www.brickshelf.com/gallery/Hassenplug/GBC/Video/gbc2short.mpg (2mb)
And, a somewhat detailed video.
http://www.brickshelf.com/gallery/Hassenplug/GBC/Video/gbcv2.mpg (36mb)
As you can see, there are about 17 modules, built by 10 different builders.
If you want to know more details, feel free to ask,
Steve
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Message has 1 Reply:
 | | Re: The Great Ball Contraption 2.0
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| In lugnet.robotics, Steve Hassenplug wrote: (snip) (...) (snip) Nevermind the controls, how'd you build the hopper? ;-) I really like your solution, with the rotating arm that unloads it, creating an auto-reset for the hopper. I've been frustrated (...) (20 years ago, 21-Jan-05, to lugnet.robotics, lugnet.trains)
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Message is in Reply To:
| | The Great Ball Contraption
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| In an attempt to provide Technic & Mindstorms builders the same cooperative building opportunity that's available to Moonbase, Castle, and Town/Train builders at Brickfest, we present to you: The Great Ball Contraption. When it's assembled at (...) (20 years ago, 7-Jan-05, to lugnet.robotics, lugnet.technic, lugnet.trains, lugnet.events.brickfest, lugnet.events, lugnet.announce) !!
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