 | | Looking for 3225 Classic Train
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Does anyone know where I could get a 3225 for a decent price? Anyone have them on clearance locally? I would VERY much appreciate if anyone could help me out. If you wanted to trade for it, let me know too. Thanks. Tim Strutt 8^) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: Automatic decoupler designs?
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(...) If I used a magnet as a core and fixed it so it couldn't rotate, then the electromagnet could be normally off (couples as usual, always forcing the other knuckle to flip over). When you wanted to decouple you'd produce the opposite field and (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: RCX onboard timer and motor pulsing
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(...) PWM stands for "pulse width modulation". The LEGO speed control changes voltage as you turn the knob. An RCX turns the motor on and off really fast but always supplies full voltage. So half speed is a 50% duty cycle of full power, rather than (...) (25 years ago, 6-Jan-00, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: RCX onboard timer and motor pulsing
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Hi Ben, I think I missed something here. What is "PWM mode"? What language are you programing in? And what is the "internals page"? Thanks so much for pursueing this! I did pick up the Unofficial Guideo to LEGO MS Robots by Jon Knudsen but only (...) (25 years ago, 6-Jan-00, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: Automatic decoupler designs?
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I wonder if we'll ever see Kadee couplers made specially for LEGO trains? (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: Automatic decoupler designs?
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GMLTC had a design for uncoupling, and there have been others posting here speaking of this. Not much hard info is available on the GMLTC design in terms of pictures, but it uses horizontal prying, as you suggest. The idea of a switch engine with an (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: Greenberg Shows Newsletter
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(...) The Maryland Agricultural Center in Gaithersburg, MD. Jeff (...) (25 years ago, 6-Jan-00, to lugnet.general, lugnet.trains.org, lugnet.trains, lugnet.dear-lego)
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| | Automatic decoupler designs?
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LEGO train knuckles don't lend themselves to decoupling. Has anyone got a good design (either as part of a switch engine or fixed to the track) design for an automated separator? I'm close to an in-engine (but very ugly) solution which can pry a (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: RCX onboard timer and motor pulsing
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(...) I was just experimenting with this a few days ago. An RCX using PWM does a far better job of driving the LEGO train motors than the simple variable voltage from the LEGO train control. You can make a train creep around just above stall speed (...) (25 years ago, 6-Jan-00, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: dressed up a couple of links
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(...) best (...) You did a really great job. I'd like to see a video of it speeding down the tracks with its legs flipping up and down like a real centipede. It wouldn't be a bad idea to add some touch sensor to it so that if you touch its head it (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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