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 | | Re: Visiting LEGOLAND Billund
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| hi! Visiting Billund at this time of the year? Don't forget rainproof clothes. The weather can change fast in Jylland, it's a low and windy stretch of land between two oceans, were on some westwind days the weather doesn't have time to stay long but (...) (22 years ago, 20-Oct-02, to lugnet.legoland.billund, lugnet.loc.dk)
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brick, wall
(score: 3.027)
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| | Chat with Kate & Jake
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| Hello, On www.1000steine.de, we had a Chat session this evening with Kate and Jake from LEGO Direct. First I have to say a huge "Thank you", since both ventured to chat with one of the most critical communities in the world - with the griping (...) (21 years ago, 8-Dec-03, to lugnet.general) !!
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brick, wall
(score: 3.027)
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| | FA (eBay): more NEW parts lots
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| See them all at: (URL) NEW LEGO 144 Light Grey 1x1 Plates (URL) bids yet, Ends Apr-18 16:24:00 PST JH1002 NEW LEGO 108 Light Grey 1x2 Plates (URL) bids yet, Ends Apr-18 16:24:00 PST JH1003 NEW LEGO 12 Light Grey 3x6 Triangles (URL) bids yet, Ends (...) (23 years ago, 11-Apr-02, to lugnet.market.auction)
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brick, wall
(score: 3.027)
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brick, wall
(score: 3.027)
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| | FA (eBay): 100 more parts lots!
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| See them all at: (URL) NEW LEGO 140+ Black 1x2 Handle Plates (URL) bids yet, Ends Mar-12 13:13:12 PST JH0783 NEW LEGO 40 Dk Grey 1x2 Handle Plates (URL) bids yet, Ends Mar-12 13:13:12 PST JH0784 NEW LEGO 40 Lt Grey 1x2 Handle Plates (URL) bids yet, (...) (23 years ago, 5-Mar-02, to lugnet.market.auction)
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brick, wall
(score: 3.027)
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| | LONG!!! - RCX Radarbots and distance measurement
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| RCX Radarbots and distance measurement While I like the idea of a radarbot, most of the algorithms I've seen for implementing it were basically "You're close when the return signal starts to get really noisy." I wanted to know more about what was (...) (26 years ago, 5-Feb-99, to lugnet.robotics)
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measurement
(score: 1.995)
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| | Re: Gear Down Robot`
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| (...) Ok, so it's not 8:40 ratiom but you can easily compensate for that. Pictures are at: (URL) also working on a motor control library that combines speed measurement, distance measurement, stall detection and proprotional feedback for control. (...) (24 years ago, 12-Mar-01, to lugnet.robotics)
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measurement
(score: 1.994)
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| | Re: Ultrasonic Distance measurement
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| (...) the (...) and (...) I've used the following circuit with 40SQR (which, I presume, is the same thing). 5V ,----R------, | | 1M | | | | R 47k | |\ | ,-----, | | | \ | | *---...---÷-----*--*- \ | | | | | >----*--- |40SQR| *--------*+ / | | | | / (...) (18 years ago, 14-Oct-06, to lugnet.robotics)
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measurement
(score: 1.993)
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| | 15' max measurement
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| Yup, it looks like 15' is about as far as I can measure. In fact, if the distance is _too_ great, I start getting weird measurements, on the order of 8 or 9 feet. Strange. I turned the gain up a bit, which keeps those erratic measurements from (...) (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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measurement
(score: 1.993)
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| | Star Wars LDraw Models by Nth Dimension Website
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| Get the nth Dimension Star Wars CAD model again. I had posted these models to brickshelf after the nth-Dimension website went down. After the brickshelf moderating went up, my folder has been blocked. So I have made a webpage so you can stil get the (...) (22 years ago, 19-Dec-02, to lugnet.starwars, lugnet.cad) !
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dimension
(score: 1.993)
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| | Re: 15' max measurement
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| (...) I believe it would matter what type of material you reflect the pulse off of, I would guess. Different surfaces have differenc acoustical properties. Just like they have those silent rooms and echo chambers, etc. (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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measurement
(score: 1.993)
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| | Re: 15' max measurement
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| (...) I just noticed that the Polaroid Specs say that the transducer pulse current is 2 A. 100mA idle. Since it was mentioned previously that the HB's VR is rated for 1 Amp, how would this affect the sonar? Perhaps whatever is left of the 1A (...) (28 years ago, 28-May-96, to lugnet.robotics.handyboard)
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measurement
(score: 1.993)
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| | Ultrasonic Distance measurement
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| I have a 40 Khz ultrasonice transmitter reciever pair. I am using the transmitter on a 40Khz oscillator circuit. I do not recieve anything on the reciever. Can anybody please help???? The transmitter am using is SQ40T and the reciever is SQ40R. (18 years ago, 9-Oct-06, to lugnet.robotics)
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measurement
(score: 1.993)
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| | Re: robot building....
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| "Ivan Louch" <ivn@idirect.ca> wrote in message news:GsFMvD.Fnx@lugnet.com... (...) measurement (...) I meant to "cube" (^3) 200 mm. I didn't mean it to read as I had typed it. My mistake! I used millimetres because that's the fundemental unit that (...) (23 years ago, 4-Mar-02, to lugnet.org.ca.rtltoronto)
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measurement
(score: 1.992)
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| | Re: Ultrasonic Distance measurement
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| (...) Sorry for the thread hijacking, but... Stef, where are your wonderful Lego sensor hardware pages? I can no longer find them on the web! I'm missing them, and probably a lot of people too! Philo (18 years ago, 14-Oct-06, to lugnet.robotics)
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measurement
(score: 1.992)
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measurement
(score: 1.992)
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measurement
(score: 1.992)
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| | wits end with PWM measurement
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| Dear All I'm at my wits end on this one. It's a little routine to measure on PA0 a pulse width of a PWM signal generated on PA7. The two pins are linked with a jumper. I've looked through all the books and and handyboard archive, but all I get is (...) (24 years ago, 22-Apr-00, to lugnet.robotics.handyboard)
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measurement
(score: 1.991)
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| | Re: IR-based proximity measurement
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| (...) Well, there were a couple of typos, but only one I found that was critical. If you are using a "max-picking LIDAR" method, you do *not* want to divide by the number of samples. The variable "eyeon" in your code should end up with the brightest (...) (18 years ago, 9-Jun-06, to lugnet.robotics.rcx.nqc)
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measurement
(score: 1.991)
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| | Re: IR-based proximity measurement
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| (...) You're welcome - it's a fun problem. At least partially because it's one of the few times I've had to worry about the speed of bytecode execution under the standard firmware (see below). (...) Given what you are transmitting and how you are (...) (18 years ago, 11-Jun-06, to lugnet.robotics.rcx.nqc)
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measurement
(score: 1.991)
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