 | | Re: How about ideas for new elements?
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I applaud 100%! Great work! I like to think that if the Lego designers can have new bits for new models, so can we!!!! I appear to have duplicated just about everthing you've been doing :) As far as the threaded rod business goes; I've been buying (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: List software?
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Doesn't "Reply to Group" only work with New Groups (NNTP), not e-mail lists? And don't ALL e-mail clients have a 'Reply To All' function? Can't you just do that and erase the recipient you don't want (in this case, the sender)? -- V (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Scout Commands
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When you communicate between RCX's you set a number and then use the other end as a sensor to do a certain procedure. Does anybody know what happens when you send those messages to a scout. I know 1 is 'seek dark', 2 is 'seek light and 3 is 'do the (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: NQC for Palm
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(...) i thought of doing something like it, but don't really have the time. (...) i'd use it instead of my computer! (...) i've got very little experience in writing for the PalmOS, but i found it quite easy, specially for this kind of program. i've (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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How about a water-based lubricant instead of petroleum-based? If it's safe for latex...why not ABS? :) Use it sparingly and only as a last resort. Personally, I doubt I would use graphite. Graphite would be a little too messy for me. -Troy (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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"Eric Sophie" <Legomaster@gobi.com> wrote in message news:GB91vJ.21x@lugnet.com... (...) over (...) Ncm. (...) Newtons x cm. Not nano. :) Iain (the metric pissant) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: List software?
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"Russell Nelson" <lego-robotics@crynwr.com> wrote in message news:15049.48238.578...nwr.com... (...) Try Outlook Express (is avaible for Win 9x, Win NT, Solaris, Linux, Unix) This program has a Reply Group button and Reply (to sender) works great. (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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Yes they do lose a little, I guess we always knew that would be the case, I hate to see you not use the gear if it's to loose, reurn it for a new one if you decide somthing really needs it. Also I consider this gear a "back-up" in preventing (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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Oh , right , Newtons , I was saying Nano centameters! thanks....I guess you need a fair amount of gearing and distance to use these gears effectivly along with opposing resistance, I love the way it works in the hand I developed, infact in included (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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(...) Hmm interesting. I only have one clutch gear (the one that came with RIS 1.5), and it is too *loose* to really be at all functional. I've also read that the clutch force tends to drop in them the more they are used. (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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(...) (I think we established that this is Newton centimeters - a force of between two and a half and five Newtons applied at a distance of one centimeter will cause the gear to slip...or half that at 2cm, a third at 3cm and so on). (...) That's (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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Good point, well taken, I'm glad at least 5L axle was produced! (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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(...) That's okay, I'm a purist too. I once spent several frustrating hours completely redesigning the drivetrain on one of my robots so I wouldn't have to trim down four 8L cross axles to 7L. However, when you consider lubricating a turntable (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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You got me pegged, it's a purism thing, I pride myself on never cutting or altering pieces, glueing or lubricating. Just work those pieces and they'll loosen up! Get'em... GRRRRR....Eric (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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(...) Far as I can tell, these are the gears used in the gearboxes in 8880, 8448, 8480, and prob'ly others. ROSCO (24 years ago, 4-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 CD-Rom does not explaiin how to use this piece, but in an earlier post I wrote: Ok, this is called a "Slip Gear" or "Torque Gear" It is used to prevent over rotation by means of an internal clutch, the 2.5 - 5.0 NCM I belive means the range of (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: NQC for Palm
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(...) Of course on my Agenda Palmtop - it took little more than typing 'make' to port it. <smug grin> (...) So the Palm is big-endian? I didn't know that. Won't that also cause problems for NQC porting...does NQC run on any other big-endian (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: NQC for Palm
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(...) I just did some measurements of heap usage for NQC, and it isn't quite as bad as I feared. Compiling a trivial program without including the standard API uses about 11K. If you include the standard API, this grows to about 64K. For a modest (...) (24 years ago, 4-Apr-01, to lugnet.robotics)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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(...) What set(s) include this "conical" gear? (24 years ago, 4-Apr-01, to lugnet.robotics, lugnet.technic)
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| | Re: I wish Lego made an "Anti-Backlash Gear"
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It's not so much the "conical" gear that takes the backlash out of the setup that Bob Fay provided links to, but the ability to use the technic axles as torsion springs and keep the gear teeth in the train loaded at all times. That particular gear (...) (24 years ago, 4-Apr-01, to lugnet.robotics, lugnet.technic)
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| | Re: NQC for Palm
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Well, I just got some bad news from Dave 'NQC' Baum. Apparently he's a Palm developer, and he won't touch the project, because of architectural limitations in the Palm OS. Apparently NQC needs a lot more dynamically- allocated memory than the (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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(...) Why would one "never know"? This is chemistry, not astrology. Graphene sheets (the molecular unit of graphite) are quite stable and inert. Most hydrocarbon oils should also be fine for turntables and other parts with all-ABS construction (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: List software?
