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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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| | Re: motorized points - beating a dead horse
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I didn't take pictures, but I did it w/ some gearing and clever placement of a touch-sensor. The key part was that the touch sensor (though light or rotation would work) would sense when the switch was vertical; I then used the motor like a big (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | motorized points - beating a dead horse
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Hi All, Currently I am attempting to build an automated hump yard. The main problem I'm tackling is the RCX controlled motorized points. I've spent 7 hours over the last two days trying to build a motorized switch track that will run forever with (...) (25 years ago, 30-Nov-00, to lugnet.trains, lugnet.robotics)
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| | Cellular Automata
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Hi, Two new pages have been added to my website describing Cellular Automata, and how this can be used as a simple robot brain. Bert Artificial intelligence and machine learning www.bvandam.net (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | Re: RIS 1.5 kit
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You can get it cheaper in the UK. PC World are selling RIS1.5 for £109.99 - i bought three sets!! k "Craig Martin" <lego-robotics@crynwr.com> wrote in message news:191100324.41999...box.com... (...) (25 years ago, 28-Nov-00, to lugnet.robotics)
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| | Re: Recipricating motion problems
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This is a little short of 90 degrees. (URL) Fay rfay@we.mediaone.net The Shop (URL) Stern" <2busytobe@home.com> wrote in message news:3A2687F4.B93568...ome.com... (...) gear, i (...) but i (...) the (...) you (...) the (...) sure (...) supposed (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | Re: AW: Navigation by sound?
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Hi :) I was going to write about the need for the minimum of 3 point for a perfect TRIangulation etc.. but then, it just ocurred to me: One can use this err... "BIangulation" (eheh) technic (in theory... I just thought of this right now)) to direct (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | Re: Recipricating motion problems
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sorry but you lost me, whats a cam? If you mean an off center 40 tooth gear, i already tried that but it didn't work. i could get it to turn th other , but i could get it to turn it back again Jason (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | Re: Recipricating motion problems
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You need gears or a cam that allows an adjustment in the distance from the centerline of the shaft. A 24 tooth gear and a 40 tooth gear would allow you to accomplish such action. I find the cam is very useful as the driven element. You can always (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | RE: Ball-less mice (was :Re: FW: Another DIY sensor)
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Chris wrote: >The Lego rotation sensor supplies four different voltage values as it >rotates so that you can tell in which direction it is rotating. I thought >the ball-mice use disks with an optical sensor that senses lines on >the disk. Using the (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | AW: Navigation by sound?
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Hi, just passing by coming from sci.geo.satellite-nav it occured to me that even under best circumstances and assuming the robot to be on a plane area two microphones will not provide the position, or better said, it still might be on either one or (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | Real Basic or applescript tools.
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Hello, I have a project were I want to send messages to my RCXs' I would like to use applescript or real basic as I want to be able to have the RCX to be controllable from other non Lego related apps. I did some digging and there is an Applescript (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | Re: Ball-less mice (was :Re: FW: Another DIY sensor)
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Oh. I sort of figured that you took the stuff out of the mouse (i just went back and read all the messages ;), it just that I have an optical mouse and i wouldn't want to take it apart. if the rcx could read the outputs from the mouse directly, then (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | Re: Ball-less mice (was :Re: FW: Another DIY sensor)
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Jason wrote: >Doing a little research, I found out that, when >used with ps/2, mice are supplied 5 volts dc and have two data outputs, for a total >of 4 wires. I'm not sure how much power the rcx supplies, but optical mice should >be able to work (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | Re: Ball-less mice (was :Re: FW: Another DIY sensor)
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I just got a usb or ps/2 optical mouse (with a wheel!) for $20 at compusa. I'm not sure who is trying to get an optical mouse to work with the Rcx, but i'd like any information on it that they have. Doing a little research, I found out that, when (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | Recipricating motion problems
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I have two 24 tooth gears. The lower gear is one hole down, six holes over from the upper gear. Like so (the @ are where the center of the gears are): @ @***** ^1 2^ I need to make it so that by turning gear 1 continusaly, in only one direction, (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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