 | | Re: Has the RIS 1.5 been discontinued??
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"Rahul Tarkunde" <lego-robotics@crynwr.com> wrote in message news:3A558E07.B59431...ptc.com... (...) If it's the same as the 1.0 then it's more like 24 x 12 x 6 inches (working from memory!), it's the biggest LEGO box I've got! Dan (25 years ago, 5-Jan-01, to lugnet.robotics)
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| | Re: proximity detection with laser?
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(...) One of the things I'm intending to do is to put two light sources in the robot and measure the distance between the (if available) two reflection "points" (or er... auras) It should work better with laser source, of course. But then, using (...) (25 years ago, 5-Jan-01, to lugnet.robotics)
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| | Re: Has the RIS 1.5 been discontinued??
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I asked one of my friend to bring IRS 1.5 for me from US when he comes back in end February, since they are not available in India. I had asked him to buy it on shop.lego.com. From your view I now doubt, if he gets 1.5 in time. What is the size of (...) (25 years ago, 5-Jan-01, to lugnet.robotics)
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| | Re: Has the RIS 1.5 been discontinued??
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(...) Sounds like "famous last words" to me. "Shipping in 30 days"? That's a long time for a mass-market consumer product. If i had a dollar for every time a backordered item was eventually cancelled...i could get pizza. A few weeks ago i would see (...) (25 years ago, 5-Jan-01, to lugnet.robotics)
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| | Re: Has the RIS 1.5 been discontinued??
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If that was the case why would shop.lego.com would take the backorders ? They are shipping RIS in 30 days. (...) (25 years ago, 5-Jan-01, to lugnet.robotics)
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| | Re: Canadian price goof up...
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Just ordered three. They fixed the price mistake just afterwards I guess. (25 years ago, 5-Jan-01, to lugnet.robotics)
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| | Re: GPS
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Vihung, Now that selective availability is off I routinely get 12-18 feet accuracy from my GPS. And, yes, the more satellites you've acquired and the more spread between those satellites the better your accuracy. Also notice that your relative (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | Has the RIS 1.5 been discontinued??
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I can't find the RIS 1.5 (or 1.0) anywhere anymore! Actually they all seemed to disappear in December 2000. All the stores that used to have quite a few RIS sets no have just the DDKs and a few RDSs. Is LEGO getting ready to release RIS 2.0? If this (...) (25 years ago, 5-Jan-01, to lugnet.robotics)
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| | Re: GPS
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(...) As a footnote: Notably, when SA is turned on, both GPS units must use the same satellites for this to work. (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | Re: GPS
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(...) First: That is not full military accuracy. As per (URL) provides two levels of service -- a Standard Positioning Service (SPS) for general public use and an encoded Precise Positioning Service (PPS) primarily intended for use by the Department (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | proximity detection with laser?
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The following idea just came into my mind. Will it work? Put a video camera and a laser projector on the mobile robot. The laser projector beams out a pattern of light. The camera picks up the pattern, then we deduce the robot's proximity by (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | Ping Pong Ball Lobber
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Hey! Competition time! I'm fairly new to the online LEGO community and regular competitions like this sound like a great idea. Glad you have the time to put into it. Cheers, Raoul (ICQ 17521252) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | Re: colleges && universities
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I used legOS and the Mindstorms in CPS 196: Programming under Uncertainty here at Duke. The course web page is at (URL) Littman is unfortunately no longer in academics, so I'd ask you not to contact him, but I'm very happy to answer any questions (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | Re: GPS
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(...) Since some month the accuracy is about 12 -15 meters. (When I'm right, then there was an error added before to lower accuracy) (...) You get a better resolution if the signal of the aother satellites is better (a higher level) The (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | RE: GPS
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GPS requires a clear, unobstructed view of the satellites in the sky. Forget about using it indoors. Earthquake researches use sensors that can detect movements of less than an inch. I don't know how they work, but it involves GPS to some extent. (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | Re: GPS
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(...) The reason you are getting better resolution is the US Government turned off selective availability (the random noise inserted into the timebase, then encrypted so military applications can use it). They reserve the right to turn it back on in (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | GPS
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OK. This is probably a bit off-topic ... but I am sure you will find this interesting ... I recently rented a car from Hertz with the NeverLost system - GPS Receiver, Street Maps and Business/Tourist directory built into one. Apart from the fact (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | Re: New Contest at BrickBots.Com - Stair Climbing Ends Today?
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Hi Bob, I am glad you agree, these contests have certainly caused me to stretch my building wings. Scoring is based on the distance to your target, the further your robot can throw, the greater your score. Alternatively, you could go for a target (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | Re: New Contest at BrickBots.Com - Stair Climbing Ends Today?
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Rich, I think contests are a great motivator for building. I am thinking about entering, and I have a question. The rules say "Place the target at a pre-determined location relative to your robot". Can this be any distance? How is the distance (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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| | New Contest at BrickBots.Com - Stair Climbing Ends Today?
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Hello All, Now that I am back from vacation and have digested hundreds of emails full of great lego information, I have finally had a chance to start the newest contest at BrickBots.Com: ---- Accuracy Over Distance Starts: 1/4/01 Ends: 1/18/01 Build (...) (25 years ago, 4-Jan-01, to lugnet.robotics)
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