 | | Re: Solar Cell Output (Shell logo)
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This is may be a bit Off Topic With all the talk about the lego solar cell, (and cap) I went and got one of each. They are a nice curiosity, but as of right now, I can't seem to find any robot applications. Maybe when the sun comes back to Toronto, (...) (24 years ago, 1-Apr-01, to lugnet.robotics)
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| | Re: Solar Cell Output (Shell logo)
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(...) I believe the cell is made by Shell's photovoltaics division. (URL) Regards Micah J. Mabelitini - LUGNET #918 The University of Kentucky SECC Middlesboro Academic Skills Resource Center accutron@kih.net - (URL) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: Solar Cell Output (Shell logo)
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Here's another link. (URL) Regards Micah J. Mabelitini - LUGNET #918 The University of Kentucky SECC Middlesboro Academic Skills Resource Center accutron@kih.net - (URL) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | RE: Curved Feet
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Scott, I see this set frequently on eBay. There are six there now. Just search for "8880". I got two that way. It's a great set, though I feel that the suspension and joints to transmit driving power to the wheels are rather inflexible. Most of the (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: David Schilling
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Looks like a form of the Killough platform on Leo Dorst's site. The rods appear to provide a 'shell' to keep the blue base from getting stuck in the v area. There are movies of the motion on Doug Carlson's site. I do not have any links handy, but (...) (24 years ago, 1-Apr-01, to lugnet.robotics)
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| | Re: David Schilling
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I built a Killough platform based on Leo Dorst's site and Doug Carlson's site. I have a quicktime movie and links to Leo's and Doug's sites available at: (URL) this helps! (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: David Schilling
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(...) I built the Killough platform for the March SMART meeting mini-challenge. (SMART is the Seattle Mindstorms and Robotic Techies group.) The basic idea was to build a robot to wander around a table, without falling off, and stop beside a heavy (...) (24 years ago, 2-Apr-01, to lugnet.robotics, lugnet.org.us.smart)
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| | Re: David Schilling
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Oh I see. thanx....good luck! (...) (24 years ago, 2-Apr-01, to lugnet.robotics, lugnet.org.us.smart)
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| | Racing Line Follower
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Hello I've built a line follower which is quite fast (approx 4 secs per lap on the testpad). It consists of two motors, each powering a 2/3 geared large wheel. Two light sensors are attached to the front pivot wheel. The distance between the sensors (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: Shutting off illumination LED on Light Sensor for LIDAR
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(...) Yes, this is the result I discovered this weekend. My conclusion is that setting the sensor to raw mode does not fully remove the light produced by the LED, and detrimentally impacts the sensor performance. I think my next approach is to try (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | List software?
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What software runs this mailing list? I ask because I'd like to find out what it would take to get it to put the ML address into messages as the Reply-To address. I run a couple of lists myself (using 7-line SED scripts) and it seems like this (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: Racing Line Follower
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I think I would take your stop watch back to the jeweler. -- Bob Fay rfay@we.mediaone.net (URL) Fasting" <lego-robotics@crynwr.com> wrote in message news:3.0.6.32.200104...line.no... (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: Racing Line Follower
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(...) HeHeHe !!! :-) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: List software?
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(...) No no no no no no no!!!! I ABSOLUTELY hate mailing lists that do that; it makes it near impossible to reply just to the sender. --Ken (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: List software?
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(...) In my experience, one wants to reply to the list more often than just to the sender. Perhaps I'm wrong. In any case, anyone wishing to just reply to the sender would remove the list address from their outgoing message, and fill in the sender's (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Delayed BrickBots contest results
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Hi Folks, Two BrickBots.Com contests ended last week, and here is a rundown of the results. First, the Top Spinning Challenge - Get as many tops spinning simultaneously for as long as possible. (URL) Tip Top Top Tipper Score: 27 points! (URL) (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: Racing Line Follower
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In Creative Projects I make recommendations on line followers. One of them is to add a touch sensor that you can use as a trigger to grab the light levels of the line and the surface and store them in memory. Then you can use the average of those (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: Racing Line Follower
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(...) I've built a few line followers to see how fast I can do the test track - but I've concluded that you have a quality/speed tradeoff. I've built robots that *approximately* follow the track at these kinds of speeds - but without some kind of (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: List software?
