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 | | Re: sys_timer
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| (...) Yes. It is updated from an interrupt routine that fires every 1 ms (IIRC). However.... (...) wait_event is only accurate to 20ms or so, depending on what your other tasks do. So your timing is very accurate, but you're not timing what you (...) (22 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
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| | sys_timer
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| I recently adopted legOS as my development environment and I have to say I tremendously impressed. Thanks to everyone who has worked so hard on it. It is really a first class, grade A product. Is sys_timer accurate to within 1 ms? unsigned long (...) (22 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
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| | Re: Lego IR Remote - What is max send rate?
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| Stephen - I've recently taken a couple of patch postings to legos.sourceforge.net by Ross Crawford and Zhengrong Zang and have come up with a hybrd solution (on 0.2.6) to implement the remote control. I am quite happy with the results. The original (...) (22 years ago, 29-Apr-02, to lugnet.robotics.rcx.legos)
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| | Interactive communication with the RCX
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| I have recently discussed with Kekoa an interesting issue that apparently received scarce attention in the past. I'm trying to have interactive communication between the computer and the RCX through IR connected to an USB port: sendind commands from (...) (22 years ago, 24-Apr-02, to lugnet.robotics.rcx)
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| | SUMO at WAMALUG Meeting
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| At the WAMALUG meeting on April 14, 2002, a couple of people brought sumo robots. It was a lot of fun. See (URL) for some pictures from the meeting (thanks to Abe Friedman for taking and posting the pictures). Brian Carpenter posted the rules we (...) (22 years ago, 16-Apr-02, to lugnet.robotics.events, lugnet.org.us.wamalug)
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| | UK Television Appearance
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| Did any of the UK Lugnuts see the piece on LEGO Mindstorms on ITV's Cybernet last night? It was on at around 2.30am and the spot on LEGO was very interesting. It featured an event at the Rainforest Cafe in London's Picadilly Circus and stars of the (...) (22 years ago, 15-Apr-02, to lugnet.robotics)
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| | RCX Firmware Speed
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| This is a follow up to many of the recent posts on the speed of Lego's RCX byte code interpreter. It's a long post but the salient items are in the first few paragraphs. The interpreter is very slow because of all the overhead required to execute a (...) (22 years ago, 10-Apr-02, to lugnet.robotics) !
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| | Competition III Web Cast
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| The Robotics Competition at Ivy Tech State College in Evansville Indiana is going to be web cast on Friday 5 April from 12:30 to 3:00pm Central Standard Time. To view the "Search and Destroy" competition, point your browser to: (URL) general (...) (23 years ago, 4-Apr-02, to lugnet.loc.us.in.eva, lugnet.robotics)
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| | Re: LeJos threads / sleep() takes too long
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| The priority mechanism used in lejos is the same as that specified in the Real Time Specification for Java (RTSJ): Threads of a higher priority will absolutely block threads of a lower priority as long as they remain runnable. The sensor listener (...) (23 years ago, 1-Apr-02, to lugnet.robotics.rcx.java)
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| | Re: RFC: smaller task scheduler
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| "Stephen M Moraco" <stephen_moraco@agilent.com> wrote in message news:GtKIM4.Gws@lugnet.com... (...) <snip> (...) Sounds good. Now, who would like to provide a second opinion? BTW, as far as intended purpose of the task scheduler... I can see how (...) (23 years ago, 26-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: New Book - Core Lego Mindstorms
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| I assume with the offfical 1.4 release? I have had several problems with the offical release including stability problems, incompatible code (some wierd 1.2 stuff), slow performance, and hanging event threads (they never return from calling the (...) (23 years ago, 16-Mar-02, to lugnet.robotics)
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| | Re: Stair Climber 4x4
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| We (LEGO Robotics Group of Ann Arbor) recently had our Stair Climbing event here in Ann Arbor. The 3 bots that competed all had very similar designs to the item you link to. We competed on a 5 step stair case that had a total rise and total run of (...) (23 years ago, 14-Mar-02, to lugnet.robotics)
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