 | | Re: Pinguim: Some very interesting techniques
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(...) I was looking at this gallery today too and was very impressed. Make yourself known! Tim (20 years ago, 17-Dec-04, to lugnet.trains)
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| | Re: Grade Crossing Signal Thingy...
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(...) One approach is to use a linkage mechanism in which the gate is driven by a link that no matter how the motor rotates, never takes the gate below horizontal or beyond directly vertical. That of course introduces other issues, such as knowing (...) (20 years ago, 17-Dec-04, to lugnet.trains)
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| | Re: Grade Crossing Signal Thingy...
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I have a couple of newbie questions about things like this. First, how do you protect the motor? In this particular design it looks like you could actually rotate the arm past vertical, which I guess isn't a problem until you hit the ground on the (...) (20 years ago, 17-Dec-04, to lugnet.trains)
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| | Worlds Greatest Hobby Show St. Louis, MO
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The Gateway LEGO® User Group (GtwLUG) is going to be at the Worlds Greatest Hobby Show here in downtown Saint Louis, MO at the Americas Center from 10:00am to 8:00pm on the 8th and 10:00am to 5:00pm on the 9th of January. The show features vendors (...) (20 years ago, 17-Dec-04, to lugnet.announce, lugnet.events, lugnet.trains, lugnet.loc.us.mo, FTX)
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| | Re: Grade Crossing Signal Thingy...
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(...) Check the previous posts on (URL) the motorized cows. These use optical sensors to trigger cow head moooovement...I'm sure they could activate a level crossing using the same RCX optical detection scheme. -Rob A. (20 years ago, 17-Dec-04, to lugnet.trains, lugnet.robotics)
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