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 | | MLCad wishlist (was Re: Ice Cream
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| (...) I'm not Mr. Big Rotation but I didn't see that as a big issue. Use the fine scale grid to get the rotation about right via the rotation buttons, then adjust by hand in the properties??? If I were naming off things to fix in MLCad my number one (...) (25 years ago, 2-Nov-99, to lugnet.cad)
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dimension
(score: 1.682)
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| | Re: The "geography" of local space
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| This thread just keeps going and going! (...) Right. Lindsay is referring to HD 209458. Catchy name, huh? 8^) The Doppler shift research team that I mentioned in an earlier post predicted that HD 209458 has a planetary companion. The object is (...) (25 years ago, 20-Nov-99, to lugnet.space)
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measurement
(score: 1.682)
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measurement
(score: 1.681)
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| | Re: your mail
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| (...) Yep. You used the wrong phone cord between the HB and the serial interface board. Fred recently answered that question on this group, I'd direct you to the archives of this list but I don't know where that is. The phone cord, I *think*, is (...) (27 years ago, 12-Aug-97, to lugnet.robotics.handyboard)
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wall
(score: 1.681)
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| | Re: positioning of robot
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| I missed the first posting, I liked the summary posted by John Whitten. Youcan take his posting one layer "up" to get at the abstractions if you want. These are: 1. Points of contact with the surface - More increases stability. 2. Drive Train (...) (27 years ago, 15-Aug-97, to lugnet.robotics.handyboard)
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wall
(score: 1.681)
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| | Re: Age average
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| (...) If you're talking about being "chopped up for hamburger", though, I think you're better off referencing Soylent Green. ;) Okay, now it's time to render "Time Bandits" or "Buckaroo Bonzai Across the 8th Dimension" with SW Lego--... LFB. (25 years ago, 12-Nov-99, to lugnet.starwars, lugnet.people)
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dimension
(score: 1.680)
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| | RE: IR scanner
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| Like Pete said, this won't work. When people use lasers (or sonar) to measure distance, they reflect the signal back to the source and use phase shift to make the measurement. The proposed scheme would have to compare arrival times between the (...) (25 years ago, 30-Nov-99, to lugnet.robotics)
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measurement
(score: 1.680)
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| | Re: IR scanner
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| (...) Um. Your frequencies are out somewhere... There is a factor of ten 'slip' in the figures being used here. In fact your oscillator needs to be at ten times this frequency for a 1ft/Hz measurement. (the figure in the first line should be (...) (25 years ago, 1-Dec-99, to lugnet.robotics)
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measurement
(score: 1.680)
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| | RE: IR scanner
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| The biggest problem I see with using rotating platforms, etc. is that they are slow and use up a bunch of I/O ports to implement well. There are a number of "one pixel" sensors that you can use with these implementations -- several have been (...) (25 years ago, 30-Nov-99, to lugnet.robotics)
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measurement
(score: 1.680)
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| | Re: ASP and Spirit.ocx
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| (...) yeah I've had a stab at this a while ago. I should write this up I guess. The main problem I found with the spirit.ocx is the that (as far as I can tell) is not a console app, say like an ActiveX dll. Read the steps below I took.... 1. Install (...) (25 years ago, 14-Nov-99, to lugnet.robotics)
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dimension
(score: 1.680)
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| | RE: Tilt
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| The halobot I built uses a pure lego mechanism that does a similar trick with a rotation sensor ((URL) I use it for bump detection, but it would be serviceable as a tilt sensor. It takes a pretty good "tilt" to register the rotation sensor in a (...) (25 years ago, 1-Dec-99, to lugnet.robotics)
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measurement
(score: 1.680)
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| | Re: Rarity
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| (...) Rarity, hmmmmmm, there is no website that lists rare sets or any other rarity measurement. There are a few European collectors that I talk to that each has their own idea of what sets are rare. But this info is not divulged because people (...) (25 years ago, 6-Dec-99, to lugnet.general)
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measurement
(score: 1.680)
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measurement
(score: 1.678)
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| | Re: DC adapter
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| Good question. Answer: DO NOT USE REGULATED ADAPTERS WITH THE HANDY BOARD. I will add this to the FAQ, because it is not obvious, but the HB power circuitry was designed explicitly for CHEAPO UNREGULATED WALL WARTS ONLY. sorry, Fred In your message (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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wall
(score: 1.678)
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| | Re: lego mindstorms
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| What can it do & Is it worth getting ... It all depends on you. If you are familiar with the Lego / Technics stuff already, use motors with it - now you can automate them. If you like / want to make mechanical things - this is and ideal set I bought (...) (25 years ago, 30-Nov-99, to lugnet.robotics)
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dimension
(score: 1.677)
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| | 5206 timer
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| In the instructions of 8238, there are details of the new 5206 timer set. It is a small device with LCD display linked to a rotation sensor by a piece of wire. The instructions show how to fit it to the back axle of one of the dragsters. It would (...) (25 years ago, 18-Dec-99, to lugnet.technic)
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measurement
(score: 1.677)
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| | Re: Pseudocode
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| (...) One thing to remember: the input is the world (through the sensors) and the output are the robots actions on the world. A program outline repeat turn on drive motors repeat read wall/obstacle sensor until sensor reads an obstacle stop motors (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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wall
(score: 1.676)
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| | Re: Easy way for floating point calculations with RCX
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| Well it depends on how you do it. If you are going to use the trig calculations, then you need LegOs. If you are just converting the rotation sensor pulses to a measurement, then you should be able to get away with integers, if you adjust the (...) (25 years ago, 25-Dec-99, to lugnet.robotics)
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measurement
(score: 1.676)
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| | 2D positioning ???
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| I realise this is an open ended question but I will ask anyhow. We (as I have mentioned a number of times, probably maing in RCX newsgroup) have 6 RCX's that we wish to make into a demo for school kids. Ideally that demo would involve some sort of (...) (25 years ago, 8-Dec-99, to lugnet.robotics)
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dimension
(score: 1.675)
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| | Re: Introducing LEGO Direct
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| I don't mold plastic for a living but I think when you design plastic parts you have to design what you want to actually get, to a very high tolerance, and then you have to design the mold, which will have DIFFERENT dimensions than the desired part, (...) (25 years ago, 10-Dec-99, to lugnet.general, lugnet.cad.dev)
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dimension
(score: 1.675)
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