 | | navigator class
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Hi! I'm controlling my robot with the navigator class. For my recent visual servoing project I need to stop the current travel command and call it once again with new distance information. The old movement should be stopped and the new one started. (...) (18 years ago, 1-Jun-06, to lugnet.robotics.rcx.java)
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| | Java on the NXT
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I got lucky and now have a NXT on my desk, thanks to the MDP. Now is a good time to make suggestions for the API of the NXT lejos. Roger Glassey (18 years ago, 8-Mar-06, to lugnet.robotics.rcx.java)
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| | AW: lejos program terminating immediately
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Hi Jason, you have to loop within your main program, otherwise main() will be left. E.g. use while (true) { Thread.sleep (1000); } or, use a button listener, and exit when some button has been pressed. HTH, Jochen (...) (19 years ago, 11-Aug-05, to lugnet.robotics.rcx.java)
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| | lejos program terminating immediately
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Hi, I'm trying to use leJOS to display the current value of the rotation sensor I have hooked up to Sensor Port 1, but when I run the program, the RCX just beeps and ends the program immediately. Here's my code: import josx.platform.rcx.*; public (...) (19 years ago, 10-Aug-05, to lugnet.robotics.rcx.java)
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| | Problem with LDT plugin
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Hi, I'm starting with lejos and I try to use the plugin LDT 1.2.0 for Eclipse 3.0 with Windows XP. When I try to run (Run As > leJOS), I get the message : An internal error occurred during: "Launching". java.lang.IllegalArg...Exception: Path must (...) (19 years ago, 8-Jun-05, to lugnet.robotics.rcx.java, FTX)
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| | [Ann] Jurtle 1.8 - Now with LeJOS support
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I would like to announce the release of Jurtle 1.8, a simple IDE for learning programming in Java. What makes this release pertinent to this group is that Jurtle now integrates with the LeJOS tools and API for programming the LEGO Mindstorms (...) (19 years ago, 17-May-05, to lugnet.robotics.rcx.java)
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| | Re: Showing Strings on LCD
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Hi Armin, (...) probably because it runs out of memory. This is hard to avoid with strings, as Lejos doesn't garbage collect memory. Either you generate too many strings, or you have an old version of Lejos that is not careful enough in TextLCD. To (...) (19 years ago, 16-May-05, to lugnet.robotics.rcx.java)
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| | Re: Showing Strings on LCD
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(...) Can you post your source code (or the relevant bits at least)? Thomas (19 years ago, 9-May-05, to lugnet.robotics.rcx.java)
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| | Showing Strings on LCD
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I have a RCX and three Sensors. I want to have the three sensor-values on the LCD-screen. I had an idea: changing the sensor-integer-values in String, so I have the 3 Values in a String I am showing on the LCD-screen. But if I run this in an (...) (19 years ago, 8-May-05, to lugnet.robotics.rcx.java)
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| | Re: urgent! lejos run error
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(...) (URL) you encounter a problem with LEGO robotics of any sort it is a very good idea to search the Lugnet newsgroups before posting a question. In this case I searched for "version not recognized" and found a post that will probably solve the (...) (19 years ago, 1-Apr-05, to lugnet.robotics.rcx.java)
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| | urgent! lejos run error
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Hi guys, im trying to get the Lejos vision package set up on my computer for a university project. I've got the motion example that comes with the package compiling but I'me still getting an error when I try to run it: Exception reading (...) (19 years ago, 31-Mar-05, to lugnet.robotics.rcx.java)
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| | Re: problem downloading
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Hi, (...) this means that the class files are in a newer format that Lejos cannot use, so the compiler needs a '-target 1.1' option (with Java 1.5 you may also need '-source 1.2'). It seems your Lejos version is rather old, the current ones put the (...) (19 years ago, 14-Mar-05, to lugnet.robotics.rcx.java)
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| | problem downloading
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hi .... i have a problem downloading my java programs to the RCX, they don't give any errors when compiling them using the lejosc command, but when trying to use the lejos command i get this error : Exception reading Test (...) (19 years ago, 9-Mar-05, to lugnet.robotics.rcx.java)
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| | Re: communication with USB on Linux
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(...) So, unless I move to the 2.6.10 kernel and CVS leJOS, there's little to no chance I'll get the desired bi-directional communication with the USB tower working. (19 years ago, 13-Feb-05, to lugnet.robotics.rcx.java)
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| | Re: communication with USB on Linux
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(...) Probably not. (...) You can keep it, just install the new one in a different directory and make sure you don't use the old one (change LEJOS_HOME and PATH). Jürgen (19 years ago, 13-Feb-05, to lugnet.robotics.rcx.java)
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| | Re: communication with USB on Linux
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Hi Juergen, Thank you for your answer. Some questions though: (...) Yes, I did. That solved some problems. (...) Does CVS work with my 2.4.26 kernel as well? Should I remove the 'old' leJOS version first? (...) Thanks Huub (19 years ago, 13-Feb-05, to lugnet.robotics.rcx.java)
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| | Re: communication with USB on Linux
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Hi Huub, (...) have you run make? (...) You can also get it working with the CVS version of Lejos and a Linux kernel >= 2.6.7, which includes the newest driver. To get and install Lejos from CVS do $ cvs -d:pserver:anonymous...root/lejos login $ cvs (...) (19 years ago, 13-Feb-05, to lugnet.robotics.rcx.java)
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| | Re: Help please !!!
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(...) No, the documentation only talks about the path, which is a system variable, not an env. variable. (I assume you are using windows) I think you will have better luck if javac really is in your path. To verify that it is, type path in the (...) (19 years ago, 12-Feb-05, to lugnet.robotics.rcx.java)
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| | communication with USB on Linux
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Hi, For some time I've been trying to get bi-directional communication using: - Slackware Linux 10.0 - leJOS 2.1.0 - USB IR-tower - RCX 2.0 So far I've managed to upload leJOS and the written software to the RCX. However, when I try to run the (...) (19 years ago, 12-Feb-05, to lugnet.robotics.rcx.java)
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| | Re: Help please !!!
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does documentation not talk about what values should be given to JAVAC env variable (...) (19 years ago, 5-Feb-05, to lugnet.robotics.rcx.java)
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