 | | droid kit at compusa $20
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Just letting everyone know, Compusa has the Droid developer kit for 19.99 (usa, 29.99 with a 10.00 mail in rebate) on sale through Saturday. (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | calculating sensor resistance (Ohm's Law)
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I've been helping my little sister with her RCX-intensive science project, but we just finished all the calculations and her results seem screwy. Does anyone who understands RCX internals and/or Ohm's Law have some time to look this over and make (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: calculating sensor resistance (Ohm's Law)
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hi Lauren, you're quiet right, the inside of the RCX (in touch-sensor mode) is ok, and Ohm's law is also. So the problem lies probably in the sensor used. The cheap resistive pressure sensors are totally non-linear, more expensive sensors are full (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | program wont stop running
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O.k., I've never had this happen before, and don't know why it's doing it now. A program as simple as: task main() { SetPower(OUT_A,7); OnFwd(OUT_A); } won't stop running after i hit the "Run" button on the rcx (1.5). Also, the little person in the (...) (24 years ago, 6-Apr-01, to lugnet.robotics, lugnet.robotics.rcx.nqc)
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| | Re: robotica on TLC
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(...) Well - wet climate, everywhere is relatively close to the ocean and they salt the roads in icy weather. Wet, salty conditions maximise corrosion rates. A new car can comfortably be rusted out in 5 years Contrast with Texas where the warm. (...) (24 years ago, 6-Apr-01, to lugnet.robotics)
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| | Re: New Outdoor Robot Photos
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Love those shots. Beautiful pictures. I am so green with envy. -- Bob Fay rfay@we.mediaone.net (URL) J. Mabelitini" <micahx@kih.net> wrote in message news:3ACE3181.9605DB...kih.net... (...) (24 years ago, 6-Apr-01, to lugnet.robotics, lugnet.publish.photography)
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| | Re: calculating sensor resistance (Ohm's Law)
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Stef Mientki <s.mientki@ids.kun.nl> wrote: : the inside of the RCX (in touch-sensor mode) is ok, and Ohm's law is also. I actually used temperature sensor mode, since I wanted a passive mode that wasn't just boolean. Would that have made a (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: robotica on TLC
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(...) My 6 year-old daughter and I enjoy a nice big bowl of popcorn each Monday night while we watch Junkyard Wars. I have heard that Junkyard Wars will be moving to California. Has anyone else heard that rumor. Also, I notice that they are looking (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: program wont stop running
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(...) Sounds to me the program has indeed stopped. It's just the motor that's still on. --k (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: program wont stop running
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(...) Well, I think this is doing exactly what I'd expect...here is the sequence of events: * You press the RUN button. * The little man starts running. * About a thousandth of a second later, it sets the power level to 7 * About a thousandth of a (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: calculating sensor resistance (Ohm's Law)
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Lauren, Your diagrahm is correct. Your voltage assumption is not. On RCX the full scale is 2 volts to 5 volts, not 0-5 like you have assumed. Try re-calculating with a 3 volt span. - pete. (...) -- Pete Sevcik sevcik@flash.net Techno-stuff Robotics (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: legs anyone?
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HEY! We crossed your gap!, in another day we'll climb your stairs! Infact!, now we will do it on two legs! .... Sir. =) (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: Junkyard Wars (Was Re: robotica on TLC)
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(...) They already showed a handful of episodes with all-American teams - although it wasn't entirely clear where they'd done the filming. It *looked* like they might have flown everyone to UK to save the cost of rebuilding the set. (...) Dunno - (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: New Outdoor Robot Photos
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Graet Pix and Great designs, I'd like to see video of them in action!!!! (...) (24 years ago, 7-Apr-01, to lugnet.robotics, lugnet.publish.photography)
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| | Re: calculating sensor resistance (Ohm's Law)
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Pete Sevcik <lego-robotics@crynwr.com> wrote in message news:3ACE6E90.3FA776....rr.com... (...) full (...) That is not true for passive mode. The scale is 0v = 0 and 5v = 1023 in passive modes like touch or temperature. The problem with what Lauren (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: program wont stop running
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(...) The program has stopped running. It stops as soon as it starts... You just need to STOP the motor when your done. Otherwise it just stays on... Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (24 years ago, 7-Apr-01, to lugnet.robotics, lugnet.robotics.rcx.nqc)
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| | Re: More juice out of the standard motors.
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Yes, but they used more prats then the RIS contains :/ They used two battery boxes to gain 18V using this coupling: (URL) had a motorcontrolled polarity switch to walk around the voltage limits in the RCX. /Tobbe (...) (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: droid kit at compusa $20
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In article <3ACE317E.8B5FB2A7@home.com>, Jason Stern <2busytobe@home.com> writes (...) Where's 'Compusa'?? (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Re: droid kit at compusa $20
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(...) The correct capitalization speaks for itself: CompUSA. (24 years ago, 7-Apr-01, to lugnet.robotics)
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| | Length of Diagonal Spreadsheet
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Hi Everyone, I just created a spreadsheet that I think will be useful to many of us. It shows the lengths of possible diagonals in terms of LEGO Units. I created it because I often find myself searching by trial and error for possible diagonal (...) (24 years ago, 7-Apr-01, to lugnet.org.us.smart, lugnet.robotics, lugnet.technic)
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