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I think that people think it is a pain in the a$$, as there has been a post on this before, but it has been this way for a long time, and people are used to having to delete senders. I am not saying that I like to do this (I don't), but that people (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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Oil may work well on turntables, but don't use them for pneumatics. I oiled them with some kind of oil (I can't remember), and now they stick and stutter when you pull them. They seem to operate fine now, but not if they get much worse. I would not (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: Lubricating technic turntables
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(...) Why not? Graphite's carbon rings are most definitely not going to harm ABS plastic. Is it a purism thing? (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | RE: Lubricating technic turntables
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Graphite could work, and should be safe. I've been using it for model train couplers, which are made from Delrin. It comes in a little tube, and you sort of "puff" it on. Kadee is the manufacturer, and it should be available in the model train (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Palm Robotic Mover
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In what is the most pro-active customer support I have ever experienced, Paul Ellams contacted me and suggested I might beta a newer revision of his Robotics Mover software for the Palm platform. He was suprised that my range using a Handspring was (...) (24 years ago, 3-Apr-01, to lugnet.robotics, lugnet.robotics.palm)
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| | Re: NQC for Palm
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(...) I hadn't. Don't have the necessary serial connectors to do so, and it seems like it would be bulky and awkward even if successful. I'd be very happy to eliminate the IR tower from my laptop too, if there were any way to make Lego IR and IrDA (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: NQC for Palm
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(...) Greetings, Chris! Have you seen Mike Kory's BrickRemote? ((URL) His app relies on a physical connection with the Lego IR Tower (serial port) and (I'm probably speaking way out of turn here) also appears to be able to by-pass any need to (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | NQC for Palm
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I'm considering the ambitious undertaking of trying to port NQC to my Palm IIIx. I've gotten the RCXlib running, though the demo program seems to not be able to find my RCX 'alive'. I know GCC can be used to generate Palm apps, and NQC doesn't seem (...) (24 years ago, 3-Apr-01, to lugnet.robotics)
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| | Re: List software?
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(...) I didn't mean to start such a firestorm about this. I suspect, reality being lazy, that it's easier to fix a 'problem' like this in one place (the centralized mailing-list software) and not in a great multitude of places (everyone's varied (...) (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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Ha Ha that's great...ok buddy, thanks... Eric, - I still have got to ponder these pix for awhile! (...) (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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(...) 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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| | 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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>>>>>> 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: 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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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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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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(...) 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: 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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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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| | 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: 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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| | 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: 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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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: 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: 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: 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: 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: > 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: 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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| | 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: 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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| | 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: 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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| | 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: 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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| | 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: Racing Line Follower
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(...) HeHeHe !!! :-) (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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| |
| | 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: 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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| | 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: 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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| | 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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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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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: 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: 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: 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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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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| | David Schilling
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This has an unusual drive-train, I'd like to see what i does and how it moves. (URL) (24 years ago, 1-Apr-01, to lugnet.robotics)
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| | Re: Ideas for new sets?
