 | | RCX controlled GBC train drawbridge
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I suppose this doesn't have to really be for the GBC only, but that was why I decided to build it. I've been playing with this idea since Brickfest '06 when Steve Hassenplug suggested a way to go in & out of the GBC area without crawling under the (...) (18 years ago, 3-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: RCX controlled GBC train drawbridge
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(...) Very slick-looking John. It seems odd that one of the neatest attractions in the GBC may be only tangentially related to soccer balls, but that is a very nice design. I especially like the electrical cutouts at both ends. I have to ask, have (...) (18 years ago, 4-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: RCX controlled GBC train drawbridge
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(...) Not yet... No train. In fact, all the train track is borrowed from Steve H and Steve's Mom. I've got track on order, but nothing else. Someday maybe I'll buy a train ;) (...) Actually factored that in. At the bottom it is 10-wide, but the top (...) (18 years ago, 5-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: RCX controlled GBC train drawbridge
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(...) You'd need a hopper to store balls that arrive while the bridge is raised. You could probably rig a gate/door onto it that is open when the bridge is down and closed when the bridge is up. Or the entire hopper could tilt backwards with the (...) (18 years ago, 5-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: RCX controlled GBC train drawbridge
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(...) Ah, OK. No problem then, I was just worrying for a moment that you'd have to further modify the whole thing. (...) Cool. I have an additional 7.73 kg of AA's if we need them :-) (...) Not sure what you mean here. I was just picturing a (...) (18 years ago, 5-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: RCX controlled GBC train drawbridge
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On the other hand, why would the bridge need to carry balls at all? Just put the bridge on the section of track that separates the reliable modules from the unreliable modules' loop. But I suppose if the bridge does nothing at all with balls (not (...) (18 years ago, 5-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: RCX controlled GBC train drawbridge
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(...) I am 100% thinking along the same line. At first I thought of simply stopping the ball lift and immediately raising the bridge, letting balls along the slope drain backward into a hopper, but after watching the bridge raise and lower, I doubt (...) (18 years ago, 6-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: RCX controlled GBC train drawbridge
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(...) Not long at all. With the 3'+ slopping double-beam track I had at BF '06, I think it only took less than five seconds for them to clear the end... and that was for a *very* shallow slope. Given the time it takes to lift and lower the bridge, (...) (18 years ago, 7-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: RCX controlled GBC train drawbridge
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(...) Heres a thought. Just have the slope going in the other direction. That way when it lifts, the balls keep rolling the same direction. (Faster and efficient!) If the raising is too bumpy, just find a way to place a third or fourth overhead rail (...) (18 years ago, 7-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: RCX controlled GBC train drawbridge
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(...) One down side here, is that the "ball-lift" must be shut-off when the bridge is raised, and the controller for the ball lift is on the "bridge" (other) side of the opening. But, along those lines, if there is a bin to catch lose balls, the (...) (18 years ago, 7-Feb-07, to lugnet.robotics, lugnet.org.us.laflrc)
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