 | | Re: Motorized landing gear question
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(...) (These are identical to Mindstorms motors - right? Certainly the motors *I* picked up from Znaps sets are indistinguishable from Mindstorms motors ...I don't think they ever shipped a different one with Znaps.) (...) Well, the worm gear should (...) (23 years ago, 5-Feb-02, to lugnet.robotics)
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| | Re: Motorized landing gear question
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(...) I'd suggest it's not necessary for the landing gear to lift the craft - just to hold it up. If it's only operated while there's no weight on the craft, it becomes much easier, you only need some kind of locking mechanism so the motor isn't (...) (23 years ago, 5-Feb-02, to lugnet.technic, lugnet.robotics, lugnet.space, lugnet.znap)
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| | Re: multiplexor and legOS
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(...) Not bad. But as you say, still vulnerable to the task switching problem. (...) Instead of resorting to that, maybe there is a way to freeze task switching during critical operations. When I owned and programmed the AmigaOS (don't laugh :), (...) (23 years ago, 5-Feb-02, to lugnet.robotics.rcx.legos)
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| | Motorized landing gear question
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I've been pondering using one of the Znap motors to power a landing gear mechanism strong enough to at least hold, if not lift a decent sized space craft (including the motor and battery box- if possible) Any ideas? I was thinking worm gear and some (...) (23 years ago, 5-Feb-02, to lugnet.technic, lugnet.robotics, lugnet.space, lugnet.znap)
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| | Re: multiplexor and legOS
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#include <sys/time.h> void systime_set_timeslice (unsigned char slice); include/sys/time.h:43-45: #ifdef CONF_TM #define TM_DEFAULT_SLICE 20 file://!< default multitasking timeslice #endif hope that helps, Albert "Michael J Ash" (...) (23 years ago, 4-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: multiplexor and legOS
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(...) I agree about the cause for the msleep granularity, I'd seen the same stuff in tm and assumed that would cause the problem. Sorry my last note was a little unclear, I tried msleep and delay but am now using my own function which seems to (...) (23 years ago, 4-Feb-02, to lugnet.robotics.rcx.legos)
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| | Re: Secondary Education Robotics
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(...) Hi, have a look at (URL) is more than two years of work with secundary students. Claude Baumann (23 years ago, 4-Feb-02, to lugnet.robotics.edu)
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| | Re: multiplexor and legOS
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(...) I don't know about this 20ms granularity and how delay() is going to be any better. Here's the code for each function: //! delay execution allowing other tasks to run. /*! \param msec sleep duration in milliseconds \return number of (...) (23 years ago, 4-Feb-02, to lugnet.robotics.rcx.legos)
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| | Secondary Education Robotics
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Hi, I'm part of a university group trying to compile a list of ways that robotics are being used in high school classrooms. If you are a person involved with the use of robotics in high school science, math, and technology courses, and are (...) (23 years ago, 4-Feb-02, to lugnet.robotics.edu)
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| | Re: multiplexor and legOS
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(...) Thanks, I'd suspected that msleep might not be very accurate but never considered that it's true granularity could be so large. I did a quick test with my current configuration and when I asked msleep to sleep for 12ms it slept for 20. This (...) (23 years ago, 4-Feb-02, to lugnet.robotics.rcx.legos)
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