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 | | Re: BrickFest, here we come!
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| (...) JeffVW's so excited that he gave himself two extra days to get down there in one piece :) rtlToronto Car 2 is leaving Thursday morning. Bringing the rtlToronto contigent up to 8. Add Steve Hassenplug and Doug Carlson (who, even not from (...) (21 years ago, 5-Aug-03, to lugnet.events.brickfest)
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frequency
(score: 1.426)
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| | Re: New Moonbase Module - Queen Fleebnork Stasis Chamber
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| Fools! You don't know what you've done! You think it's natural that fleebnorks can be used as an energy source? It is an *engineered* species. For what purpose? I can only speculate, but consider this: Every major starship has at least one fleebnork (...) (21 years ago, 8-Aug-03, to lugnet.space, FTX)
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frequency
(score: 1.425)
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| | Re: LEGWAY software questions
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| (...) hmm. That's a good idea. I wish I'd have thought about it. That's going to make all my programs shorter, now. At least by 28 entries. :) Actually, one reason to have it that way is because it should process faster. I think. Is it faster to (...) (21 years ago, 15-Aug-03, to lugnet.robotics)
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frequency
(score: 1.424)
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| | Re: Weird RCX electrical ideas
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| <snip> (...) Well Jordan I know a little about DC motor theory. In essence a DC Motor and a DC Generator are the same thing. The amount of ripple (i.e. the frequency of the pulses although frequency is a bad term to use) is dependent on 2 things: (...) (21 years ago, 1-Sep-03, to lugnet.robotics)
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frequency
(score: 1.423)
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| | Re: Moore foolishness than ever
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| (...) Ahem. There is only one item in the Constitution of the United States that has any direct bearing on this as a religious matter, and that's the First Amemdment. To quote the appropriate section: "Congress shall make no law respecting an (...) (21 years ago, 27-Aug-03, to lugnet.off-topic.debate, FTX)
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frequency
(score: 1.422)
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| | Re: Smooth power or PWM for Lego train motors?
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| (...) Some model railroad companies actually use that sort of DC to power their trains to make them run more smoothly at low speeds... Fleischmann's "MSF" principle is based around converting 50Hz AC to DC with only diodes, and put the non-smoothed (...) (21 years ago, 2-Sep-03, to lugnet.trains)
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frequency
(score: 1.421)
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| | Re: Smooth power or PWM for Lego train motors?
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| (...) Being British I'm not too familiar with American trains (yet), Though I know about the multiple engines in real life. I would intend to triple head trains in a similar way when I have made enough American engines! The motor duty limitation is (...) (21 years ago, 4-Sep-03, to lugnet.trains)
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frequency
(score: 1.420)
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frequency
(score: 1.420)
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| | USB tower fast firmware download
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| Thanks to Dick Swan's help I have managed to get BricxCC downloading firmware in fast mode with the USB tower. All it took was using long enough timeout values (I'm currently using the tower default timeout settings when downloading firmware), (...) (21 years ago, 11-Sep-03, to lugnet.robotics.rcx)
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frequency
(score: 1.419)
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frequency
(score: 1.416)
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| | Re: IR Sensitivity - Was: 1.5/2.0 infrared problem
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| (...) Hello Mark, Thanks for your answer, this will keep me from dismantling once again my RCXs ! So it seems that LEGO modified RCX2.0 to get better compatibility with Spybots/Manas. Now a question remains, why did they increased carrier frequency (...) (21 years ago, 23-Oct-03, to lugnet.robotics.rcx)
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frequency
(score: 1.412)
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| | Re: IR Sensitivity - Was: 1.5/2.0 infrared problem
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| (...) Mine have been apart more often than I'd like, too! :-) (...) My guess would be mostly for increased communication speed. With the higher baud rate, the duration of the 2-byte Spybot/Manas packets is halved. This allows for fewer collisions (...) (21 years ago, 26-Oct-03, to lugnet.robotics.rcx)
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frequency
(score: 1.411)
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frequency
(score: 1.411)
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| | Re: Ultrasonic proximity sensor
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| (...) The frequency at which air is best matched is about 40kHz, several things with this: - low resolution because of the low frequency - going to take more power to get a given range of detection than using a commercial grade unit (works at 40kHz) (...) (21 years ago, 20-Nov-03, to lugnet.robotics)
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(score: 1.409)
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frequency
(score: 1.409)
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| | Re: Alternate IR Comm Setups
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| (...) Dustin, I believe that the built-in IR in a laptop uses a different carrier frequency than the 38KHz used by the RCX 1.0. I've seen reports here that the 2.0 RCX can be reconfigured (with some low-level system programming) to use a 76KHz (...) (21 years ago, 12-Nov-03, to lugnet.robotics)
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frequency
(score: 1.408)
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| | Re: Trains, DCC, and pbForth
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| (...) The basic DCC ack is defined as an increase of load on the track of at least 60ma for 6ms +/- 1ms. Normally this happens on a quiet track where all you have powered is the decoder being programmed at the time. However, if you have a bunch or (...) (21 years ago, 21-Nov-03, to lugnet.trains, lugnet.robotics.rcx.pbforth)
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frequency
(score: 1.406)
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| | Robolab, byte codes and assembler
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| Having investigated rotations sensors thoroughly, I conclude they have some serious design flaws. Most notably, some samples taken during voltage transitions can be impossible to differentiate from samples at entirely different rotational positions. (...) (21 years ago, 26-Nov-03, to lugnet.robotics.rcx.robolab)
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frequency
(score: 1.405)
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| | Re: Robolab, byte codes and assembler
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| Thanks for the response. (...) It seems to me it's a design flaw in the entire method of counting rotations, which relies on the theoretical ideal of "instantaneous" voltage changes, which can't be produced. You can't go from 2V to 5V without (...) (21 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
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frequency
(score: 1.405)
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| | Re: Robolab, byte codes and assembler
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| (...) Yes, I did read your information. It was very helpful - the best stuff I found on the subject. But as you said, modifying the sensor would probably disqualify. But, that does make me think again about the recent unavailability of the part . . (...) (21 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
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frequency
(score: 1.405)
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