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(...) Pokemon Jürgen (24 years ago, 1-Apr-01, to lugnet.robotics)
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| | Re: Shutting off illumination LED on Light Sensor for LIDAR
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(...) Actually you don't need LegOS, any input set to raw mode with the LEGO firmware will do fine. This is because even in passive mode there is a pull up of 10k to 5V, and in fact the LED is glowing dimly in this mode. Just tried it, I can get raw (...) (24 years ago, 1-Apr-01, to lugnet.robotics)
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| | Re: Question about RIS 1.0
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(...) The RIS 1.0 can be run from either 12VAC or 12VDC. In either case an internal bridge rectifier supplies the internal circuitry with the proper polarity. Internal power is supplied through an LM2936M 5V regulator (maximum input of 45V BTW) The (...) (24 years ago, 1-Apr-01, to lugnet.robotics)
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| | Re: Question about RIS 1.0
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(...) Transformers do NOT convert AC to DC. They only convert AC to AC. The DC conversion is performed by four diodes in the RIS1.0. Maximum input is rated at 12V AC or DC (the diodes will take care of the polarity for DC inputs) although the (...) (24 years ago, 1-Apr-01, to lugnet.robotics)
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| | Re: Solar Capacitor
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(...) Yeah it's for real. There's been alot of discussion about the capacitor on here recently, just do a news search. (24 years ago, 1-Apr-01, to lugnet.robotics)
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| | Solar Capacitor
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I have been playing with a couple of Lego solar panels and the Capacitors. (URL) label on the capacitor claims a value of 1 farad. Is this value possible in such a small component? I always thought a 1 farad capacitor would need a huge plate area. I (...) (24 years ago, 31-Mar-01, to lugnet.robotics)
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| | Re: Ideas for new sets?
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(...) ...and they are marketing to children raised on Nintendo. We are responsible to teach children how valuable a "highly flexible mechnical building toy" is. ---...--- $50,000 for Jill Behrman (URL) (24 years ago, 31-Mar-01, to lugnet.robotics)
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| | Re: Lego Remote Control - Here's The Scoop
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what about newmatic switches? all lot of sets have them to (...) (24 years ago, 31-Mar-01, to lugnet.technic, lugnet.robotics)
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| | Re: Shutting off illumination LED on Light Sensor for LIDAR
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(...) I strongly suspect this is a myth. A transistor is a transistor is a transistor. They all require biasing in order to function properly and that requires power. Mind you, even so-called passive devices must either generate a voltage or have a (...) (24 years ago, 31-Mar-01, to lugnet.robotics)
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| | Re: lego cap, polarity, etc
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(...) This is generally true, but not as dire as you make it sound. (...) Actually, electrolyte is a good conductor of electricity (in any direction). It comprises one of the terminals in an electrolytic capacitor. The other terminal is aluminum, (...) (24 years ago, 31-Mar-01, to lugnet.robotics)
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| | Re: Ideas for new sets?
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(...) What exists in the real world and what exists in the minds of some marketing personnel is often radically different. The play and educational value of Technic IS still present, but isn't valued as much by the marketing people at Lego. I (...) (24 years ago, 31-Mar-01, to lugnet.robotics)
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| | Re: Question about RIS 1.0
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(...) The RCX accepts AC voltage, all it needs to convert to DC is 4 diodes, or a small bridge rectifier. It takes anything from 9-12VAC. Apparently you can do some damage by plugging in DC, as in the long term you will only be passing voltage (...) (24 years ago, 31-Mar-01, to lugnet.robotics)
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| | Re: Question about RIS 1.0
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(...) Is that right? Wouldn't the AC adapter be a AC to DC Converter? I have seen the RCX circuit board and I do not remember there being enough room for a transformer built-in to convert the AC signal to DC. Steven B. Combs, MS, CIT Associate (...) (24 years ago, 31-Mar-01, to lugnet.robotics)
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| | Re: Question about RIS 1.0
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(...) The RCX uses AC input, not DC. The AC/DC conversion is internal, so what you need is a power adapter that outputs AC. I've heard that you can toast your RCX with an AC/DC adapter as well, so be careful. (24 years ago, 31-Mar-01, to lugnet.robotics)
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| | (canceled)
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| | Question about RIS 1.0
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Dear Gang, I recently got the Robotics Invention System 1.0 and I would like to know which would be the positive for the AC adapter, the inside or outside. I have an adapter, but I am not sure how to set the Positive/Negative switch. Thanks, Bryan (...) (24 years ago, 31-Mar-01, to lugnet.robotics)
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| | Re: 2001 Model
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(...) This is very true! I had all sorts of fun "improving" the four legged walking mechanism on the Darkside Developer thing. The way the instructions defined it, it was much too wobbly! With a little care redoing the key leg joints, it work a lot (...) (24 years ago, 30-Mar-01, to lugnet.robotics)
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| | LEGO capacitor cares about polarity
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I found some information about the LEGO capacitor that might help close this discussion at (URL) Characteristics - 1 Farad @ 2.5 Volts Capacity or about 3.125 joules - Operating voltage 2.5 Volts normal, 4 Volts Charging Max. - 250 mA Maximum (...) (24 years ago, 30-Mar-01, to lugnet.robotics)
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| | RE: Ideas for new sets?
