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(...) Perhaps because rechargeables have a faster initial voltage drop than other types and they feel that could make it seem like the RCX has poor performance or isn't working right. Perhaps. (25 years ago, 6-Sep-00, to lugnet.robotics)
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| | RE: External supply for RCX (off topic)
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(...) safe though... All manufacturers seem to say that... its obviously a conspiracy from the multinational disposable battery cartel. Bastards, they probably killed all Nixons too ... actually will this now get flaged by Echelon... "Wow someone (...) (25 years ago, 5-Sep-00, to lugnet.robotics)
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| | Re: External supply for RCX
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(...) If that is the case with rechargeable batteries, then I stand corrected. I do wonder why LEGO would caution the use of rechargeables if they are safe though... Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 6-Sep-00, to lugnet.robotics)
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| | (canceled)
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| | Re: External supply for RCX
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The motor driver circuits in the RCX are current limited to somewhere around 500 mA if I remember correctly. The driver chips also have a temperature cutoff, so they will not overheat. You can short the motor with no damage. - pete. (...) (...) (25 years ago, 5-Sep-00, to lugnet.robotics)
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| | Re: New Lego fall sets
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(...) Well, what we have now is (URL), which is the test phase for what you're describing. However, I'm not too optimistic that this will lend itself well to technic. (25 years ago, 5-Sep-00, to lugnet.robotics)
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| | Re: New Lego fall sets
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(...) I called Lego Germany recently because we wanted some parts for uni (we use them in the lab... ;) ) and they said that at least in Germany they´ll soon (early September) have something like shop@home in Germany where you can order single parts (...) (25 years ago, 5-Sep-00, to lugnet.robotics)
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| | Re: New Lego fall sets
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(...) This seems to be redirected to (URL). Do you have any more information? It doesn't sound like those are very good replacements for the service packs. :( (25 years ago, 5-Sep-00, to lugnet.robotics)
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| | RE: IR Ball (was Soccer-Playing Robots)
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>>That wouldn't look as great as a free rolling ball - and the >>robots would perhaps have trouble finding it while it's in >>motion....but 28 LEDs is a heck of a lot! (...) Maybe experimenting with a lens type system to spread the light further... (...) (25 years ago, 4-Sep-00, to lugnet.robotics)
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| | New Lego fall sets
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Hello all, Today I got my hands on a new (Belgian) Lego catalog of september. In it, I find a lot of new models (for Belgium and The Netherlands), such as the DSDK, those two huge Star Wars models and a lot of racing creatures. Now I want to ask a (...) (25 years ago, 4-Sep-00, to lugnet.robotics)
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| | Re: External supply for RCX
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(...) The only issue with the standard rechargeable ones is if the motor(s) short the resulting current drain could damage something. I'm sure we've all shorted a rechargeable and had the rubber wire casings melt off from the 'heated exchange'.. (...) (25 years ago, 5-Sep-00, to lugnet.robotics)
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| | RE: RCX IR-Tower and Vision Command
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This has been noticed before. I would guess that it is the result of an engineering change on the PC board, well after the molds for the tower plastic parts had been machined. They (TLG) probably tried it out, found it worked anyway, and didn't (...) (25 years ago, 4-Sep-00, to lugnet.robotics)
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| | Re: Limited slip differential
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(...) How about this for a thought - I remember reading somewhere about using the differential to keep a tracked vehicle on a straight path using one rotation sensor: (URL) using another differential in this capacity, it should be possible to detect (...) (25 years ago, 4-Sep-00, to lugnet.robotics)
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| | Re: Limited slip differential
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(...) Nice :-) (...) Time for the pedant to strike again - I think you are right in saying that this part serves a similar purpose to a synchro in a real car, but the real one gradually sychronises the speeds of the axle and the "idler" gear so that (...) (25 years ago, 4-Sep-00, to lugnet.robotics)
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| | Re: External supply for RCX
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(...) quite a (...) compared (...) I regularely run my RCXs on NiMH Sanyo rechargable batteries and they works very well. Voltage is lower, but they're much more current capable then the alkaline technology ones. Ciao Mario (25 years ago, 4-Sep-00, to lugnet.robotics)
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| | Re: Vision Command
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the color sensing software works great recognizing greens, blues & reds. It has a hard time recognizing black. which kind of hinders my project of making a self recognizing robot. (it has a hard time recognizing the lens section) lighting - (...) (25 years ago, 3-Sep-00, to lugnet.robotics)
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| | Re: Limited slip differential
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Now I see it. I found the gear you were talking about on the Technica site. This if very serendipitous, as I have recently been pondering how to make a locking diff with Lego. Thanks for the intel! - Greg Simon Bogaert wrote: <snip> (...) (25 years ago, 2-Sep-00, to lugnet.robotics)
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| | RCX Sound Volume
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I built a 'communications trailer'. A truck moves it into position and stops. A mast with an antenna on the end erects. A 'satelite uplink' is establishe (plays a tune). The mast returns to the park position and the truck hauls it off. Great demo. (...) (25 years ago, 2-Sep-00, to lugnet.robotics)
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| | Re: IR to FM
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Hi, Here is a link on ebay for the exact item I was talking about: (URL) Original Message ----- From: "Simon Bogaert" <lego-robotics@crynwr.com> To: <lugnet.robotics@lugnet.com> Sent: Thursday, August 31, 2000 6:12 PM Subject: Re: IR to FM (...) (...) (25 years ago, 2-Sep-00, to lugnet.robotics)
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| | RCX IR-Tower and Vision Command
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Hello, Today I was some trying with the Vision Command. I knew camera's are able to see IR-light. When I point the camera at the IR-Tower I see some realy strange. The IR-LEDS aren't behind the "plastic lens" . Where is that lens for? With kind (...) (25 years ago, 2-Sep-00, to lugnet.robotics)
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