 | | RE: ABB irb340 PickMaster
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(...) The pbForth language has servo driving words built-in to the current release. They allow at least 128 steps of resolution for driving servos. Combined with the dead-simple circuit on my web-page, it makes driving servos very easy... (URL) (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: Fw: Saw RCX brick at Goodwill
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(...) Or go directly to (URL) Jürgen Stuber <stuber@loria.fr> (URL) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: ABB irb340 PickMaster
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"Steve Baker" <lego-robotics@crynwr.com> wrote in message news:3A78DBA9.F3C3D2...ail.net... (...) way (...) using (...) narrower (...) They (...) position (...) new (...) a (...) pulse (...) that. (...) something (...) hardware (...) Well, (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: RCX's and Lego Trains
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"J Austin David" <lego-robotics@crynwr.com> wrote in message news:200102010255.VA...gtf.org... (...) ...which is why I'm such a huge proponent of rubber-tyre based transit systems :) (Hear that, m.t.u-t? *sigh*...) Iain (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: Fw: Saw RCX brick at Goodwill
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(...) a (...) Oops, of course you're right ! The new (2.0) firmware is included in the Lego "RCX 2.0 Beta SDK" You can find it at (URL) the right bottom corner is a link to "Hacker Info - RCX 2.0 BETA SDK" On the bottom of the appearing page you're (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: LEGO says adults 25-45 account for half of MindStorms sales!
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Maybe this is a quibble, but aren't the parents of most "kids" likely to be using Mindstorms in the 35+ age group??? I don't see too many kids coming up with the purchase price out of pocket, but I get a lot of parents asking me what to buy for (...) (25 years ago, 1-Feb-01, to lugnet.general, lugnet.robotics)
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| | Re: Fw: Saw RCX brick at Goodwill
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(...) You forgot to mention that he'll have to head over to www.lego.com to download a copy of the RCX firmware - RCX 2.0 firmware is recommended (and yes, it works just fine on RCX 1.0 and 1.5 hardware) If you can't find it on the Lego site - let (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: ABB irb340 PickMaster
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(...) The problem is that servo's are driven by signals that are considerably narrower than the 1/100th second resolution timers that the Lego firmware provides. They use pulse-width modulation - so the width of the pulse determines the position of (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: RCX's and Lego Trains
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(...) You can do either one, but it has a few drawbacks -- (a) not much variability in power -- all or nothin' (b) not much selectability -- all trains on the rails get power. I've had success making a powered truck w/ regular train wheels (2 sets, (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | RCX's and Lego Trains
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Can you "drive" a Lego train with an RCX? The Lego 5300 has a power connector on top, or perhaps just power the rails? (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | New WebBrick 1.5
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I have improved WebBrick's error checking. Some people have complained that it crashes sometimes, and hopefully the new error checking will find any problems. WebBrick is a simple tool for connecting your RCX to the web. You don't need to do any (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) Nonsense. I quote: "No general-purpose computer is complete without a memory. The memory of the Apraphulian computer consisted of hundreds of special storage elements we would call flip-flops. Here again the remarkable simplicity of the (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) Now you've gone and ruined it...<sigh>....I guess there has to be one in every class; but for the rest of you, please suspend disbelief and know that the machine described is still a very, very valid description of a digital computer, albeit (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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I took a look at the Dewdney article, and I agree, it is a quasi-digital device, but not a general-purpose computer at all. I have been working on a "universal Turing machine" made from Lego technics parts, but I am cheating and using an RCX for the (...) (25 years ago, 1-Feb-01, to lugnet.robotics)
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| | Re: Fw: Saw RCX brick at Goodwill
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(...) Hi chrisb, I would recommend Dave Baums NQC (Not Quite C) for you as a rookie ;-) You can find it here : (URL) if you're living in a windows world you can use the RCXCC (RXC Command Center ; don't know who's responsible for this :( ) located (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) Hrm. Apraphulians sounds a lot like April-Fool-ians.... Are you sure this is real? Ah-ha. See: (URL) idea though. -Kekoa (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Fw: Saw RCX brick at Goodwill
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ok, you convinced me. i went at lunch and bought it. looks like everything is there but the CD. it's a Robotics Invention System 1.5 now i wished i'd paid attention to your discussions about what software to program it with. (...) while (...) it (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: ABB irb340 PickMaster
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"Ralph Hempel" <rhempel@bmts.com> wrote in message news:NEBBIJADEJHLFJD...mts.com... (...) Ralph, I'd love to try using servos sometime; but until I can find a practical way to get more than two positions, I think I'm going to have to stick to using (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Saw RCX brick at Goodwill