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(...) Ditto. I find this *INCREDIBLY* annoying - because this is the only one of over a dozen mailing lists that I'm subscribed to that works this way. What ends up happening is that people *don't* politely edit the 'To:' lines - instead they hit (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Lubricating technic turntables
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Greetings, Any suggestions to safely yet effectively lubricate technic turntables? I have four which are somewhat stiff and require a fair amount of torque to rotate. Thanks in advance! Cheers, Carl Jagt (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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(...) DISCLAIMER: I've never tried this... I'd definitely avoid any kind of liquid lubricant. I'd guess that a dry graphite lubricant would work - the kind of thing that's recommended for lubricating door locks that comes with a nice thin nozzle to (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: List software?
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Steve Baker writes: > Chris 'Xenon' Hanson wrote: > > > I can't enumerate the number of time's (like just a moment ago) > > that I replied directly to the sender, not to the list, forgetting > > to change the To line. > > What ends up happening is (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: List software?
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(...) I don't think that's commonly available - I don't see it under either PINE or Netscape 4.x (the two mailers I use regularly). The observed fact that I get duplicate replies to nearly every message I post to this list suggests that even if that (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: List software?
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Steve Baker writes: > > If you're stuck using software you can't change, ask the author to fix it. > > Well, I maintain that since everyone won't do that, There is no point in discussing this issue further. Spend your energy fixing your software, or (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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I did that on my oldest turntable : took it apart, thoroughly removed all dust and added a SMALL drop of silicone oil. Works fine since... Philo (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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"Steve Baker" <lego-robotics@crynwr.com> wrote in message news:3AC937B7.A66D86...ail.net... (...) turntables? I (...) to (...) Hmm... I have an older turntable (circa 1995ish) and I'd lubricated it about a year after I got it with HO train (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: List software?
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So what software does this? If it is so common to have in an e-mail program, then which do it? Andy (...) (24 years ago, 2-Apr-01, to lugnet.robotics)
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| | Re: List software?
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Andy Gombos writes: > So what software does this? If it is so common to have in an > e-mail program, then which do it? I know of no email software with a "Reply to Recipient" command -- *THAT* is the problem. That's why mailing list operators are (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: List software?
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(...) Try Pegasus (version 3.12c), you have tag-marks to select whom to reply to from all the entries in the header, works perfectly. Andreas (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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I read somewhere in the past as an official "Legostatement" from TLC - that no lubricants of any kind should be used with the gears, wheels, axles, pcs. etc... However, it sounds like some people have had success using controlled amounts. I do know (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | I wish Lego made an "Anti-Backlash Gear"
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Tech question for us: Any body know what an Anti-Backlash gear is? If Lego made one, we would all have super precise Robots and mechanisisms! BERG carries them... Anybody know what I'm talking about? (24 years ago, 3-Apr-01, to lugnet.robotics, lugnet.technic)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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Isnt that the same as the white clutch gear. Here is a link to it: (...) (24 years ago, 3-Apr-01, to lugnet.robotics, lugnet.technic)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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The closest thing to an anti-backlash gear is the Conical gear (a misnomer). It can be used to load a gear train. I have used this in a design by Iain Hendry. (URL) have tried using a second motor in the gear train with a slight reverse current. (...) (24 years ago, 3-Apr-01, to lugnet.robotics, lugnet.technic)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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(...) I have done quite a lot of experimentation to limit backlash in certain situations. First of all, it is quite easy to make little shims from the yellow plastic material the parts are seperated into in new sets. I make ones with 0.2" holes in (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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How about graphite? I don't think that will degrade plastic. (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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Interesting point about the rubber bands vs the resultant torque loss, it is true that the opposing forces on the gears along with the "rubber pull" will tender them to one direction or another in concert... However,...and I say this kindly and (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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yeah, probably work real good,,,,,interesting , But I would'nt use it my self. (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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>>>>>> However,...and I say this kindly and jokingly, ....Cheater!!! You experimented (cheated) with washers of a sort, gaaa.. <<<<<< Hey! real engineering uses shims (not washers ;) And I can honestly put my hand on my heart and say everything in (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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Whoa, I gotta think about this one for awhile..... (...) (24 years ago, 3-Apr-01, to lugnet.robotics, lugnet.technic)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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(...) one would do with this. The Lego Mindstorms booklet doesn't explain it at all. (My host laptop computer runs Linux, and so if it is explained in the nifty multimedia CD-ROM that came with Mindstorms, I've missed it.) It took me weeks to (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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