 | | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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(...) Chris, I was just wondering if there was a decline in performance in the enclosure as opposed to outside of it. The enclosure looks great! Eric Kingsley The New England LEGO Users Group (URL) (25 years ago, 6-Dec-00, to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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(...) I took a few close-ups of the sensor last night, and uploaded them to BrickShelf. Check out: (URL) first picture is the sensor itself with a few "common" objects nearby for scale. The second picture is my reproduction of the exact setup that (...) (25 years ago, 6-Dec-00, to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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"sebarile-MOBL" <steve.e.barile@intel.com> wrote in message news:G544x8.FnI@lugnet.com... (...) The web page you are looking for is: (URL) Gasperi (25 years ago, 6-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: RIS 2.0 content !!!
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(...) Unless you reboot a lot, it's not about how long it takes to load, it's about how long it takes to do common operations. That said, I have no idea how fast ME is on common tasks compared to 2000, but 2000 has been to my perception, a bit (...) (25 years ago, 6-Dec-00, to lugnet.robotics, lugnet.off-topic.debate)
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| | Re: RIS 2.0 content !!!
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(...) Try NT4.0. It is slow - very slow. Scott A (...) (25 years ago, 6-Dec-00, to lugnet.robotics, lugnet.off-topic.debate)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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Hi Chris, thanks for sharing this. I had the same positive results with reed sensors in my automated rail station. The station actually detects the incoming train through the well known light sensor + lamp method, but I wanted a way to distinguish (...) (25 years ago, 6-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: Books for Mindstorms
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(...) My copy of Extreme Mindstorms just arrived and let me tell you, for the advanced inventor it's GREAT! If your into Custom Sensors and out of the way sensors and what not THIS IS THE BOOK. It's written by the leading developers of the RIS's (...) (25 years ago, 6-Dec-00, to lugnet.robotics, lugnet.books, lugnet.robotics.rcx)
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| | Using Vision Command as a Smart Sensor
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Vision Command offers very limited control of the RCX. It would be nice if you could use VC as a smart sensor from a more convention RCX program with full control. After following the work of Rainer Balzerowski, I've got a pretty simple way to do (...) (25 years ago, 6-Dec-00, to lugnet.robotics, lugnet.robotics.vc) !
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| | For you German speakers
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If you can read German, you might enjoy the story of a grown man playing with Lego robots for a living: (URL) (25 years ago, 6-Dec-00, to lugnet.robotics)
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| | Re: RIS 2.0 content !!!
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(...) Mega Slow? I've got ME and it loads in about 10 seconds. 2000 Professional took about (minutes, seconds)1:30. Kevin (25 years ago, 6-Dec-00, to lugnet.robotics, lugnet.off-topic.debate)
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| | LEGO Company Welcomes Adult LEGO Enthusiasts
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There's a new TLC press release at: (URL) the good stuff: (URL) (25 years ago, 6-Dec-00, to lugnet.announce, lugnet.lego.direct, lugnet.org, lugnet.robotics) !!
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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(...) I just looked through my pictures and I was surprised to find that I don't have any that show the sensor. I will snap a few close-ups tonight... I also like the idea of doing a more formal write-up with pictures, schematics, and part sources. (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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At this point I don't have the sensor hooked to an RCX due to the fact that Santa hasn't brought me one yet (hint hint Santa). I currently have the sensor hooked into a Crestron Control system ((URL) The sensor is hooked to a digital I/O port that (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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James, Are they directly wired to the RCX or is there a resister in series. BTW where is the web page on the electrical specs of the RCX and home brew sensors? I can't remember. SteveB (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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Chris, Another great little sensor for train detection, via Radio Shack, is the little photo sensors they sell. I put them inside of a 2x4 technic plate and then snap them face up on the track. This way they use the omni light from the room as the (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | reed switch w/2^n series resister
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Chris If I understand correctly you can add a series resister to each reed switch using the formula r=2^n*R. Where n is the number of each switch (1,2,3...) and R is some resistence value that is friendly to the RCX. This way you can add several (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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(...) This is a great idea. I will talk to Chris about it and we can try and document it with pictures on the NELUG site. Eric Kingsley The New England LEGO Users Group (URL) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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(...) I know I didn't get a close up because my camera stinks for close ups. I think Chris may have gotten some but he hasn't uploaded his pic's just yet. If we don't have one now, we are having a meeting in a couple weeks and we will make sure to (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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(...) 1) take a section of straight track. 