 | | 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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