 | | 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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