2) take a light gray 2x4 plate and place it so that it spans the 2-stud gap between two of the ties. 3) imagine a very thin silver piece lying on that. That's it. Most of the people I talked to about it (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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Wonderful info! If I could be so bold... On the PNLTC web site we have articles that discuss various building and other techniques. This reed switch discussion and design review would make a great article (with some pics & schematics) for NELUG! (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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(...) Is there a photo that clearly shows the sensor in a fairly tight closeup so that it can be judged how obtrusive/invisible it is? I skimmed through many of the photos posted by you, Dave, and Tim but did not see one, although I may have missed (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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(...) I might just add that while this was a bit over my head it work extremely well and the sensor itself was very small and unobtrusive. It was a non-LEGO solution but I loved it and recommend it. I think with some reworking it may even be (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: "No Contact" Homebrew Train Sensor for Mindstorms
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(...) I used a touch sensor that slightly elevated the track, detecting the mass of train cars; it was coupled to a scout in a switch-house, and the thing would just toggle a point whenever a train went by. 100% reliable, but ... kinda ugly, and (...) (25 years ago, 5-Dec-00, to lugnet.robotics)
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| | USB Tower & Linux? (Re: RIS 2.0 content)
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(...) Anybody got news whether it works with Linux? Does it still need a battery? Jürgen (25 years ago, 5-Dec-00, to lugnet.robotics)
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| | Re: Old Contest at BrickBots.Com - Aluminum cans
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(...) The BEST kit to get to really get a good selection of parts is another RIS kit. ;-) The other kits that I picked up are long gone and I haven't seen anything lately that I feel would really aide. If you can get the robo sports kit on sale it (...) (25 years ago, 5-Dec-00, to lugnet.robotics)
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| | "No Contact" Homebrew Train Sensor for Mindstorms
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As has already been reported by others, I built an automated railroad crossing for the NELUG train display at last weekend's Greenberg show. I wanted to take a moment to describe the "homebrew" sensor that I used to detect an approaching train so (...) (25 years ago, 5-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: RIS 2.0 content !!!
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(...) No, 98 Means 98 and 98SE. ME does mean the new Mega Slow Millennium Edition. (...) Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 5-Dec-00, to lugnet.robotics)
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| | Re: RIS 2.0 content !!!
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How about read these pages in "almost" english? Use (URL) of (URL)the box : (URL)programming : (URL)parts : (URL) (25 years ago, 5-Dec-00, to lugnet.robotics)
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| | Re: RIS 2.0 content !!!
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Also, there is 718 pcs inside. Therefore, the box tells us that Windows 98/Me (Millenium Edition ???) is required ? If Lego excludes W98 or other, it is bad news... A good news : the IR Tower uses USB. - Christophe - (25 years ago, 5-Dec-00, to lugnet.robotics)
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| | RIS 2.0 content !!!
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Hello, just see it here : the box : (URL) : (URL) : (URL) the parts, see the new design for the IR Tower, and a new "fiber optic" link for the MicroScout I presume. About programming, it seems to include some vision command stuff. - Christophe - (25 years ago, 5-Dec-00, to lugnet.robotics) !
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| | Re: simple programming?
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Have you tried Rick Overmars' RCX Command Center? It includes two interfaces for direct control of the RCX. I think it's open source. (...) -- ___...___ $50,000 reward for Jill Behrman: (URL) one of you has a hundred sheep and loses one of them. (...) (25 years ago, 5-Dec-00, to lugnet.robotics)
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| | LEGO Mindstorms forums (and HoF) are back!
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Dear All The LEGO Mindstorms forums are back! As of this evening the forums have recommenced normal operation at (URL) . The winners of the July-August 2000 Hall of Fame are now up. The new Hall of Fame contest will run Dec 2000-Jan 2001 and is for (...) (25 years ago, 5-Dec-00, to lugnet.robotics, lugnet.robotics.rcx, lugnet.general)
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| | Re: Books for Mindstorms
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Clive Wadham <clive.wadham@talk21.com> wrote in message news:G4yq3H.n4o@lugnet.com... (...) Neither of these appear on the USA Amazon site. I assume you were referring to a UK version? --Jack Gregory (25 years ago, 5-Dec-00, to lugnet.robotics, lugnet.books)
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| | Re: Books for Mindstorms
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(...) It depends what you want from a book! I have a few of them and in my opinion..... "Dave Baum's Definitive Guide to LEGO Mindstorms" is a good general intro + loads of good projects and models + loads of NQC "The Unofficial Guide to LEGO (...) (25 years ago, 5-Dec-00, to lugnet.robotics, lugnet.books)
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| | Re: NCQ 2.2
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(...) The details are in the release notes... (URL) a high level, the major improvements include new features for Scout and RCX 2.0 support. Plus a few minor bug fixes and tweaks. Dave (25 years ago, 5-Dec-00, to lugnet.robotics)
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| | Re: Books for Mindstorms
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Ok, which one is the best? Rose Clive Wadham wrote in message ... (...) Action)" (...) Knudsen; (...) (25 years ago, 5-Dec-00, to lugnet.robotics, lugnet.books)
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| | Re: motorized points - finally got it!