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(...) While it's true that Dacta products aren't exactly readily available to the average consumer at the local mall, you can easily mail-order them. The catalog is on-line at (URL) are a few mail-order places in the US that carry the Dacta. I have (...) (24 years ago, 30-Mar-01, to lugnet.robotics)
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| | Re: Ideas for new sets?
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(...) Don't forget the selling of Lego Technic to George Lucas! I agree the Dacta Catalog is repleat with wonderful kits that are unavailable to the consumer. The solar kit is one of the most fascinating and would be a wonderful way for children and (...) (24 years ago, 30-Mar-01, to lugnet.robotics)
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| | Re: Shutting off illumination LED on Light Sensor for LIDAR
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(...) Thanks. I had seen this technique (and noticed this effect myself) but had heard rumor that this impaired the sensitivity of the detector. I'm going to try some rigorous tests and see if I can verify this. (...) We almost needa Yahoo-style (...) (24 years ago, 30-Mar-01, to lugnet.robotics)
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| | Re: Ideas for new sets?
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(...) Basically what you're asking is, "Why has LEGO completely lost their mind?". I think the "Technic concept" is still valid. I think it's just being re-marketed under the Mindstorms product line. Who knows what LEGO was thinking when they came (...) (24 years ago, 29-Mar-01, to lugnet.robotics)
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| | Re: Shutting off illumination LED on Light Sensor for LIDAR
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(...) That's not a legOS feature. You just set the input port to passive mode, and read it in RAW mode. There is an example in NQC at (URL) (I forgot to add the address in my previous post :-). (...) You can find light sensor schematics on Michael (...) (24 years ago, 29-Mar-01, to lugnet.robotics)
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| | Ideas for new sets?
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I have a very basic question, on the subject of new sets and themes and so on; If technic "was" a viable medium for kids with latent engineering skills to learn with, why are those kinds of sets not still available? If Lego were selling to the same (...) (24 years ago, 29-Mar-01, to lugnet.robotics)
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| | Re: Shutting off illumination LED on Light Sensor for LIDAR
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(...) Thanks for all the tips, everybody. I set out last night to open up my light sensor and add a jumper to allow me to take the LED out of the circuit. I was unsuccessful in getting the casing open, even after cutting the underside latching tabs (...) (24 years ago, 29-Mar-01, to lugnet.robotics)
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| | Re: lego cap, polarity, etc
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(...) <snip> The polarity markings Andy Gombos was referring to are printed on the LEGO-compatible package itself. The LEGO "capacitor" is in fact an electrolytic cap with plenty of support circuitry, and I assure you there is no danger of blowing (...) (24 years ago, 29-Mar-01, to lugnet.robotics)
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| | Re: Shutting off illumination LED on Light Sensor for LIDAR
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I drilled a hole in a 1x2 brick to give the light sensor a better sense of direction and to block the LED. The goal was to have the light sensor seek an IR beacon. (...) (24 years ago, 29-Mar-01, to lugnet.robotics)
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