 | | Re: News sensors and the RDS
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(...) Just the touch and Temp sensor I'm afraid. The light Sensor will work as a passive. (ie no red light). The Rotation sensor won't work at all. Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 16-Jan-01, to lugnet.robotics)
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| | News sensors and the RDS
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i am thinking of buying the RDS faitly soon. Do the other sensors lego sells work with the RDS. Thanks Mike out (25 years ago, 16-Jan-01, to lugnet.robotics)
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| | Re: I ordered a 1.5 and was sent a 1.0 Good or Bad?
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Well, you were lucky. I contacted Lego at the number you gave me and tried to see if they would send me an upgrade as well. They will, but for $25 US ($40 Cdn). Bummer. It's the second time this week. Matthias Jetleb VA3-MWJ (25 years ago, 16-Jan-01, to lugnet.robotics)
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| | Re: Motor mis-match.
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Why not eliminate the vagueness of RCX's output circuitry altogether by running the motors from a stabilized bench supply set to 9.000 volts. That's is what I did when I characterized all my motors. I measured the rpm and wrote it on the bottom of (...) (25 years ago, 15-Jan-01, to lugnet.robotics)
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| | Re: Motor mis-match.
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I did it both ways, and got the same results(the order, not in exact speed). I think that the motors are 'tuned' in some way, because random error cannot occur 100% of the time. All motors went slower with the cable turned or the RCX on 'Reverse', (...) (25 years ago, 15-Jan-01, to lugnet.robotics)
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| | Re: Motor mis-match.
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At 09:53 PM 1/14/01 -0600, you wrote: > I was having a boring evening - so I decided to test some theories > about Lego motors - and at the risk of seeming pedantic - here are > my findings: Did you reverse the motors by issuing the "Reverse" (...) (25 years ago, 15-Jan-01, to lugnet.robotics)
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| | Re: Motor mis-match.
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(...) Very nice results! Another interesting thing to measure would be differences of the outputs. If you know these, you can put 3 motors each on its output and by changing the sequence measure whether the slowing down in a series is due to some (...) (25 years ago, 15-Jan-01, to lugnet.robotics)
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| | Re: Motor mis-match.
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Steve Baker writes: > We *need* stepper motors! Noooooooo!!!!!! We need motors like servo motors, where they come in a box, and have a built-in controller. Except that they need to be multi-turn, and you need to be able to say "Measure the angular (...) (25 years ago, 15-Jan-01, to lugnet.robotics)
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| | Re: Limit Switches without using sensor inputs
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Very sharp! A very clever and elegant solution to a common problem. (25 years ago, 15-Jan-01, to lugnet.robotics)
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| | Re: Motor mis-match.
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Thank you! I'm glad to see someone has taken a semi-scientific approach to the whole question. I have one correction/comment to make though: It's doubtful that the Lego motors will heat up significantly enough to affect their operating speed. There (...) (25 years ago, 15-Jan-01, to lugnet.robotics)
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