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Here's some pics on brickshelf. Sorry that they are blurry, the digi-cam I have dosen't seem to do well at close range. (URL) No modifications where made on the switch! (...) (25 years ago, 4-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: Micro Scout powered scorpion
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(...) Thanks! I'm glad you liked it =). ~Nathan (...) (25 years ago, 4-Dec-00, to lugnet.technic, lugnet.robotics)
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| | Re: motorized points - finally got it!
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Very cool, Steve - glad you got it to work, and I'm looking forward to the pics. I've never tried rotating the motor vertically - doh! That allows the motor torque to be shifted to a different plane than the switch throw, so you won't have to use (...) (25 years ago, 4-Dec-00, to lugnet.trains, lugnet.robotics)
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| | NCQ 2.2
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Does anyone know what the differences are between NCQ 2.2 and NCQ 2.0 are? Thanks, Nick Hoff (25 years ago, 4-Dec-00, to lugnet.robotics)
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| | New website up with rotation sensor projects
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Hi all, After 2 years of fumbling I've finally updated my web pages. My new pages have some rotation sensor projects I've been working on. I have built them all with legOS, pictures will come soon. Currently I have: tachometer, stall sensor, speed (...) (25 years ago, 4-Dec-00, to lugnet.robotics)
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| | Photos of LIC Chicago, and Mindstorms Mall tour
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Dear All I have put up some photos of the new LEGO Imagination Center in the Shops at North Bridge Mall in downtown Chicago (520 N Michigan). Also some photos from the LEGO Mindstorms Mall tour which was at the Mall there 1-3 December. The shop is (...) (25 years ago, 4-Dec-00, to lugnet.robotics, lugnet.general)
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| | Re: Micro Scout powered scorpion
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That is so cool! I really like its prey. Great creation! -- Bob Fay rfay@we.mediaone.net The Shop (URL) McDowell" <Skiing_Scotsman@hotmail.com> wrote in message news:G51D7G.K37@lugnet.com... (...) (25 years ago, 4-Dec-00, to lugnet.technic, lugnet.robotics)
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| | Micro Scout powered scorpion
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Hey gang =) I just put pictures of my Micro Scout powered scorpion up at (URL) The parts mostly came from the Droid Developer kit but I had to throw in a few more gears and some other random parts. When the scorpion walks, it moves it's claws and (...) (25 years ago, 4-Dec-00, to lugnet.technic, lugnet.robotics)
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| | Re: motorized points - finally got it!
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Yippy I finally got it! I have created a motorized switch track that ran 100 switches via RCX without tearing the housing apart or missing firing! After 100 I got tired of counting and I just stopped it, so it might go for several hundred. It sits (...) (25 years ago, 4-Dec-00, to lugnet.trains, lugnet.robotics)
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| | Re: difference of generated code robolab<->NQC
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(...) They both generate the same "kind" of code (specifically LASM bytecodes), but its unlikely that code would be identical. I'm sure there are certain patterns of code that are typical from Robolab programs, and certain patterns that are typical (...) (25 years ago, 3-Dec-00, to lugnet.robotics)
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| | Re: variable conversion in legOS
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(...) This should work. Are you having problems with it? -Kekoa (25 years ago, 3-Dec-00, to lugnet.robotics)
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| | variable conversion in legOS
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Could we convert a "float" variable in legOS to "int"? Thanks Yiu (25 years ago, 3-Dec-00, to lugnet.robotics)
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| | Re: motorized points - beating a dead horse
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(...) I made a design that used a clutch gear and fit into a house. It worked very well when the switch was "warm" but wouldn't always trip it when it had been sitting for a bit. But it allowed the throw arm to fully though the switch one way or the (...) (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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Try this: (URL) On! John Matthews (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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Anyone know this address? Still hammering on solving this one! 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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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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| | 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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| | Navigation by sound?
