 | | Re: Eliminate high-speed derailments forever! (and possibly void your warranty)
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(...) Electronics is one of my hobbys,and i wanted to know how they (Lego) build there speed controller. In fact,its a basic application of the LM317 regulator. More info abouth the LM317 can be found in a data sheet book from National Semiconductor (...) (25 years ago, 23-Aug-99, to lugnet.trains)
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| | Re: robotic rovers
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(...) FWIW, here's what I came up with given a couple of weeks: (URL) are some aspects I was happy with (e.g., easy removal of the RCX, transmission range of upward pointing RCX, durability of frame) and others I wasn't (e.g., I didn't have a second (...) (25 years ago, 23-Aug-99, to lugnet.robotics)
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| | Gasoline prices (was: Re: Conversation w/ a LEGO Rep)
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(...) I'm amazed by how much the price of gasoline in the U.S. has fallen in the past two decades. As far as I can remember, it's remained roughly steady at around ~US$.95 to ~US$1.40 per gallon since at least 1985, which was about when I started (...) (25 years ago, 23-Aug-99, to lugnet.general, lugnet.off-topic.fun)
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| | Re: robotic rovers
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I've finished the LDraw of my fourth and most current rover; it can be found at (URL) for anyone who'd like to see. Comments? Suggestions? Flame mail? ;) (25 years ago, 23-Aug-99, to lugnet.robotics)
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| | another robotic rover [DAT]
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This is my latest version of a rover with differential transmission. In the accuracy department, I'd have to say it's my most favorite, but it leaves a lot to be desired in the way of speed - the worm gears slow it down a lot. In the course of (...) (25 years ago, 23-Aug-99, to lugnet.cad.dat.models)
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