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(...) Worse than that - Lego represents a choking hazard to 3yr olds - you can't possibly use it! Duplo for you for another year or two! ...I'll give you $35. :-) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | [Fwd: [agenda-dev] IrDA port]
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I saw this post on the Agenda PDA mailing list. (The Agenda is a palmtop Linux computer that has *both* CIR and IRDA ports - and thus might be *IDEAL* for controlling Lego RCX/Scout machines without the Lego IR tower or any other external hardware). (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | TLG support
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(...) I've seen this kind of messages many times and I have to ask something: Is this LEGO worldwide common practice, or it just happens in North America ? ok, I know, I can always ask them by email, but they take a long time to reply. Thxs for any (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Saw RCX brick at Goodwill
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(...) It doesn't matter if the brick is dead; You can call up lego and say "Hey, my brick is dead!" and they'll send you another; They may or may not ask for the old one back. (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Saw RCX brick at Goodwill
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Well, to save you worrying, why not just go buy it for $30 and I'll send you the $30 + cost of postage and you can forward it to me. I'm sure I could get $30 value out of it. I don't think the average 3 year old would have a lot of use for it (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Saw RCX brick at Goodwill
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I need more information to help you. Where exactly is this Goodwill located, and what are their business hours? Regards, Amnon (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Saw RCX brick at Goodwill
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Hey all, i'm a casual follower of the list and only hit the leggos once in a while with my three yr old. But this weekend was in Goodwill and saw a box, blue lightening bolts, etc...(can't remember what product name was on it....argh..maybe (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | RE: ABB irb340 PickMaster
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(...) Iain, This looks like a perfect opportunity to try using the servo circuit I designed! If I use some of the heavier duty servos I have in my stash, it could probably go direct drive. Each servo has a 180 degree range of motion, which might be (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | New Site
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Hi all, I have revamped my website. New look and feel. In the following weeks I will be posting pics and info for each stage of my Cyber Clinger - 2 RCX's, 1 Scout and a lot of sensors... The robot will be modeled after the Lego version "Robo goes (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: CM-RCX comm (Anyone using Scout->MicroScout/CodePilot ?)
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(...) Yes, I understand. Lego created VLL for barcode reading (CodePilot, and then MicroScout). Barcode reading is error prone, so are other forms of serial communication. Through the use of the VLL Checksum bits and timeouts, one can invalidate bad (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) Good enough for me-- after all, any combinational logic construct (gates, but no registers/flip flops) can be represented as a ROM, and this is often done in practice. I can't imagine saying that just because one didn't represent it the other (...) (25 years ago, 31-Jan-01, to lugnet.robotics, lugnet.general)
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| | Re: CM-RCX comm
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(...) Well, yes - but then crystal oscillators are quite accurate (but crucially, not 100% accurate). You might have to run as long as one or two MILLION attempts before you see an error - but you *will* see an error if you do it for long enough. If (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | ABB irb340 PickMaster
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(URL) pictures) This is modeled after the ABB irb340 PickMaster ( (URL) - Click on "Robots", then IRB 340). I know, it's just the base right now. But it proves the concept. I think I ought to buy another rotation sensor. This thing is *wild*. If you (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: CM-RCX comm
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(...) oops, it's the other way around: Wait(20)/Wait(10) combinations for ZERO and Wait(10)/Wait(20) for ONE. mc. (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: CM-RCX comm
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(...) make (...) Would make (...) used (...) Yes of course I will :) Because I'm still in the early stages of this, I decided to use all my small spare time to this project, and only in the end, after having my mcVLLlib.ncq the way I want it, I'll (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: CM-RCX comm
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(...) That's exactly what my common sense made me believe. But various tests I did, using a dump of a Datalog with the timmings measured by the RCX, proved me wrong. Every Wait(10) was correctly measured as a Timer(3)==1, and every Wait(50) as a (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: LEGO says adults 25-45 account for half of MindStormssales!
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(...) I wrote Gordon's Brick Programmer for Mindstorms after I was 50... ...and then I had to go out and buy lots more lego. Just for testing purposes you understand:-) Malcolm Powell (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: CM-RCX comm
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(...) Wooaahhh! That can't be true. Both machines are running some kind of (hopefully) crystal oscillator to generate the clock that drives the Timer() and Wait() commands. No two cystal oscillators generate the *exact* same timing - so your two (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: LEGO says adults 25-45 account for half of MindStormssales!
