 | | Re: Can't open serial port in Linux
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(...) Currently there isn't any notion of an "error code" from the serial port class - opening the serial port just returns true/fals. I'm wary of adding error codes here because they'd need to be added in a portable manner (and across the Unix, (...) (25 years ago, 30-Dec-99, to lugnet.robotics.rcx.nqc)
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| | barcode reader for RCX (was: how does a bar code reader work?)
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(...) Well, I tried this, and it's hopeless. The RCX can't poll the sensor nearly fast enough, and even if it could you'd need a lens to focus the sensor better. (...) Instead of using my idea, I took the suggestion of someone else and just used a (...) (25 years ago, 30-Dec-99, to lugnet.robotics, lugnet.trains, lugnet.robotics.rcx)
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| | Re: Can't open serial port in Linux
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Hi. I just got through fixing a similar problem with my linux box (the fix involved a lot of tedious changing IRQ's in the BIOS, with a lot of tedious rebooting in between). Beyond Dave's good advice, you might want to check out the linux serial (...) (25 years ago, 30-Dec-99, to lugnet.robotics.rcx.nqc)
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| | RCX as TV remote?
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Hi, all. I just got an RIS for Christmas, and I've been happily alternating between hacking on it and lurking here and at the various Lego sites on the web. Yippee, legos! Ahem. I've been interested in the possibilities of using my Palm IIIe as a (...) (25 years ago, 30-Dec-99, to lugnet.robotics.rcx.legos, lugnet.robotics.palm)
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| | Re: differences between 9719 and 9747?
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Hi, Note that if you get the RIS 1.0 -> RIS 1.5 upgrade (costs $25.00, but free if you bought your RIS 1.0 after August), it includes the 60 missing pieces, additional CD, manuals, and test pads. Plus the RIS 1.0 has the AC adapter while the RIS 1.5 (...) (25 years ago, 30-Dec-99, to lugnet.robotics.rcx)
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| | Re: differences between 9719 and 9747?
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(...) Here are the differences in parts. They are alse some differences in manual and software, but I don't know them. New parts in set 9747 (Mindstorms 1.5), not in set 9719 (Mindstorms 1.0) Count Part # Part Color 4 3794 1x 2 plate, 1 stud Gray (...) (25 years ago, 30-Dec-99, to lugnet.robotics.rcx)
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| | Installation of pbForth 1.11 Problems
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Last night I tried to install pbForth 1.11 with nqc (2.02). It beeped like it was installed and "4th" was displayed on the screen, but I could not turn it off. I had to take out the batteries to get it to turn off, but by then, the pbForth was gone. (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.pbforth)
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| | Re: touch sensors - two at a time ?
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(...) The problem you are having, is that the processor is much faster than a human being... The code will allways tend to see one sensor befor the other, because of the processors speed, unless you can hit them together to within a very few mSec. (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.legos)
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| | RCX "locking up" when trying to use dll
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Has anyone experienced the RCX "locking up" when trying to use dll? When I try to download a .lx file with dll, the brick freezes. It won't respond to any buttons and I have to take the batteries out and re-load the firmware. Any ideas why this is (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.legos)
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| | Re: Can't open serial port in Linux
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Check the permissions on /dev/ttyS1. I think the default is for it to be locked down to superuser only. If this is the case, then running nqc from a normal user account would cause the error you got. You'll need read/write rights to /dev/ttyS1 in (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.nqc)
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| | Problems with legOS-0.2.2 on Windows 95
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Hi, I followed the instructions on (URL) install legOS-0.2.2 on my Windows 95 PC. I downloaded all the files, installed the packages, and modified the makefiles. And was finally ready to compile, the results of the compilation is shown below... (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.legos)
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| | Re: touch sensors - two at a time ?
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(...) It's not a race condition, strictly speaking. It's more of a data sampling error. If you run that it a tight loop you will test the sensors hundreds or thousands of times a second. In order to see a simultaneous press you'd have to hit them at (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.legos)
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| | Re: touch sensors - two at a time ?
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(...) If I understand your problem correctly, it has nothing to do with legOS specifically. Therefore, I will answer, even though I have no experience with legOS. The problem is, there is a very small amount of time where, while you're pushing on (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.legos)
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| | touch sensors - two at a time ?
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I'm trying to build a sensor apparatus at the front of my bot, and it works, mostly. It's made up as a pair of touch sensors. The idea being that if one is activated, it turns around slightly, to avoid the sensor, but if both are activated, we (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.legos)
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| | Can't open serial port in Linux
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I'm having some troubles downloading to the RCX in Linux, I have RXC_PORT set to /dev/ttyS1, which is the correct serial port, and then I run nqc and get: [brian@magic bin]$ ./nqc -d ../test.nqc Downloading Program:error Could not open serial port (...) (25 years ago, 29-Dec-99, to lugnet.robotics.rcx.nqc)
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| | firmware upload with NQC...
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first off, i'm using NQC with Linux. when i try to upload the firmware image from the MindStorms CD-ROM, i get the following: [kjs@localhost nqc_lnx_2_0_2]# ./nqc -firmware ../FIRM0309.LGO Downloading firmware:... Problem talking to IR device the (...) (25 years ago, 27-Dec-99, to lugnet.robotics.rcx.nqc)
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| | Re: R2D2 and RCX : the LEGO official stuff is online
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Hi, I've created PDF files for building instructions for - R2D2 / RCX - Battle Droid from legomindstorms.com html files, but I don't know if I can legally put them available for everybody on my web site ? Any ideas ? (25 years ago, 24-Dec-99, to lugnet.robotics.rcx)
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| | R2D2 and RCX : the LEGO official stuff is online
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Look at (URL) , LEGO has posted detailled build instructions and programs to do this, certainly better I did at (URL) ! Christophe (25 years ago, 24-Dec-99, to lugnet.robotics.rcx)
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| | Re: FSMs, coding techniques and other goodies
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As we say in Vermont: Ayup! Finite State Machine(s) (25 years ago, 24-Dec-99, to lugnet.robotics.rcx)
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| | Re: FSMs, coding techniques and other goodies
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OK I'm guessing, but does FSM = finite state machine ? (25 years ago, 23-Dec-99, to lugnet.robotics.rcx)
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