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Hi, has anybody tried a setup like this: - The tower sends a message to the RCX. - The RCX beeps. - The beep sound is captured by two microphones on two neighbouring corners of the navigation space. - Their signal is fed into a stereo soundcard. - (...) (25 years ago, 30-Nov-00, to lugnet.robotics)
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| | mindstorms/robolab in uk schools
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hi - (especially if there are any uk teachers susbrcibed to this group....) i was wondering if anyone had any idea of what sort of penetration lego has achieved into schools with its rcx bricks via mindstorms/robolab kits, and the extent to (...) (25 years ago, 29-Nov-00, to lugnet.robotics)
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| | Re: 2 motors, different speeds
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I have a whole article on this very subject: (...) (25 years ago, 29-Nov-00, to lugnet.robotics)
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| | RE: Hi there
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Depending on your lego skills, it would be better to follow a few simpler designs at first, building the bot is only about half the battle the other half is getting the code to make it do what you want. You need experience with sensors, motors, how (...) (25 years ago, 29-Nov-00, to lugnet.robotics)
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| | RE: Mindstorms book
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I bought the O’reilly book and it has a lot of helpful information in it, especially about sensors, he likes forth as a language ( I gave up on that one about 15 years ago, because of lack of documentation) but does do quite a little with NQC, I (...) (25 years ago, 29-Nov-00, to lugnet.robotics)
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| | Re: 2 motors, different speeds
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You can put rotation sensors on each wheel, and then monitor them for changes. If one gets ahead of another, then slow that motor down. This works well, but differences in the wheels cause it to turn slightly. Andy (...) (25 years ago, 28-Nov-00, to lugnet.robotics)
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| | Re: Ball-less mice (was :Re: FW: Another DIY sensor)
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(...) I can confirm this, at least for the US market; I just bought the Logitech optical wheel mouse, and it was $30 at Fry's in Campbell, California. (25 years ago, 28-Nov-00, to lugnet.robotics)
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| | Re: Lego Mindstorms Europe Demo Tour
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Hi all, (...) no problem with that. BUT ! We took part at the Lego VisionCommand 2000 Competition in Germany. We build an synchrodrive without lego turntables. The Lego chief engineer (don't remember the name, Steven ?????) toke a look at it an was (...) (25 years ago, 28-Nov-00, to lugnet.robotics)
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| | Re: Lego Mindstorms Europe Demo Tour
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(...) I suspect the custom pieces that make their way into sets began life as a modification of an existing part. After all, I doubt they wanted to make a custom mold until they were certain it did what they wanted it to. John A. Tamplin (...) (25 years ago, 28-Nov-00, to lugnet.robotics)
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| | Re: Lego Mindstorms Europe Demo Tour
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Andy Lynch wrote: >There were also some other bricks modified to press into the touch sensors >on the blue robot. There may have been more, but I stopped looking at that >point. > >Don't get me wrong, the robots were *still* impressive, but I was (...) (25 years ago, 28-Nov-00, to lugnet.robotics)
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| | Re: 2 motors, different speeds
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(...) Yes I think you're expecting too much. :) Two "identical" motors will go at a *similar* speed if set to the same power level, but chances of them going at the *same* speed is highly unlikely. Bryan (25 years ago, 28-Nov-00, to lugnet.robotics)
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| | Re: Mindstorms book
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(...) Of course there are in internet, but what if you don't have it ? Think about 12+ years old kids !?! Rainer (25 years ago, 28-Nov-00, to lugnet.robotics)
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| | 2 motors, different speeds
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I have two motors set to the same power levels, but one is always going slightly faster than the other. I've tried it at different power levels but still the same result. Am I expecting too much for them to go at the exact same speeds? Or am I (...) (25 years ago, 28-Nov-00, to lugnet.robotics)
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| | Ball-less mice (was :Re: FW: Another DIY sensor)
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The optical mice that do not require a special tablet to operate all use the same sensor, made by Agilent (formaly HP). It is the HDNS2000. The spec can be found here: (URL) this thing has 2 types of output: - PS/2 (connects directly to a PC) (used (...) (25 years ago, 28-Nov-00, to lugnet.robotics)
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