 | | Re: motorized points - beating a dead horse
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Great tip, I never thought about using multible pulley/rubber bands! A big problem is the detent, the two at rest positions are very "sticky". Naybe more then multible rubber bands can even move. I'll give it a try. SteveB (...) (25 years ago, 3-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: motorized points - beating a dead horse
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Thanks Larry! And no need for embarassment I appreciate the help. SteveB (...) (25 years ago, 3-Dec-00, to lugnet.robotics)
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| | Re: Books for Mindstorms
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(...) Here's a couple - both by Robert Penfold: "Introducing Robotics with Lego Mindstorms"- ISBN 0-835934-2 (get it from Amazon) Lots of VB information "More Advanced Robots with Lego Mindstorms" - sorry, I don't know ISBN (25 years ago, 2-Dec-00, to lugnet.robotics, lugnet.books)
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| | Re: motorized points - beating a dead horse
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(...) I'm not exactly sure about your setup (I'm not into trains), but how about a small pulley (half bushing) on the motor, driving a medium pulley (with the six holes) on an axle on whose other end is an 8t gear that drives a rack. That setup (...) (25 years ago, 2-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: Books for Mindstorms
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here's another (only in Japanese, but construction figures and nqc code are understandable to non-readers of Japanese): Title (English & Japanese) Written in List Price (\) Quantity Amount Jin Sato*s LEGOMindStorms Japanese \1900 1 \1900 TETUJIN (...) (25 years ago, 2-Dec-00, to lugnet.robotics, lugnet.books)
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| | difference of generated code robolab<->NQC
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hi, i need to know if there is a difference between the code generated by Robolab and NQC. Both are running with the standard RCX Firmware, i also know that the compiled code of both is interpreted by the firmware. -> is the generated code the same (...) (25 years ago, 2-Dec-00, to lugnet.robotics)
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| | difference of generated code robolab<->NQC
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hi, i need to know if there is a difference between the code generated by Robolab and NQC. Both are running with the standard RCX Firmware, i also know that the compiled code of both is interpreted by the firmware. -> is the generated code the same (...) (25 years ago, 2-Dec-00, to lugnet.robotics)
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| | Books for Mindstorms
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The following books cover Mindstorms: 1. "Dave Baum's Definitive Guide to LEGO Mindstorms (Technology In Action)" by Dave Baum; November 1999 2. "The Unofficial Guide to LEGO MINDSTORMS Robots" by Jonathan B. Knudsen; November 1999 3. "Extreme (...) (25 years ago, 2-Dec-00, to lugnet.robotics, lugnet.books)
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| | Re: motorized points - beating a dead horse
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(...) Well, I'm sure glad I didn't point Steve at this other excellent Lego trains site then: (URL) would have been even more embarassing. Tilman (25 years ago, 1-Dec-00, to lugnet.robotics)
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| | Re: motorized points - beating a dead horse
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(...) Tilman, good info for the other folks reading along, but trust me, Steve Barile, as a founding member of PNLTC (either the oldest or second oldest, depending how you measure, Lego Train club ((URL) and grandfather to many of the rest of us (...) (25 years ago, 1-Dec-00, to lugnet.robotics)
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| | Re: Results for Aluminum Can Stacking Contest at BrickBots.Com
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(...) [SNIP] (...) I have found that mobile robots, and stationary 'machines' are very different design challenges. A bit over a year ago I had made all sorts of mobile robots and found myself in a rut of building certain structures and units over (...) (25 years ago, 1-Dec-00, to lugnet.robotics)
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| | Re: Results for Aluminum Can Stacking Contest at BrickBots.Com
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That first place machine - Wonderful! My congratulations. And a great scheme Rich. It is often a lot more difficult than it looks to make mechanisms as complicated as this work properly. (...) When I first got my RIS a year or so ago, I decided to (...) (25 years ago, 1-Dec-00, to lugnet.robotics)
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| | Results for Aluminum Can Stacking Contest at BrickBots.Com
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The Aluminum Can Stacking Contest ended yesterday, it was a ton of fun and here are the highly anticipated (at least for me) results: First Place, stacking 5 cans in 1 minute 25 seconds, earning 6 points Matt with his Stack Master 1000 - (URL) is a (...) (25 years ago, 1-Dec-00, to lugnet.robotics)
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| | Old Contest at BrickBots.Com - Aluminum cans
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First I would like to thank Richard Sutherland for Brickbots.com and his Contests. I tried to make a can stacker. I learned a few things first you can never have to many Legos. (Need more). Second his seemly easy contest was a lot harder than it (...) (25 years ago, 1-Dec-00, to lugnet.robotics)
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| | Re: motorized points - beating a dead horse
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Michael I can't seem to get to your URL. Can you check it and reply. I really can't wait to see what you have done. SteveB (...) (25 years ago, 1-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: motorized points - beating a dead horse
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You could try my switch - (URL) out for Lego and Models ... I build this thing using a rubber-band so you can let it run without the switch destroying itself. Just let the motor run a view seconds until the point switches it's position. Michael (...) (25 years ago, 1-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: motorized points - beating a dead horse
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There's a lot of activity around Lego trains. Clubs, fans, shows, web sites, and lots more. If you look around, you should find some suggestions. Try this page for starters: (URL) a page with some information on point motors: (URL) (25 years ago, 1-Dec-00, to lugnet.robotics)
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| | Re: motorized points - beating a dead horse
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(...) (note some heavyhanded snippage) Well, it wouldn't be entirely elegant unless you mounted the mechanics under your substrate, but if you were to gear down the movement so that the white clutch gear had to exert less torque to overcome the (...) (25 years ago, 1-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: motorized points - beating a dead horse
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Steve, If you are willing to use non-lego parts, there is a reliable solution. You can build a limit switch that does not use any sensor inputs. You need two "normally closed" switches, and two diodes. Solder a diode across each switch. Wire the (...) (25 years ago, 1-Dec-00, to lugnet.robotics)
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| | Re: motorized points - beating a dead horse
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Try putting belt drive stage in your geartrain so it can't destroy things and use touch switches to limit the travel... (25 years ago, 1-Dec-00, to lugnet.trains, lugnet.robotics)
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