 | | Re: navigation and communication
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(...) We have worked with a big chart with black crosses on a white wooden surface. This works pretty well, since with the reflection of the light of the LED, black and white can be easily recognised. Then the ambient light has not a big influence. (...) (19 years ago, 8-Jun-05, to lugnet.robotics.rcx.legos)
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| | Re: position calculating for robots
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(...) There are various geometries have been implemented in Lego bricks for this. Here is one example: (URL) searching Google for "Lego adder subtractor" for others. (19 years ago, 2-Jun-05, to lugnet.robotics.rcx.legos)
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| | Re: position calculating for robots
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(...) From something I read 12 years ago for my university project (a Lego robot of course, but pre-RCX), I think it required differential equations (ugh!). Probably a bit too memory-hungry for an RCX. Perhaps you could use the PC's computing power (...) (19 years ago, 26-May-05, to lugnet.robotics.rcx.legos)
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| | position calculating for robots
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Thanks Thomas for your idea. The matter is that I was thinking of using angle sensors in order to calculate the number of the turns that each wheel has driven (I am talking for a robot with 2 wheels). I think that some advanced maths are required (...) (19 years ago, 26-May-05, to lugnet.robotics.rcx.legos)
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| | Re: navigation and communication
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(...) In theory you can find position by having a 'giant pantone chart' on the floor - a sheet of paper like the test pad with coloured squares on it, and use the light sensor to detect which square the robot is on. Has anyone tried this? It will be (...) (20 years ago, 25-May-05, to lugnet.robotics.rcx.legos)
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| | navigation and communication
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Thank you Nathan. I think your link is really gonna help! Now do you know of any way making the robot calculating its position constatly? You see i want to make the robot send its position to another one so it can go there. Thank you again for your (...) (20 years ago, 24-May-05, to lugnet.robotics.rcx.legos)
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| | Re: RCX communications at brickos
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(...) Hi John when I started programming IR communication under brickOS the following site helped me to get off the ground: (URL) that helps. Best regards nathan (20 years ago, 24-May-05, to lugnet.robotics.rcx.legos)
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| | RCX communications at brickos
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Hello everybody. I am working at my postgraduate project at lego mindstorms and I am looking for information on programming the RCXs to communication with each other. I'd be grateful if you'd supply me with some links about this subject. Also (...) (20 years ago, 17-May-05, to lugnet.robotics.rcx.legos)
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| | downloading BrickOS firmware for first time
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Hi all, I have built brickos 0.9.0 on Linux platform kernel 2.4.29. Brickos was successfully built with only C (no c++) support. My Lego is RCX2.0 and I am trying to download for first time the standard firmware. For connection with the RCX I am (...) (20 years ago, 17-May-05, to lugnet.robotics.rcx.legos)
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| | Re: New Development
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(...) Sort of. Updated Linux, updated gcc h8 toolchain, switched from desktop to laptop system, therefore switched to USB tower... In the moment, I to get all up and running. Next step will be to benchmark the performance patches and then... we'll (...) (20 years ago, 10-May-05, to lugnet.robotics.rcx.legos)
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| | New Development
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Is anyone currently working on development of the BrickOS software? (20 years ago, 9-May-05, to lugnet.robotics.rcx.legos)
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| | Re: brickOS & Cygwin with BricxCC
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(...) I believe if you add set PATH=c:\cygwin\bin;%PATH% to your autoexec.bat file then you will be good to go. John Hansen (20 years ago, 4-May-05, to lugnet.robotics.rcx.legos)
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| | Re: brickOS & Cygwin with BricxCC
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Hello, I’m trying to get brickOS and bricxcc working on an old laptop that’s running win 98. I installed using the easy bricxcc tools When I try to compile I get this error: Unable to create process: Bash “ C:\cygwin\brickos\de...oworld.cmd Make (...) (20 years ago, 3-May-05, to lugnet.robotics.rcx.legos)
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| | Path Problems
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Hi. I'm running Brickos on Win98 and I'm having path problems. BrickOS works, but I'd like to use the BricxCC IDE. I need to set the path, though. I have already set the path in the past, and it was no prblem at all, but I've recently had my PC (...) (20 years ago, 29-Apr-05, to lugnet.robotics.rcx.legos)
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| | Re: Can't build brickOS on Linux
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(...) Look if there is a configure switch to disable building the standard C++ libraries (you don't need them for brickos). IIRC building g++ only gave an error after it built and installed the g++ compiler, but that was with gcc-3.4. (...) I think (...) (20 years ago, 28-Apr-05, to lugnet.robotics.rcx.legos)
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| | Re: Can't build brickOS on Linux
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(...) <skip problems with gcc 3.3> (...) It seems to fix the problem, but it needs the g++ compiler, which I cannot build for the h8300-hms platform: checking for extra compiler flags for building... configure: WARNING: No native atomic operations (...) (20 years ago, 28-Apr-05, to lugnet.robotics.rcx.legos)
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| | Re: Can't build brickOS on Linux
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(...) Try my patch brickos-gcc33.diff from (URL) should fix this problem. Best Regards, Jochen (20 years ago, 28-Apr-05, to lugnet.robotics.rcx.legos)
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| | Can't build brickOS on Linux
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Hi all, I just installed binutils and gcc, targeted at the h8300-hms platform. Worked fine, however, when I try to build brickOS (0.9.0), it bails with this error: make[2]: Entering directory `/home/bart/download...lib/float' (...) (20 years ago, 27-Apr-05, to lugnet.robotics.rcx.legos)
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| | Re: No hitachi gcc compiler found
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(...) Hi John Hansen Thank you for your help. I've used NQC with bricxCC progarm for few monthes. I learned programing with BrickCC. Now I love lego robotic and programing RCX. I did'nt know BricxCC has this option. Perhapes I have been busy with (...) (20 years ago, 14-Apr-05, to lugnet.robotics.rcx.legos)
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| | Re: No hitachi gcc compiler found
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(...) I recommend using the pre-built installers that I have on the BricxCC website. They make installing cygwin and the cross compilers trivially easy. You can install a slightly old version of brickOS and leJOS with these installers as well. Then (...) (20 years ago, 13-Apr-05, to lugnet.robotics.rcx.legos)
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