 | | Re: Help me plan for Mindfest.
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Michael: If you're going to be traveling around Boston by "T," you'll want to get a day pass. (A one-day, unlimited use pass is $5.50--a very good deal. 3-day passes are also available.) You can grab these usually at any subway station, although (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | A java tool for real-time talking with people reading the same webpage.
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Hi, There is a java software called Wander at (URL) simply dragging and dropping a URL address or a Link to Wander window, you can see and talk to all the people who reading the same webpage right now. It is a good tool for on-line talking, (...) (26 years ago, 15-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Help me plan for Mindfest.
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(...) I have my doubts; tokens are cheap. You have to take seven rides/day for that to make sense. And that's a lot of riding on the T. (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | Re: Help me plan for Mindfest.
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I should have written, "... a pretty good deal." The pass is not advantageous if one is just going to one place and returning from it once in a day. However, Michael wrote: "Things don't start at MindFest until 4pm Friday night, so I plan to tour (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | Re: More powerful motor (was: stuff)
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You need to be careful if you use more powerfull motors with lego construction. The plastic parts are very strong but you can easyly break teeth off of the gears or twist the rods with the current motors and a little bit of gearing. On the other (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | RE: Help me plan for Mindfest.
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<snipped Eric's description of how to get around> Eric, this kind of information is great! I'm going to be at Mindfest and my NLSO architect will be lollygagging around the downtown Boston area. Now it looks like I'll have all the info we need to do (...) (26 years ago, 15-Oct-99, to lugnet.loc.us.ma.bos, lugnet.robotics, lugnet.robotics.events, lugnet.org.us)
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| | Help me, too.
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Hi, I'm going to Mindfest. But I need help about transportation in Boston. Airport Longan to Amerisuites Hotel in Medford (116 Riverside Ave) Hotel to Tufts University Hotel to MIT Thanks a lot of and see you in Mindfest, Hazel Diaz San Jose, Costa (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | More powerful motors
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I am curious to know why you think you would need to amplify the RCX motor outputs? The Lego motors are very efficient under no load. But the bridge drivers in the RCX seem to cope with the stalled state (about 250mA). Unless you are going to use (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | Re: More powerful motors
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I would like to see an RCX control a really fast RC car. It would be cool to see it pilot it flawlessly around a circle track. (...) Joel Shafer joel@connect.net (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | RE: Help me plan for Mindfest.
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Wait... For those of us staying at the Marriot, ther should be a free shuttle from the airport, right? I'll check up on this and let you know... Cheers, Ralph Hempel - P.Eng ---...--- The train stops at the train station, The bus stops at the bus (...) (26 years ago, 15-Oct-99, to lugnet.loc.us.ma.bos, lugnet.robotics, lugnet.robotics.events, lugnet.org.us)
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| | Re: interfacing the GP2D12
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Thats great Gary, This was the same conclusion that I'd come to myself, however I've now run into another problem with the otherwise brilliant 'D12 sensor. I'm currently using the Digitalker speech system from Jameco, and when the 'D12 is plugged in (...) (26 years ago, 14-Oct-99, to lugnet.robotics.handyboard)
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| | RE: stuff
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I've always assumed the material is polystyrene, probably a modified resin for impact resistance. You could basically eat this stuff, it's used for plastic forks, etc, but I wouldn't smoke it ;>) As to motors, several folks including myself, have (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | Lego Rotation Sensor
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Hi there, I'm just back from a sneak view on the brand new Lego site. I noticed that it's now possible to order the rotation sensor as a spare part. My question is: can someone explain me how the sensor is build-up internally ? (did anyone open such (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | Re: Help me plan for Mindfest.
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There may or may not be a free shuttle but my advice is learn the T. Even if you're only in town for a weekend, it's a much better way to go. Plus the trains are much tighter headings than the 1/2 hour heading a shuttle is likely to be on. A cab (...) (26 years ago, 15-Oct-99, to lugnet.loc.us.ma.bos, lugnet.robotics, lugnet.robotics.events, lugnet.org.us)
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| | Re: Flex Cables (Does anyone have the 8485 CCII)
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Phil Watt <wattsup1@earthlink.net> wrote in message news:38073CB0.716941...ink.net... (...) I know all of the listed sets use the Type II. I believe the 5118 is Type II as well, I'll verify tonight along with the 8485 cable lengths. -Rob. (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | Re: Help me, too.
