 | | Re: rotation sensor question
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Hej Martin, (...) probably nobody will ever know. A lot has changed in the last month. (...) That's not necessary, it is already done in showNumber (but not in setNumber). (...) So it's working for you, I hope? Jürgen (23 years ago, 4-Sep-01, to lugnet.robotics.rcx.java)
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| | Instructions for LegOS USB support
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A friend of mine recently bought the 2.0 RCX and sent me the following information regarding getting USB and LegOS to play nice. He did this on a Win2K system. I have the old 1.0 RCX so please don't ask me how to make this work. Here is his e-mail (...) (23 years ago, 4-Sep-01, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor question
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Hi there, (...) What happened? nothing appeared in the LCD? This looks 99% like the example I did yesterday - except that I put in a "LCD.refresh()" after the #showNumber call. I run 1.0.2 RC4 under Linux... // Martin (23 years ago, 4-Sep-01, to lugnet.robotics.rcx.java)
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| | Re: RCX IR protocol
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Hi, Juergen has done a small mistake in his example. (...) Better it should be ~f7=~11110111=00001000=08. If you want to get a little bit of math you may add every number to its complement and you will always get ff for the result. If we take (...) (23 years ago, 4-Sep-01, to lugnet.robotics.rcx)
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| | Re: RCX IR protocol
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(...) Take a look at (URL) (...) 55 ff 00 (...) complement, i.e. invert every bit separately. So for example ~f7=~11110111=00001000=10. (...) Good luck and show it to us when you are done Jürgen (23 years ago, 4-Sep-01, to lugnet.robotics.rcx)
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| | Re: tweaking around dlcd_show( )
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(...) Due to an error of my news-reader I missed some answers to your original post. Probably mine is a little late. bye Bernardo e-mail: dibbe@freestation.it (23 years ago, 4-Sep-01, to lugnet.robotics.rcx.legos)
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| | Re: tweaking around dlcd_show( )
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Thank you Bernardo. As I explained during the discussion with Martin, I decided to use rather arrays of functions. So now I've got my own functions like void Lcd4BotL(){ dlcd_show(LCD_4_BOTL); } and the use of the array with an index is now fully (...) (23 years ago, 4-Sep-01, to lugnet.robotics.rcx.legos)
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| | Re: RCX IR protocol
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On the page (URL) look under the description of his send command and you'll see he sends a query "10" (hex) and gets a response "ef". This value, 0xEF, is the logical not (modulus 0xFF) of the query value 0x10. The tilde means "not". Dennis (...) (23 years ago, 3-Sep-01, to lugnet.robotics.rcx)
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| | Re: tweaking around dlcd_show( )
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(...) The macros LCD_?_* expand to two integers, separated by a comma; dlc_show() is a macro that expects one argument but uses it as an argument to macros expecting two arguments. I don't know exactly how this works, but it's to do with the order (...) (23 years ago, 3-Sep-01, to lugnet.robotics.rcx.legos)
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| | RCX IR protocol
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Hi all, I was looking at the IR protocol described at (URL) and i dont quite understand. In paricular: What is the packet header? what does the ~ mean? (eg "RCX reply opcode is always ~query opcode") I am asking because i am writing an application (...) (23 years ago, 2-Sep-01, to lugnet.robotics.rcx)
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| | My seggiestion about remote control patach
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I think remote control can be divided two parts: 1. defatk mode, if you user doesn't provide remote handler, the default hanlder will be called, key M1-M3 send standard message 1-3, A1-C1/A2-C2 increase/decrease 1 outport port a-c, P1-P5 run program (...) (23 years ago, 3-Sep-01, to lugnet.robotics.rcx.legos)
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| | Re: legos application downlod protocol
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legOS has two download programs, firmdl3.exe for kernel, and dll.exe for user program, you can check source files /legOS/util/firmdl/rcx_comm.c and /legOS/util/dll-src/loader.c. You can find LNP in file /legOS/kernel/lnp.c and lnp-logical.c. Br (...) (23 years ago, 3-Sep-01, to lugnet.robotics.rcx.legos)
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| | Re: Bug in leJOS 1.0.2.RC6, fixed in 1.0.2.RC8
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(...) Ahem. Similar bug in RC8 too. I'm fairly confident that RC9 has fixed them all. Apologies once again :-( Paul (23 years ago, 2-Sep-01, to lugnet.robotics.rcx.java)
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| | legos application downlod protocol
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Hi, I'm a developer for leJOS (a Java VM on the RCX) and I am interested in how legos applications are transfered from the PC to the RCX (basically because the leJOS mechanism seems to be fairly flakey and I'd rather not try to implement an entire (...) (23 years ago, 2-Sep-01, to lugnet.robotics.rcx.legos)
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| | Bug in leJOS 1.0.2.RC6, fixed in 1.0.2.RC8
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If you downloaded leJOS 1.0.2.RC6 you should download and install 1.0.2.RC8 instead as there is a bug in RC6 that causes the RCX to ignore sensors and buttons for several minutes. Apologies for the inconvenience - Paul Andrews. (23 years ago, 2-Sep-01, to lugnet.robotics.rcx.java)
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| | Re: Non Robot uses of the RCX
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Hello, Sounds like it was an interesting project. Could you tell me what grade was your daughter in and did she use the standard RCX/Lego Software or something else? thanks (23 years ago, 1-Sep-01, to lugnet.robotics.rcx)
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| | Re: ANN: Article on dead-reckoning with a Mindstorms robot
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(...) Jerry, Thanks. I'm glad you liked the article. When I wrote it, I was hoping that other robotics enthusiasts would be able to adapt some of my techniques to their own dead-reckoning problems. It's good to see folks taking an interest in the (...) (23 years ago, 31-Aug-01, to lugnet.robotics.rcx)
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| | Re: Non Robot uses of the RCX
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My daughter's science fair project last year used an RCX and 3 light sensors to time a LEGO sled sliding down a metal ramp with a LEGO light on the opposite side of the ramp from each light sensor, she had a primitive break-beam sensor. She used the (...) (23 years ago, 1-Sep-01, to lugnet.robotics.rcx)
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| | monitoring touch sensor
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Greetings I have recently been learning to program in NQC and have run into a problem. I would like to monitor a touch sensor (with a Scout) so that if the sensor is pressed once and held down a motor runs forward. If the touch sensor is pressed (...) (23 years ago, 31-Aug-01, to lugnet.robotics.rcx.nqc)
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| | dll: error deleting program
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I've got legos version 0.2.5 and I get an error when I try to use the dll program. I've just installed the kernel and that seemed to go ok. Here's the output from dll: # ./dll --tty=/dev/ttyS1 -v -e ../code/helloworld.lx opening tty... KeepAlive (...) (23 years ago, 31-Aug-01, to lugnet.robotics.rcx.legos)
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