 | | LEGO Robots used in lab course
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Hi! Here in Uppsala, we have used LEGO RCX bricks running LegOS for a course in real-time systems. More information about the lab, and some MPEG movies of the final robots, can be found at: (URL) (23 years ago, 26-Jun-01, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Troubleshooting LeJOS... how?
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First attempt ever at using leJOS. 1) Windows2000 2) System variable RCXTTY=COM1 3) NQC, ROBOLAB, RCX Code, and VB all work fine 4) New batteries in RCX, new battery in tower 5) lejos lib directory in CLASSPATH 6) lejos bin directory in front of (...) (23 years ago, 26-Jun-01, to lugnet.robotics.rcx.java)
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| | Robot Transfer Protocol (a Hack from MacHack)
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(URL) Transfer Protocol is a way to transfer text data from one computer to another. For MacHack it turned a typed message into a dialog box on the other computer's screen. The phrase suggested by the audience was "Shave My Poodle"." -Ben (23 years ago, 25-Jun-01, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | REALbasic and serial ports
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Hi all, I want to try REALbasic with the Lego RCX. I think that this could be another programming tool for the Macintosh to do everything nearly like Visual Basic and Windows. Therefore I need some program code to use the serial ports in my (...) (23 years ago, 24-Jun-01, to lugnet.robotics.rcx)
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| | reliable lnp ...
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Hi, i always thought that LNP isnt reliable. Although this seems to be true in general, because lnp.c does not send any acknowlege-packets back, when downloading code (program.c) acknowledge-packets ARE sent back to to the PC (DLL), right ? So my (...) (23 years ago, 24-Jun-01, to lugnet.robotics.rcx.legos)
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| | Re: RFC compliant TCP/IP and /or a new Version of LNP
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(...) There was a while back, but I haven't heard anything for a while. (...) You might try one of the embedded versions of Linux. ROSCO (23 years ago, 23-Jun-01, to lugnet.robotics.rcx.legos)
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| | Re: Good news (Bad Rcx of ir transmitter)
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(...) Dan, my experience with an RCX1.5 is that the IR tower and RCX communicate unnerringly at a distance of (say) 20 cm under low light conditions. Also, the remote control accessory unit will start and stop programs at a distance of 6 meters (...) (23 years ago, 22-Jun-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | RFC compliant TCP/IP and /or a new Version of LNP
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Hi, is there someone who is currently working on a real (RFC-compliant) TCP/IP implementation for legOS to make the lnp obsolete ? Does anybody know where to find an extremely small TCP/IP implementation that could be ported to legOS ? PS: When will (...) (23 years ago, 22-Jun-01, to lugnet.robotics.rcx.legos)
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| | Re: lnp rcx hostaddress
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(...) Hi, could you please post the code ? Thanks Cu, Olaf "Dammit Jim, I'm a programmer not a brain surgeon!" (23 years ago, 22-Jun-01, to lugnet.robotics.rcx.legos)
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| | Re: Good news (Bad Rcx of ir transmitter)
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DH> I believe that that may DH> be because of background light, has anyone ever experienced this problem? Hi, this is indeed a possible cause of errors... have you tried putting tower and RCX under a box and then trying to transmit? (23 years ago, 22-Jun-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | Good news (Bad Rcx of ir transmitter)
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I have to share good news about my RCX and ir transmitter, I have tried just about every firmware that is available for download on the net. When using a tip from someone on the list I tried the Lego firmware 2.0 beta and got the ir transmitter anbd (...) (23 years ago, 22-Jun-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | Re: Bad Rcx's or bad ir
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(...) I hope you proved (somehow) that the problem is *not* with your serial port. Even if you have selected which COM port (or let it select automatically) there is the possibility the signal is not getting through. Does the green light in the (...) (23 years ago, 21-Jun-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | Re[2]: Bad Rcx's or bad ir
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Hi, maybe you are using a too-old battery in the tower? (23 years ago, 21-Jun-01, to lugnet.robotics.rcx)
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| | Re: Bad Rcx's or bad ir
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Dan, I had the same problem with a newly purchased RCX - turned out to be the tower. I rang Lego support, they did some trouble-shooting and finally told me to take it back and get a replacement. I managed to change the whole set, so I can't say for (...) (23 years ago, 21-Jun-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | Bad Rcx's or bad ir
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I believe that i have a dead rcx, or a problem w/ the ir transmitter (doubtfull). I have a Lego Mindstorms Robotics Invention System 1.5, and have succesfully installed the firmware using the cd given along with the set. But when i try to download (...) (23 years ago, 20-Jun-01, to lugnet.robotics, lugnet.robotics.rcx)
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| | Version 1.2 of the NQCEditor & RCXControl Released! (For PocketPC MIPS & ARM)
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Version 1.2 of the NQCEditor & RCXControl Released! This is the Rainer Keuchel Version. This is for the PocketPC PPC and HPC. MIPS and ARM supported! It's located here: (URL) features including the ability to download firmware, compile, download, (...) (23 years ago, 20-Jun-01, to lugnet.robotics.rcx.nqc, lugnet.robotics, lugnet.robotics.rcx)
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| | Re: problem with floating point numbers (legOS 0.2.5)
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(...) Yes, the gcc version (2.96) which comes with RH 7.1 doesn't compile the things older versions used to do it. For example try to recompile kernel 2.2.5 and you'll see a strange error con checksum.S. As far as I know 2.96 is not a stable (...) (23 years ago, 19-Jun-01, to lugnet.robotics.rcx.legos)
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| | May Dario Laverde's RCX java API work with RIS1.5 ?
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hi, I am sure Dario Laverde's RCX java API is based on RIS1.0. But the currently sold RIS version is 1.5. I want to use Laverde's RCX java API to control the robot made of RIS1.5. Is it possible? Any response would be appreciated. Yang (23 years ago, 19-Jun-01, to lugnet.robotics.rcx.java)
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| | Re: RCX Controlled Mobile Decoupler and Train Marshling Station
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Thanks for a reader to tell me using VirtualDub.sourceforge.net to edit my video files, now you can download them at (URL) Marshling can marshal train, for example, the original train is 321L (car3+car2+car1+loco), after marshaling, train will (...) (23 years ago, 19-Jun-01, to lugnet.trains, lugnet.robotics.rcx, lugnet.robotics.scout)
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| | Re: Rotation Sensor
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Ben, Thanks for the response. I was interested in the "Wait for Rotation". I was not able to duplicate your suggestion, but I learned a great deal trying. Robolab is a very interesting approach to programming. I am glad that I have your book to lean (...) (23 years ago, 19-Jun-01, to lugnet.robotics.rcx.robolab)
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