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(...) Since (obviously) there are lots of AFOL's who are >45, that just means that AFOL's represent *FAR* more than half of the owners. (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) I'm pretty sure the Tinkertoy 'computer' was basically a look-up table that had all positions coded into it with the correct responses, making use of symmetries to cut down the size of lookup needed. I don't really consider that to be a (...) (25 years ago, 31-Jan-01, to lugnet.robotics, lugnet.general)
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| | Re: Building a computer from Lego's
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(...) You are absolutely correct. The reason I was quoting "computer" was because it has such a broad definition. Some folks get downright violent if you call an abacus a computer, but it is. What you really need to do is classify the computer. the (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) tic-tac-toe "computer" from relays, they had one at the old Buhl Planetarium in Pittsburgh. The game of tic-tac-toe is easily simulated with a finite state machine (FSM) as there are fixed strategies, clear outcomes and lots of symmetry. The (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) Now, if you really want to build something out of Lego, build a Von Neumann architecture computer. The RCX is a "Von Neumann Machine". Harley Myler (URL) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) What if you used the RCX to power each subsystem, but not the entire computer? For example, one RCX for the keyboard, another on the tape drive, and another on the output. They communicate via the IR ports (or by raising and lowering flags (...) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) Does building an abacus out of LEGO count as a computer? :-) Mark. ---- Mark Crosbie mark@mastincrosbie.com Linux, Electronics and LEGO all at (URL) (25 years ago, 31-Jan-01, to lugnet.robotics)
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| | Re: Searching for alternatives
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(...) Your best bet would be a Handspring Visor with a Springboard that has inputs and outputs on it... I figure one of them will be along soon. (Waiting for NQC on palm os...) Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) Browse (URL) for a description of a "rope and pulley" computer, it might give some insight into building one with Lego. Harley Myler (URL) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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i couldn't find the actual images, anyone got a specific link? i mean the group thing sounds great but i would really like to see the actual mechanism. mike "dying to reverse engineer" fusion (25 years ago, 30-Jan-01, to lugnet.robotics, lugnet.general)
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| | Re: Building a computer from Lego's
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Hmmm, thats getting pretty close but I guess I'm thinking of for if-then-else logic at least. Or a simple adder. Must be literature on making machines out of simple stuff (non-IC) for adding. Looks like a nice kit though. ... don't make'm like they (...) (25 years ago, 30-Jan-01, to lugnet.robotics, lugnet.general)
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| | Re: LEGO says adults 25-45 account for half of MindStorms sales!
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I am the TA for a robotics class at the graduate school level and we are using the RCX for the first half, if not all, of the semester. Everyone is having a blast! Jim (...) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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I remember a sort of programmable crane from the first technic ideas book. You'd program it with gear racks on a plate. See (URL) that count? Duq (25 years ago, 30-Jan-01, to lugnet.robotics, lugnet.general)
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| | Re: Does anyone remember ... ?
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(...) I think it's Kekoa Proudfoots website you're talking about. (URL) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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Well I guess we are using the term "computer" a little loosely. But if it could play tic-tac-toe then it made decisions based variable input, thats kind of like a computer. And using an RCX would definitely NOT count. Bob (...) (25 years ago, 30-Jan-01, to lugnet.robotics, lugnet.general)
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| | Re: Searching for alternatives
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check the (URL) ----- Original Message ----- From: Patricio Valarezo To: lego-robotics@crynwr.com Sent: Monday, September 06, 1999 1:02 PM Subject: Searching for alternatives Hi, my question is as follow: The RCX´s main components are the CPU and (...) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: LEGO says adults 25-45 account for half of MindStorms sales!
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Harrie wrote: >I'm 46. Did they count me? It's my 50th this weekend! I resent them limiting it to 45! I know no one asked my opinion. And I have a sneaking suspicion I have somewhat more "product" than the average <25. ;) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: CM-RCX comm
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Status Report: 1) Ok, just got my RIS 1.0 set (AT LAST! ;) 2) My first tests with the two pBricks (CyberMaster and RCX) prove that it's possible to communicate using a (ten times) slower version of VLL protocol (I call it SlowVLL for short). *It (...) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Does anyone remember ... ?
