 | | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) I'll see to it. --Todd (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | Re: Chaining multiple RCX's output to input
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(...) Pop a 10K ohm resistor in series with the motor. On my quick test with a variable resistor I got a value of 513 with the resistor at 9.7k. With a 10k resistor, the RCX raw value is now flickering between 510 and 511. P.S. same with the older (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | RE: Double echo
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(...) Yup. Dave tells me he is working on integrating the speedier loader into NQC or even making standalone loaders by themselves... Sergey, which features do you REALLY want/need for the next release. I'm doing the following... 1. ECHO_ON/ECHO_OFF (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Re: !!! Laser attachments for Mindstorms !!!
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I think that a good way to have a lasertag competition is to have an arena with many walls to hide behind, and have the robots programmed with different tactics of defense and offense. It's not hard to make an IR light beacon on top of each robot, (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | RE: !!! Laser attachments for Mindstorms !!!
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If you remove the lens from (I suspect) most pointers, you won't get a beam of light at all, even a conical one. Most laser diodes are essentially "point" sources, the light goes in any direction it can (think flat lightbulb). Moving the lens closer (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: stalled motor detection
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Shaft encoders are hard to beat. If the wheels are commanded to turn and aren't, that's a good indication that something is screwy. Plus, if you're doing dead reckoning, you need them anyway so they are already there! Gary Livick (...) (26 years ago, 27-Oct-99, to lugnet.robotics.handyboard)
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| | Re: stalled motor detection
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If a motor stalls, it draws a lot of current (compared to normal operation). You can measure that quite easilyusing dedicated chip, or by measuring the voltage over a small resistor in series with the motor: if more current is draw, the voltage drop (...) (26 years ago, 27-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Chaining multiple RCX's output to input
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Stephen Unwin <lego-robotics@crynwr.com> wrote in message news:Marcel-1.53-102...n.co.uk... (...) That makes sense cause the RCX has a 10K pulling the input up to 5V. The 10K you put in series with the motor will put the voltage at half way (2.5V) (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) I think that might have been me. I was sitting in the front row right across from Mitchel. (...) Rich (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | 1.0 to 1.5 upgrade
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Below are some products offered by (URL) I do not understand is that the upgrade kit from 1.0 to 1.5 can already be ordered, but the complete 1.5 will be available in January 2000. Can somebody explain? Harrie de Leeuw The Netherlands 9747 LEGO (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: IntelliMouse Ripe for Hacking
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This is the way to go. If you can rig a PS2 mouse to RCX, then the new optical mouse should work also. Kevin Loch <kloch@opnsys.com> wrote in message news:FK61A5.Ex7@lugnet.com... (...) so, (...) wonder (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: RCX with AC power - Still Available
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have the bot use scisors. James C. Jones <lego-robotics@crynwr.com> wrote in message news:v01540b02b43b87...121.26]... (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | 1.0 to 1.5 Upgrade Kit
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"The RCX Code can now be used to create more complex programs. Version 1.5 also has new tools like the Try-out tool that shows you what a block does and the Copy tool that lets you copy one or more blocks. All your programs from version 1.0 will (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) Aha -- Rich, thanks for stepping forward. I wasn't there until the very end of the meeting, so I missed your question, but I heard about it second- or third-hand. What was the answer to your question, and were you satisfied by it? What subset (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.robotics.events, lugnet.admin.general)
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| | Mindfest thanks
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Here's a big thank you to everyone at MindFest for a great time! I wasn't able to attend any of the workshops, but that didn't stop the time from flying. Unfortunately, I didn't get a chance to talk to everyone I met (sorry, Ralph H. Great talk BTW; (...) (26 years ago, 27-Oct-99, to lugnet.people, lugnet.robotics.events, lugnet.loc.us.ma.bos)
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| | Re: 1.0 to 1.5 Upgrade Kit
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Did some more surfing, and found this at (URL) MINDSTORMS introduces The Robotics Invention System 1.5 In response to customer requests to make the Robotics Invention System 1.0 easier for the new user to program and build we are releasing an (...) (26 years ago, 27-Oct-99, to lugnet.robotics)
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| | Re: IR questinos and more
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Hi Sergey, (...) if you intend only to transmit, you may just disable receiving altogether. (...) for an axle. yes, angle=rotation. (...) using the rotation sensor. otherwise, slippage may occur. night, markus. (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) Boy, It's almost a blur now. If I remember correctly, the discussion was about setting up a forum to discuss various issues brought up by Mindfest and its future. I suggested that LUGNET might be open to creating such a forum, but it was (...) (26 years ago, 27-Oct-99, to lugnet.robotics.events)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) OK, getting closer. I went more closely through a bunch of recent messages here, scanned a few more papers, and thought more about what Seymour Papert said in his talk, then culled what seemed like the core issues and wrote down a couple (...) (26 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | Re: Mindfest thanks
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(...) Bram, it was great honor to meet you finally -- I've been a great admirer of your LDraw work for as long as you've been doing it. Seeing those two trucks in person was also quite a mind-filler! :) --Todd (26 years ago, 27-Oct-99, to lugnet.people, lugnet.robotics.events, lugnet.loc.us.ma.bos)
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