 | | Re: robotica on TLC
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(...) I agree that fully autonomous robots wouldn't stand much of a chance. But I think it would be possible to create some rather impressive 'bots that used on board intelligence in conjunction with input from a human operator. (...) My favorite (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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(...) Looks like toys to me. Really incredibly cool toys! Tilman's post supporting my "Toy" claim mentioned how torsionally flimsy the technic axles are. This could be used to take the backlash out of a gear train. Pull out four 48 tooth gears, two (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) Look into getting your son and yourself involved in the First Lego League. I judged some competitions last fall and it was a blast. Very worthwhile. (...) I too am a big fan. Though I would prefer it if they weren't quite so obvious about (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: Advanced Control strategies
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(...) Lack of floating point support could also be a bit of a problem. You could try legOS. I think you have about 32k available for programs, and there are very few restrictions. You could also do all the hard work on a PC. It's pretty easy to (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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(...) Yes, I've noticed this too - they like to run it through their fingers and make bracelets and whatnot from it. Perhaps it would be a good executive stress toy? :-) Jennifer Clark (24 years ago, 6-Apr-01, to lugnet.robotics, lugnet.technic)
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| | Re: robotica on TLC
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(...) I love this show also, they build 'robots' that have human computers, but they could be a robot easily, most of the time with a good enough software package. In the US version, there were brand new engines that had been installed on crashed (...) (24 years ago, 5-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) I think they are already doing that. Watch Battlebots carefully and you'll see many of the contestants aren't using a model aircraft type radio control - but instead have a computer joystick plugged into a laptop. Once in a while you'll see (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) I've been trying to start up a local Lego robotics group to do something like that - but so far, response from parents in the area has been disappointing. (...) They certainly do seed the junkyard for *some* of the activities - in the rocketry (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) What makes you say this? Why should cars in England corrode any differently from cars in other countries? TT. (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: List software?
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(...) ^^^^^ What?! That is completely new to me :-) On Linux, use mutt, this mailer does SSL and all sorts of fancy replies. (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Speaking of motors ( was:Re: More juice out of the standard motors.)
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Hope this is not off-topic, but I have a 8735 motor. The problem is that in runs for a little while (on full juice from the battery box), but then stops. It is a new motor, but when I try turn the stem by hand, I couldn't (without pliers). Is the (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Robot building in the news (non-lego)
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Short article: (URL) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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Wow, some of you get really defensive about this thing, Here is the reason why I started this thread. For every show they show on TV there will be someone who loves it and someone who wouldn't watch it even if you paid him/her to watch it. My (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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How about showing this on TV? (URL) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: Speaking of motors ( was:Re: More juice out of the standard motors.)
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Yes, it's a bad motor. Call Lego Customer Service and kindly ask for a replacement. The motor should spin freely when turned by hand. (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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Scientific American Frontiers on PBS ran a show, NATURAL BORN ROBOTS, last year. It was rebroadcast last night here in the Tampa Area. The show ended with a segment called 'Go Team' which covered Robocup 99 held in Stockholm. Teams from around the (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) I'm also a big fan of Junkyard Wars, they give my Rock Raiders figs someone to emulate. I think most of the seeding is done for safety reasons; I wouldn't want to be anywhere near someone trying to make their own rocket fuels/motors. Also, in (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: Advanced Control strategies
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Definately agree on LegOS, my final year Computer Science dissertation was on autonmous learning on an RCX with genetic programming, I used LegOS 2.5, great stuff full C++ if you can do it in ansi you can do it here... But I'd say the best place to (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) I didn't realize that expressing an opinion was being defensive. Personally I enjoy the conversation much more if the participants are at least a bit passionate about the subject. I realize this is contrary to U.S. culture with it's emphasis (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: More juice out of the standard motors.