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I am trying to find the web page that describes the serial protocol for the IR tower - RCX communications. Preamble code, message codes checksum etc etc. 2400, n, 8 1 etc. Does anyone happen to recall where it is? Thanks JB (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: Building a computer from Lego's
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(...) It was Mario and Marco Beri, they had it with them at Mindfest. I don't know if Mario's brother Gulio had any input into it, so if I'm leaving him out accidentally don't hit me. eric (25 years ago, 30-Jan-01, to lugnet.robotics, lugnet.general)
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| | Re: Building a computer from Lego's
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(...) play tic-tac-toe, made out of tinkertoys... but generally, I think of computers as... I dunno... kinda having a 'processing' stage to them... Or maybe it's that the programs are interchangeable... dunno... Maybe it was a computer... hmm... But (...) (25 years ago, 30-Jan-01, to lugnet.robotics, lugnet.general)
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| | Building a computer from Lego's
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This guy built a computer out of Tinkertoys! So I was wondering, has anyone ever built a computer out of legos? Heck, has anyone ever built a working cash register. Certainly can be done. (URL) (25 years ago, 30-Jan-01, to lugnet.robotics, lugnet.general)
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| | Re: Searching for alternatives
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(...) Not that I know of - but I think it would be hard to make something as convenient as the RCX from the point of view of nice packaging, connectors that fit the weird Lego electrical connectors (those are pretty clever - take the time to figure (...) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: LEGO says adults 25-45 account for half of MindStorms sales!
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I don't doubt that in the least! I took my RCX brick into VB class the other day and showed it and the manual for programming through spirit.ocx to my teacher. Now he knows what he's asking for on his birthday he said :) Along with 3 other people in (...) (25 years ago, 30-Jan-01, to lugnet.general, lugnet.robotics)
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| | Re: can i use macromedia flash or director with lego ?
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I have been able to do some basic experiments in controlling the RCX from Director 7. I used a trial version of the DirectComm Xtra from DirectXtras which allows Director to access the serial port. Try there web page at (URL) trial version runs only (...) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: LEGO says adults 25-45 account for half of MindStorms sales!
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Maybe they will listen to AFOL's more now. Andy (...) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: LEGO says adults 25-45 account for half of MindStorms sales!
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I'm 46. Did they count me? Harrie ----- Original Message ----- From: "Todd Lehman" <lehman@javanet.com> To: <lego-robotics@crynwr.com> Sent: Monday, January 29, 2001 18:36 Subject: LEGO says adults 25-45 account for half of MindStorms sales! (...) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Re: LEGO says adults 25-45 account for half of MindStorms sales!
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(...) Indeed. I have purchased, directly, for me and me alone, well in excess of 600 Lego products, only 1 of which is a Mindstorms kit. I can say with a fair degree of certainty that I'm not the biggest spender out there, or even in the top 10. I (...) (25 years ago, 30-Jan-01, to lugnet.general, lugnet.robotics)
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| | Re: LEGO says adults 25-45 account for half of MindStorms sales!
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Todd Lehman wrote in message ... (...) Yeah. I just hope it doesn't blind Lego to the fact that even *more* AFOL's are into Lego themes OTHER than Mindstorms, or as well as Mindstorms. Kevin ---...--- Victorian House: Limited edition kit (URL) Kits (...) (25 years ago, 30-Jan-01, to lugnet.general, lugnet.robotics)
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| | Re: MOC: Brick mixer
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You're right... But there are quite a few practical issues to address, specially the exact position of bricks on the "Turing strip" to be able to pick them... That strip should also be much longer for any "practical" use (and I'm running short of (...) (25 years ago, 30-Jan-01, to lugnet.robotics)
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| | Status of RIS 2.0??
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What is the status of version 2.0? It has gotten impossible to find older sets. Fry's has a couple that have been opened and are missing software (and possibly parts), but they will only drop the price to $179. What a rip-off! (25 years ago, 30-Jan-01, to lugnet.market.shopping, lugnet.robotics)
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| | LEGO says adults 25-45 account for half of MindStorms sales!
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(...) Whoa--whoa--wow!--half?!?!? Way excellent!!! --Todd (25 years ago, 30-Jan-01, to lugnet.general, lugnet.robotics)
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| | Re: MOC: Brick mixer
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This is so close to being a Turing machine. If it could pick and place from its own card stack, you'd have a really cool general-purpose computer system! (...) (25 years ago, 29-Jan-01, to lugnet.robotics)
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| | Re: Sensors
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Robert, You've just described the Scout (in the Robotics Discovery Set) perfectly! Sensors 1 & 3 can only handle touch sensors (or light sensors if you don't need the reading to be totally accurate), and Sensor 2 is a fixed light sensor. Your RCX (...) (25 years ago, 29-Jan-01, to lugnet.robotics)
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| | Re: Where is this part?
