 | | Re: Ultra Sonic Sensor Readings
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(...) OK. I'll read up. At the moment, I'm staring at a midium size paper cup. I think I'll slice it in half and see how good a reflector it is. I suppose the studs on an 8x8 plate were probably acting like baffles in my last experiment. (18 years ago, 3-May-07, to lugnet.robotics)
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| | Re: RCX vs. NXT
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(...) Well the nxt guy has got to be Brandon who was also in action at Atlanta. (URL) (18 years ago, 3-May-07, to lugnet.robotics)
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| | RE: RCX vs. NXT
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No, these are for Lego-geeks only, who can recognize a Mac/PC parody using NXT/RCX instead. Very clever, kudos to the team that put them together. Alas, if you're looking for an academic comparison between the two, this isn't the place to find it. (...) (18 years ago, 3-May-07, to lugnet.robotics)
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| | Re: RCX vs. NXT
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(...) LOL they're actually quite funny (the NXT/RCX ones, not MAC/PC). Especially rookie.mov. ROSCO (18 years ago, 2-May-07, to lugnet.robotics)
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| | Re: RCX vs. NXT
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(...) Full of lies, distortions and half-truths? I'll skip it, thanks. (18 years ago, 2-May-07, to lugnet.robotics)
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| | RCX vs. NXT
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Check out these cool video clips about the RCX vs NXT from Iowa State University's College of Engineering. They are similar to the Mac vs. PC ads. (URL) click on NXT vs. RCX videos on the right hand side of the page. ___...___ Tonya Witherspoon (...) (18 years ago, 2-May-07, to lugnet.robotics)
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| | Re: RCX Motor Diagnostic Test
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(...) So ultimately you want as many matched pairs of motors as possible? I'm not at all sure why you need Robolab for this. 1) Set up all motors with identical loads (identical weights on strings hanging from pulleys, for example). 2) Power all (...) (18 years ago, 2-May-07, to lugnet.robotics)
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| | Re: Ultra Sonic Sensor Readings
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(...) No, but I can think of some ways to generate such data. Part of the problem is that weather or not the sensor sees a return depends on two spread functions: the spread of sound energy from the transmitter, and the spread fo sound energy (...) (18 years ago, 2-May-07, to lugnet.robotics)
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| | Re: Ultra Sonic Sensor Readings
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(...) Getting a return off a cylindrical or worse yet, spherical object is very difficult. The sound reflects off in every direction, pretty uniformly, and so little of it comes back to the sensor. I'm not sure about your idea for using multiple (...) (18 years ago, 2-May-07, to lugnet.robotics)
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| | Do you like functional programming?
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Message text written by "Jordan Bradford" (...) (URL) Lambda the Ultimate>: As you may know, we've been dicussing embedded language deign on the SRS group recently. May I post a copy of your email there? I'm reaaly going to have to read the (...) (18 years ago, 2-May-07, to lugnet.robotics)
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| | Re: RCX Motor Diagnostic Test
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Just a few general remarks on your setup/questions. There's a nice setup shown on Philo's page from when he compared the different LEGO motors, including some data sheets - maybe this is the type of data sheet you'd like to get? link: (URL) using a (...) (18 years ago, 2-May-07, to lugnet.robotics)
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| | RCX Motor Diagnostic Test
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Hello. I've been thinking for a while about the best way to test a large quantity of motors in a short period of time. The reason behind this is I mentor an FLL team, and we recently acquired somewhere in the vicinity of 50-100 motors from a (...) (18 years ago, 2-May-07, to lugnet.robotics, FTX)
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| | Ultra Sonic Sensor Readings
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I've read the previous postings on the ultrasonic (aka "echo locator" among my students). I'm experimenting to see what the cone of energy looks like. Does anyone have experimental data I can compare to? I also need advice of detecting the scatter. (...) (18 years ago, 2-May-07, to lugnet.robotics)
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| | Re: Control Lab - serial/USB
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(...) That's great news! It's good to have confirmation about the USB-Serial converter. Also, virually the only reason why I still use Windows occasionally is because of some LEGO apps that won't run on anything else. Have you made a gui, or in what (...) (18 years ago, 1-May-07, to lugnet.robotics)
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| | Re: Control Lab - serial/USB
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(...) I'd be interested in seeing it, if you don't mind. I also was going to use the Control Lab to control big train layouts, now that I actually have more than one LEGO train to control. :) (18 years ago, 1-May-07, to lugnet.robotics, FTX)
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| | Re: Control Lab - serial/USB
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(...) Yes, you can compile C# programs on the command line using the .NET Framework SDK. You can also install Visual C# 2005 Express Edition and use Microsoft's Visual Studio IDE. The API I'm designing won't be quite like NQC, though. NQC is (...) (18 years ago, 1-May-07, to lugnet.robotics, FTX)
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| | Re: Control Lab - serial/USB
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(...) I'm in the same boat as Doug, not having a control lab, but using several USB-> serial converters. I have had mixed experiences. Some converters have worked on everything I've tried (like my trusty Belkin F5U103-- no longer in production) (...) (18 years ago, 1-May-07, to lugnet.robotics)
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| | Re: Control Lab - serial/USB
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(...) I'm currently finishing an API in Java for the Control Lab (well, the missing part of code is for the temperature sensor...) My first project using it was the automatic control of a train yard during our last train show in Paris. (URL) For (...) (18 years ago, 1-May-07, to lugnet.robotics, FTX)
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| | Re: Control Lab - serial/USB
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(...) I know lejos exists... but I'm still getting to grips with NQC (if you know any good advanced tutorials except for the one Dave Boum wrote I'd be really interested). Would what you are developing be in any way like using NQC (possibly from the (...) (18 years ago, 1-May-07, to lugnet.robotics)
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| | Do you like functional programming?
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If so, this might be of interest to you. I saw it posted on (URL) Lambda the Ultimate>: (URL) The first article is entitled "A Recipe for controlling Lego using Lava." If you're not familiar with the (URL) Lava Hardware Description Language>, it's a (...) (18 years ago, 1-May-07, to lugnet.robotics, FTX)
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