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(...) It was quite an impressive array of modules. I wonder where the trains got emptied, and if there ever was an overflow in some module, given the enormous number of balls? Cheers Jürgen (18 years ago, 5-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) That got me thinking...we had a few ball counters going: Rafe's impressive digital counter, Greg's analog one, and Brian's optical one in the "penalty box" with all of my modules (heh heh). My question is this: is there agreement on what the (...) (18 years ago, 5-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) Actually, my counter was mechanical, in that each ball temporarily opened a normally closed touch sensor, and the RCX was just counting touches. For an optical one, you can use a ball breaking a lightbeam (two light sensors pointed at each (...) (18 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) Yeah, that's suspiciously absent from my video. I'm uploading another one now: (URL) Google version is really jerky I'm afraid.) This one starts with the train being loaded, but then follows the train to the next unloading module so you can (...) (18 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) I had success with a ball detector using only one light sensor in my little interactive get-the-ball-in-the-hole module. If the ball went into the hole, it rolled past a light sensor (old RCX version; is there a new nxt one?). Across from the (...) (18 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) Now that is a nice solution, and not one I'd thought of. Not having the silver brick, I could still use a (non-LEGO! Aaah!) solution of a small pice of reflective tabe or something. Cool. (...) I know that there's one power transformer that is (...) (18 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) I found a yellow LEGO rubber band on the TECHNIC table, so I took it home with me since most everyone was gone by that point. That's probably not a big deal, unlike an entire train regulator. :( (18 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) There are actually three ways to approach this: 1) Using something reflective on the far side of the ball chute - have the sensors light bounce back into the sensor - so the reading decreases when something gets in the way of the reflected (...) (18 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) I downloaded it completely and don't see any jerkiness, maybe that was due to streaming it as the bandwidth from Google was a bit low (< 100kB/s). (...) But then it may need to accept a lot of balls, if the other modules are quicker. I know (...) (18 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) You're correct, I was streaming it from Google which was probably the issue. (...) It doesn't matter how much quicker than the standard a single module is - if it only gets 1 bps, then it can only pass them to the downstream module at 1 bps... (...) (18 years ago, 6-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) I raised this issue in June when discussing GBC reliability, seeing that 1 bps implies a measured time interval. Of course, what is the interval?, I asked. The general consensus is that it is a 30 second time interval. As such, the worst you (...) (18 years ago, 7-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) LOL!! That may be an idea for next year. To come up with a mindstorms concept/competition that appeals to the other gender as well...maybe Bunnie or our significant others can come up with it! Dave (18 years ago, 7-Sep-06, to lugnet.robotics)
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| | Re: GBC at BrickFest 2006
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(...) That's the method I used on my own ball counter. During testing, I fed it with (counted) hundreds of balls, it never missed (or over counted) one. During LW2005 it counted about 15000 balls a day during a week... some wear now but still (...) (18 years ago, 7-Sep-06, to lugnet.robotics)
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