 | | [PDF] step-by-step Grabber Arm instructions from legomindstorms.com
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Hello, Lego just released ((URL) step-by-step instructions for building a Grabber Arm, for its march contest subject. Unfortunately, they have again provided them as online instructions, in html format. So, I've created a pdf file including these (...) (26 years ago, 1-Feb-00, to lugnet.robotics.rcx)
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| | Re: Black
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Mike W. Burger <mike@hawaii.edu> schrieb in im Newsbeitrag: Fp0ys8.CB0@lugnet.com... (...) The colors we see lie in the range 400 to 700 nanometers. The response of the Lego sensors are completely different to our "sensors". This is why some of the (...) (26 years ago, 28-Jan-00, to lugnet.robotics.rcx)
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| | Re: Ultimate Expansion set Remote Control?
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The item is the 5206 Speed Computer. You can look it up in the catalog section at (URL) also appears here: (URL) lugnet.robotics.rcx, Mike Burger writes: [snip] (...) [snip] (26 years ago, 30-Jan-00, to lugnet.robotics.rcx)
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| | RCX.pm 0.5 Released
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I would like to announce the release of the first version of my RCX.pm perl module, version 0.5. This module allows you to communicate with your RCX using perl. It has been developed and tested under Linux, though it might run under other UNIX's. (...) (26 years ago, 29-Jan-00, to lugnet.robotics.rcx)
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| | Re: lego photo scanner...
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Jay <getochkn@home.com> wrote in message news:Fp0z10.D4H@lugnet.com... (...) The LEGO light sensor is a silicon phototransistor which is mostly sensitive to infrared light. It would be very insenstive to blue light. There is some more information (...) (26 years ago, 29-Jan-00, to lugnet.robotics.rcx.nqc, lugnet.robotics.rcx)
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| | Re: Black
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(...) True, I was shocked at all the colors that were "white". I think part of this is due to the poor quality of the construction paper. Close examination indicates a fair amount of unstained fiber, for instance the black read a lousy 47, compared (...) (26 years ago, 29-Jan-00, to lugnet.robotics.rcx)
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| | Re: Black
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(...) Keep in mind that the light sensor generates a red light, so you're really measuring the reflectivity of the target in the red part of the spectrum. Thus red is as reflective as white (some of the other results, e.g lavendar, are still pretty (...) (26 years ago, 29-Jan-00, to lugnet.robotics.rcx)
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| | Re: Black
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I attempted to do the "black vinyl between LED and sensor" modification that Ralph Hempel documents on his site, but I was unable to get the vinyl to slide between the LED and the sensor (too tight a fit). So I used a small wire (toothpick would do (...) (26 years ago, 28-Jan-00, to lugnet.robotics.rcx)
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| | lego photo scanner...
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has anyone thought of an advantage to using two light sensors in the basic photo scanner robot that people have built. I'm working on one right now (mostly the vb programming right now for the pc side and pqc for the rcx). i have two kits to use, so (...) (26 years ago, 28-Jan-00, to lugnet.robotics.rcx.nqc, lugnet.robotics.rcx)
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| | Black
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Since I am currently working on line following, I did some tests with the Lego active light sensor. I mounted one on a small test cart pointing down a bit more than 1/8 inch above the "ground". The 1.5 test pad reads white 57 black 38 green 46 I (...) (26 years ago, 28-Jan-00, to lugnet.robotics.rcx)
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| | Re: QC question
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If you exit from main, your programs return control to the ROM. Use PowerOff() to switch off RCX -- ___...___ Ferrara Francesco Vlad Dumitrescu <vladdu@nospam.hotmail.com> wrote in message news:Fou0IK.5J3@lugnet.com... (...) routines (...) let (...) (26 years ago, 24-Jan-00, to lugnet.robotics.rcx)
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| | Re: sending keepalive... ???
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Hi Rossz (...) Yes, I downloaded the legOS.srec on top of the existing Lego firmware and some programs. When you download the legOS firmware will anything currently in RAM be deleted? I'll try taking the batteries out for a while and starting again. (...) (26 years ago, 26-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Bug in WinlegOS installer
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In my rush to get the package released I made "one more insignificant change". This resulted in a bad path setting being placed in the autoexec.bat file. At the end of the install skip rebooting and open autoexec.bat in the editor. The installer (...) (26 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx)
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| | Re: more user questions
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Thanks, your directions worked perfectly. (...) Originally, the line appended to autoexec.bat was (something like): set path=set path=c:\LEGOS\H8\BIN...ath%%path% which I altered to: set path=c:\LEGOS\H8\BIN...BIN;%path% (26 years ago, 26-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: which motors for an rcx
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(...) They will all work - I posted some information about them here: (URL) Baum (26 years ago, 25-Jan-00, to lugnet.robotics.rcx)
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| | Re: more user questions
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A general note, there is a README.WRI file. This includes information beyond what Markus originally wrote in README. Perhaps I should have deleted his README (I include it in README.WRI, anyway). Open your copy of MAKEFILE. You'll find this line: (...) (26 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Ultimate Expansion set Remote Control?
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(...) I got the same regarding a call I made to ask about the new Technic guys (8300) and this date is apparently accurate then. Anyone know if we can pre- order things or make an order which includes a new item and not pay extra shipping for it to (...) (26 years ago, 25-Jan-00, to lugnet.robotics.rcx)
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| | Ultimate Expansion set Remote Control?
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One of the first things I purchased was the Mindstorms remote control. It is not expensive, less than $20 'merican. It can send messages 1, 2 and 3 (three buttons) It can force motors on forward, or reverse overriding a running program (three pairs (...) (26 years ago, 25-Jan-00, to lugnet.robotics.rcx)
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| | Re: sending keepalive... ???
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(...) If the readme file says the demo LX files are included, that is a mistake (or should I include them?). I'll have to correct it. As for your download problem, did you download the firmware first (firmdl3 legOS.srec)? LX files are relocatible (...) (26 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | more user questions
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I too have had my problems with this system. Perhaps they come from my inexperience with LEGOS or UNIX, which doubtless is apparent in my description below: Downloading and installing went well. Then, after correcting a minor SET PATH syntax error (...) (26 years ago, 25-Jan-00, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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