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(...) I am not real sure where the Amerisuites in Medford is but I will check a map if I get time. There are a few "T" stops (Red Line) in Medford so there is probably a good chance that you can use the "T". (...) I believe Tufts is in Medford so (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | Re: Lego Rotation Sensor
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ludo soete <ludo.soete@village.uunet.be> wrote in message news:FJnqLo.87@lugnet.com... (...) part. (...) internally ? (...) I have not cut one open yet, but I'm pretty sure it is an optical encoder. I tried to detect magnetic fields from outside it (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | Re: stuff
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(...) I've heard that LEGO bricks are made from ABS. later, greg (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | RE: stuff
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Just by way of clarification, ABS is a terpolymer (alloyed, if you will) of polystyrene: Acrylonitrile Butadiene Styrene. Jeff jeffrey.hazen@northmill.net (...) I've heard that LEGO bricks are made from ABS. (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | RE: Help me plan for Mindfest.
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(...) <snipped out more gory transit details...> (...) Hmmm, Larry does not live in Boston, and yet he is intimately familiar with the transit system. Coincidence, I think not. The more likely explanation is that he is obsessed with trains, and (...) (26 years ago, 15-Oct-99, to lugnet.loc.us.ma.bos, lugnet.robotics, lugnet.robotics.events, lugnet.org.us)
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| | Re: Help me plan for Mindfest.
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The Green Line runs real, honest-to-goodness trolleys. They are quiet and fun. One of the sad developments of the last few years has been the disuse of the trolleys in the favor of buses. (For that matter, I now drive a daily 20-minute commute from (...) (26 years ago, 15-Oct-99, to lugnet.robotics)
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| | Re: Help me plan for Mindfest.
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(...) Well, I WILL admit I had a mockup of a green line car partially completed but I just could not get a center pivot that looked good from the outside, worked, and would at least allow a minifig (turned sideways so he was only 1 stud wide) to (...) (26 years ago, 15-Oct-99, to lugnet.loc.us.ma.bos, lugnet.robotics, lugnet.robotics.events, lugnet.org.us, lugnet.trains)
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| | Re: Flex Cables (Does anyone have the 8485 CCII)
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(...) Happened to be carrying out a parts inventory of my #8485 CC (*not* CCII) which recently arrived from DYA France. Here are the actual measurements of the flex cables - overall lengths followed by the lengths between the notches, in (...) (26 years ago, 16-Oct-99, to lugnet.robotics)
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| | Re: Help me plan for Mindfest.
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Eric Kingsley <kingsley@nelug.nospam.org> wrote in message news:FJnF0x.rn@lugnet.com... (...) Many thanks Eric. You can bet I will have a folded up copy of those instructions in my pocket Thursday night. Mike G. (26 years ago, 16-Oct-99, to lugnet.loc.us.ma.bos, lugnet.robotics, lugnet.robotics.events, lugnet.org.us)
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| | The Unofficial Guide to LEGO MINDSTORMS Robots
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I'm pleased to announce that my book has been printed and is now in stock in our warehouse. It should be showing up in your favorite bookstores soon. The entire book will be serialized online. Currently the Preface and chapters 1 and 2 are online (...) (26 years ago, 16-Oct-99, to lugnet.robotics)
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| | Re: The Unofficial Guide to LEGO MINDSTORMS Robots
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An Oreilly book for Mindstorms??! Cool! Hey, who decides what animal goes on the cover? The author(s)? The publisher? KL (...) (26 years ago, 16-Oct-99, to lugnet.robotics)
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| | Re: Flex Cables (Does anyone have the 8485 CCII)
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C S Soh wrote in message <3807D69E.34C3F7E3@s...com.sg>... (...) followed by (...) from the (...) I concur! -Rob. (26 years ago, 16-Oct-99, to lugnet.robotics)
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| | UK Suppliers
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Can anyone help me? I'm looking for a UK supplier for the Handyboard, either as a kit or complete. I would also like some advice about how I could integrate the Handyboard into a A-Level physic department. I'm interesting in introducing robotics (...) (26 years ago, 16-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Data acquisition through analog input