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I also had this prob. |I think I heard that the RCX1.0 came with RIS 1.5 though not sure. |This part is in some of the convertible models eg 8252 police buggy |Or a substitute can be made as shown on the following web page = | (URL) |For the (...) (25 years ago, 29-Jan-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | can i use macromedia flash or director with lego ?
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hi group can i use macromedia flash or director with lego ? DR Patel (25 years ago, 29-Jan-01, to lugnet.robotics)
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| | Searching for alternatives
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Hi, my question is as follow: The RCX´s main components are the CPU and the i/o interfaces. Do you know of someone working to make a common computer ( using linux) with some hardware for i/o than works like the RCX? I would like to learn more about (...) (25 years ago, 6-Sep-99, to lugnet.robotics)
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| | Re: LEGO Solar Cell (Was 'Re: New Pitsco Catalog')
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Ram, I shut down marsrobot. The new URL for that robot is: (...) (25 years ago, 29-Jan-01, to lugnet.robotics)
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| | Re: LEGO Solar Cell (Was 'Re: New Pitsco Catalog')
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Actually, it is capable of driving only the geared 9V motor, but it runs really slowly (that is, not in full power). Check out the following site that uses the RCX and the solar cell on a mobile robot with videos : (URL) Original Message ----- From: (...) (25 years ago, 29-Jan-01, to lugnet.robotics)
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| | Re: Sensors
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Mail-Thuis <lego-robotics@crynwr.com> wrote in message news:4.3.2.7.2.20010...kom.net... (...) No it is not correct. All three ports are equal. (...) use (...) Yes. Visit (URL) for a lot of information on RCX sensors. (25 years ago, 29-Jan-01, to lugnet.robotics)
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| | Sensors
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Hi, I have a RCX 1.5 and would like to have some information. 1) Is it correct that only port 2 can be use for the light sensor ? 2) And only ports 1 and 3 for the touch-sensors ? Can I use microswitches and some resistors to make an array which i (...) (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | Re: Two more for the wish list
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A few months ago I built a model of two synchronized metering pumps, one for nitro-goo and one for glycerine-goo. The idea was to have both pumps synchronized. I did it with a differential and a rotation sensor to mark the difference and a (...) (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | Re: Two more for the wish list
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(...) Yes - but if you've been following the discussions about dropped counts, you'll know that the standard rotation sensor is pretty inaccurate when you set it up like that. It likes nice *fast* rotation rates. (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | Re: Two more for the wish list
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Matthias, this is easy to do without a new part. You use a normal differential, put one shaft in one side, the other shaft (but reversed) in the other and connect the rotation sensor to the output. You get a positive count if the right wheel is (...) (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | LEGO Solar Cell (Was 'Re: New Pitsco Catalog')
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The solar cell is included in the LEGO Dacta eLAB Renewable Energy Set (#979681; Pitsco 2001 page 50), and is clearly pictured being used to power a standard 9V LEGO motor with internal gear reduction, in a simple tri-wheel mobile platform. The (...) (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | Re: UK List
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The joint lego robotics (lego-robotics@crynwr.com) and lugnet.robotics@lugnet.com and the related lugnet ones eg technic etc ----- Original Message ----- From: Ciaran To: Peternewmancl@hotmail.com Sent: Monday, January 29, 2001 12:44 AM >>Hello All (...) (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | A British list
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Hello All I notice many comments on this list refer to US things, is there a UK list Peter Peternewmancl@hotmail.com (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | Re: New Pitsco Catalog
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(...) While I can't see it being used for Lego, given the current required to run the motors, I have built solar powered vehicles which use a solar cell and a high-value/low voltage capacitor. These are frequently sold under the (improper) (...) (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | Two more for the wish list
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I've noticed that there is considerable discussion in various groups regarding the problem of getting a robot to move in a straight line. Here's something for the LEGO wish list I haven't seen mentioned before: A DIFFERENTIAL rotation sensor Mount (...) (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | Re: New Pitsco Catalog
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(...) I tried to use Solar panels for power the RCX. No go. It needs a lot of amps to power it and solar is not big on amps... As a light sensor it's incredible fast. Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 28-Jan-01, to lugnet.robotics)