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Mark Haye <mhaye(@)tivoli(.)com> wrote in message news:GA9p5z.JwG@lugnet.com... (...) 33% more voltage should also give you 33% more current, so power (i.e. voltage times current) should increase by 77%. But higher currents give higher (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) If you go to the website of the show, they say that *everything* in the junkyard is seeded. Everything that's there was put there by the show's producers. Not that it really makes the show less enjoyable. Although for some strange reason a (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) Yeah, DGPS would probably be accurate enough, assuming you could get around the no-lock problem. (...) I believe the on-board GPS receiver would still need to fix on the Navstar constellation, regardless of whether or not it was a (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | New Outdoor Robot Photos
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I took some new photos of a couple of my robots, and they came out pretty good so I thought I'd share them. The photos were taken outdoors in indirect sunlight, with a Canon Powershot S20 3.34MP mounted on a Velbon tripod. Post-processing consisted (...) (24 years ago, 6-Apr-01, to lugnet.robotics, lugnet.publish.photography)
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| | Re: Solar Cell Output in Direct Sunlight
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I have a Halogen uplight lighting a room and my solar cell will power a motor, with no load up to a distance of around '6 (3' work height) from the light pole. This will fluctuate according to the reflectance's of the ceiling, walls, etc. Rose (...) (24 years ago, 6-Apr-01, to lugnet.robotics, lugnet.dacta)
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| | Re: robotica on TLC
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Okay, gotta play the devils advocate and take this a step further. ;) Robot (noun). A robot has to have an onboard computer (processor) that is takes input from sensors and decides what to do with its outputs (actuators). It must be able to sense (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | droid kit at compusa $20
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Just letting everyone know, Compusa has the Droid developer kit for 19.99 (usa, 29.99 with a 10.00 mail in rebate) on sale through Saturday. (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | calculating sensor resistance (Ohm's Law)
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I've been helping my little sister with her RCX-intensive science project, but we just finished all the calculations and her results seem screwy. Does anyone who understands RCX internals and/or Ohm's Law have some time to look this over and make (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: calculating sensor resistance (Ohm's Law)
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hi Lauren, you're quiet right, the inside of the RCX (in touch-sensor mode) is ok, and Ohm's law is also. So the problem lies probably in the sensor used. The cheap resistive pressure sensors are totally non-linear, more expensive sensors are full (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | program wont stop running
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O.k., I've never had this happen before, and don't know why it's doing it now. A program as simple as: task main() { SetPower(OUT_A,7); OnFwd(OUT_A); } won't stop running after i hit the "Run" button on the rcx (1.5). Also, the little person in the (...) (24 years ago, 6-Apr-01, to lugnet.robotics, lugnet.robotics.rcx.nqc)
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| | Re: robotica on TLC
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(...) Well - wet climate, everywhere is relatively close to the ocean and they salt the roads in icy weather. Wet, salty conditions maximise corrosion rates. A new car can comfortably be rusted out in 5 years Contrast with Texas where the warm. (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: New Outdoor Robot Photos
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Love those shots. Beautiful pictures. I am so green with envy. -- Bob Fay rfay@we.mediaone.net (URL) J. Mabelitini" <micahx@kih.net> wrote in message news:3ACE3181.9605DB...kih.net... (...) (24 years ago, 6-Apr-01, to lugnet.robotics, lugnet.publish.photography)
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| | Re: calculating sensor resistance (Ohm's Law)
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Stef Mientki <s.mientki@ids.kun.nl> wrote: : the inside of the RCX (in touch-sensor mode) is ok, and Ohm's law is also. I actually used temperature sensor mode, since I wanted a passive mode that wasn't just boolean. Would that have made a (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) My 6 year-old daughter and I enjoy a nice big bowl of popcorn each Monday night while we watch Junkyard Wars. I have heard that Junkyard Wars will be moving to California. Has anyone else heard that rumor. Also, I notice that they are looking (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: program wont stop running
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(...) Sounds to me the program has indeed stopped. It's just the motor that's still on. --k (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: program wont stop running
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(...) Well, I think this is doing exactly what I'd expect...here is the sequence of events: * You press the RUN button. * The little man starts running. * About a thousandth of a second later, it sets the power level to 7 * About a thousandth of a (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: calculating sensor resistance (Ohm's Law)
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Lauren, Your diagrahm is correct. Your voltage assumption is not. On RCX the full scale is 2 volts to 5 volts, not 0-5 like you have assumed. Try re-calculating with a 3 volt span. - pete. (...) -- Pete Sevcik sevcik@flash.net Techno-stuff Robotics (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: legs anyone?
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HEY! We crossed your gap!, in another day we'll climb your stairs! Infact!, now we will do it on two legs! .... Sir. =) (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: Junkyard Wars (Was Re: robotica on TLC)
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(...) They already showed a handful of episodes with all-American teams - although it wasn't entirely clear where they'd done the filming. It *looked* like they might have flown everyone to UK to save the cost of rebuilding the set. (...) Dunno - (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: New Outdoor Robot Photos
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Graet Pix and Great designs, I'd like to see video of them in action!!!! (...) (24 years ago, 7-Apr-01, to lugnet.robotics, lugnet.publish.photography)
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| | Re: calculating sensor resistance (Ohm's Law)
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Pete Sevcik <lego-robotics@crynwr.com> wrote in message news:3ACE6E90.3FA776....rr.com... (...) full (...) That is not true for passive mode. The scale is 0v = 0 and 5v = 1023 in passive modes like touch or temperature. The problem with what Lauren (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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