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Mr. Han, I think you can try to transmit the data through radio frequency transmitter to the receiver which is connected to the PC. I have tried this but it is digital data and not analog. Thanks, Wil. ----- Original Message ----- From: Chul Hun,Han (...) (26 years ago, 16-Oct-99, to lugnet.robotics.handyboard)
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| | Re: BrainStorm version 1.0 available
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Forwarding to lugnet.robotics.logo from lugnet.robotics.rcx... --Todd (...) (26 years ago, 16-Oct-99, to lugnet.robotics.logo)
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| | Re : stuff (Big motor control)
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The following circuit should provide directional control of a DC motor using two SPDT (Single Pole Double Throw) relays and four diodes, but may not act quick enough for a PWM drive. .--------O---...---. | | | | | O---...---. | | | | | \----/ \----/ (...) (26 years ago, 16-Oct-99, to lugnet.robotics)
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| | Re:Solved?? rotation sensor problem
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On Sep.10,I posted the message regarding rotation-sensor problem. I realized that the first threshold value '0x6fc0' in CURRENT_STATE is too small. Some sensors give raw values around 0x7000. #define CURRENT_STATE (raw<0x6fc0?STATE_0:...STATE_3))) (...) (26 years ago, 17-Oct-99, to lugnet.robotics.rcx.legos)
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| | Control your Lego Mindstorms RCX across the internet using Microsoft NetMeeting
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The WebRemote Device Controller allows you to control devices across a NetMeeting connection... If you have devices to control then you simply run the device controller, add the drivers for your devices and connect to NetMeeting to make the devices (...) (26 years ago, 17-Oct-99, to lugnet.robotics)
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| | AI
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Can we make these things learn? I'm no expert on AI or nothing, but perhaps by making, for example, program 1 write program 2, write to program 3 etc, and use a some kind of a genetic algorithm to determine best output. Or would all this be (...) (26 years ago, 17-Oct-99, to lugnet.robotics)
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| | Interfacing 2 Ultrasonic Modules onto one HB?
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I am trying to interface two Polaroid 6500 ultrasonic ranging modules onto one HB to simplify my project. I know this has been done and it is probably very easy but I am not an electrical engineering expert and cannot figure it out. I have two (...) (26 years ago, 17-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Position Finding/Mapping
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Okay. Here is an update. I decided on a platform like the one on this page. Synchro Drive I have bought and finally recieved all the parts nessesary. It is going to use 2 rotation sensors to measure distance, and the angle of the wheels relative to (...) (26 years ago, 17-Oct-99, to lugnet.robotics)
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| | Re: Interfacing 2 Ultrasonic Modules onto one HB?
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Hello, I also would like to see a example of the sonars and expansion board hook-up. I also have a vector 2x compass module that was connected and working before the expansion board was added. Is it possible to connect the sonar and compass to the (...) (26 years ago, 17-Oct-99, to lugnet.robotics.handyboard)
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| | Re: !!! Laser attachments for Mindstorms !!!
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Are you talking about *real* lasers that can cut things? Or just one of those LED pointers? --Tobias (...) (26 years ago, 17-Oct-99, to lugnet.robotics)
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| | Re: !!! Laser attachments for Mindstorms !!!
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Tobias Möller <tobias.moller@telia.com> wrote in message news:FJr4ut.Ez8@lugnet.com... (...) considering that a cutting laser starts around $290,000, and requires much more room than 2 Lego bricks, I would venture to guess that it is a laser (...) (26 years ago, 17-Oct-99, to lugnet.robotics)
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| | Re: Upcoming _Star Wars_ Mindstorms and Technics Releases
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(...) But the R2-D2 set (9748 Droid Development Kit) -is- a MindStorms set. It's just not an RCX-based MindStorms set. (LEGO MINDSTORMS is a whole division of TLG and a whole product line. The RCX is just one brick in a series.) MINDSTORMS != RCX (...) (26 years ago, 17-Oct-99, to lugnet.robotics)
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