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| | It works! [was: Cybermaster: Cannot receive though sending works (w/o sprit.ocx)]
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"Theo van Eijndhoven" <theo@sympro.nl> schrieb im Newsbeitrag news:G7o2AM.AFL@lugnet.com... (...) Yippie! That did it! I set RTS to false and now it works! Thank you! -Oli -- "If it ain't broken don't fix it!!" (25 years ago, 27-Jan-01, to lugnet.robotics, lugnet.robotics.cybermaster, lugnet.robotics.rcx)
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| | Re: New Pitsco Catalog
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There's lots of stuff in the Pitsco product line for energy-related training for schools. Check out: (URL) I wonder too if anyone uses it for robotics power sources. I also wonder if it's any good as a light sensor. Jerry (...) (25 years ago, 27-Jan-01, to lugnet.robotics)
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| | New Pitsco Catalog
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I got the new Pitsco 2001 catalog in the mail today, and noticed that there's a LEGO solar panel available. Is this a new product? I was under the impression that LEGO didn't make a solar panel. Anybody know what its mA output (in direct sunlight) (...) (25 years ago, 27-Jan-01, to lugnet.robotics)
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| | Re: Laptop IR port
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(...) Yes, that's why they give you one... It's not compatible with PC IR ports. Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 27-Jan-01, to lugnet.robotics)
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| | Laptop IR port
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Sony laptop IR port with W98, I can't program the RCX. Do you have to use the Lego IR tower? ___...___ Get your FREE download of MSN Explorer at (URL) (25 years ago, 27-Jan-01, to lugnet.robotics)
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| | SCARA, Anyone?
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Just curious... Is anyone else trying to do a SCARA? This is really an interesting robot-concept, and I'd love to see others ideas. Programming has been my main headache; I've not successfully implemented any sort of vector/servo typ drive tasks in (...) (25 years ago, 26-Jan-01, to lugnet.robotics)
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| | Re: Interfacing Sharp's GP2D02 Distance Sensor to the RCX
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(...) Hallo Ram, you are right that my solution for the Distance Tracker Bot, the interface for the GP2D02 is a real "resource killer". At the beginning i planned to istall two of the GP2D02 at my RCX with this interface. That's the reason i'd (...) (25 years ago, 26-Jan-01, to lugnet.robotics)
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| | Sv: Chemical sensor?
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Yes, there are some chemical sensors available from (URL) other a pH sensor and an oxygen sensor. What sort of chemistry was on your mind? I am profesionally interested in among other glucose sensors, but I never tried to combine it with Lego. (...) (25 years ago, 26-Jan-01, to lugnet.robotics)
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| | MOC: Brick mixer
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You will find the Brick mixer at (URL) device reads a value on a card, then an arm places colored bricks picked from four feeders on a conveyor belt, ordered according the value read. You will find here photos, films, code and full building (...) (25 years ago, 26-Jan-01, to lugnet.announce, lugnet.robotics) !
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| | Re: Chemical sensor?
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"bernard" <bernardREMOVE.tyers....ieREMOVE> wrote in message news:G7rsHG.529@lugnet.com... (...) DCP had a pH sensor (URL) that can interface to the RCX with an adapter. (25 years ago, 26-Jan-01, to lugnet.robotics)
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| | Chemical sensor?
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Hi all, does anyone know of a chemical sensor for *any* of the mindstorms kit. thanks bernard (25 years ago, 26-Jan-01, to lugnet.robotics)
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| | Re: How many motors can accept a RCX ?
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Alexandre, My guess would be that the the Motor killed the RCX, It seems to be that the newer Technic motors (i.e. Mindstorms motors) often exibit this failure mode. I have had three go this way, and I have heard reports of other people who have had (...) (25 years ago, 26-Jan-01, to lugnet.robotics)
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| | Re: How many motors can accept a RCX ?
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The outputs on the RCX can sink about 500mA of current, and each motor draws up to 200mA when stalled. You can put two on the output and stall them before the thermal shutoff kicks in. I was under the impression (never tried it, mind you) that the (...) (25 years ago, 26-Jan-01, to lugnet.robotics)
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| | Re: Rotational Sensor & Gearing Down
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(...) I find it really frustrating that this has to be "discovered" over and over. I believe my fix for LegOS (a year ago?) fixes this problem. The sensor itself is very good. It only ever returns the discrete voltages (which vary by cable length (...) (25 years ago, 26-Jan-01, to lugnet.robotics)
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