 | | 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 (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
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| | Re: FetchBot instructions now available
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I'd like to see build instructions for your Calipers. I can just about figure it out from the pictures, but I can't figure out the depth gauge. (...) (23 years ago, 3-May-02, to lugnet.robotics)
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| | Re: Current Makefile logic fails for nonNT Windows OS
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Taking a second look at this and noticing some past post about this issue with WinXP ((URL) a much cleaner code might look like the following # # WindowsNT/Cygnwin, test against several values: # ifneq (,$(findstring $(OSTYPE),cygwin32 cygwin (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
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| | RE: Co-operative Multi tasking in pbforth 2.1
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Phil, I have some hooks in the current version of pbForth that you can use to implement cooperative multi-tasking. Have you read the article on implementing a background monitor to check for button presses? It's at: (URL) I was going to write (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.pbforth)
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| | Current Makefile logic fails for nonNT Windows OS
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I am compiling under windows 98 using cygwin version 1.3.10. In Makefile.common (/legOS-0.2.6,/legOS....2.6/util) the logic to determine whether the OS is a windows system fails due to the fact that uname returns CYGWIN_98-4.10. I submitted a bug (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
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| | Re: Lego sensor or Radar ?
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I would add another question to Steve's valuable list. Do you really want to do tracking? With one or two degrees of freedom, ie; azimuth or azimuth and elevation. IF that's what you're trying to do, then your sonar/radar sensor is going to have to (...) (23 years ago, 3-May-02, to lugnet.robotics)
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| | Accurate msleep and timeslicing - was Re: sys_timer
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"Michael Obenland" <obenland@t-online.de> wrote in message news:GvJ5vD.7MC@lugnet.com... <snip> (...) switch. (...) I made some modifications to the tm_sleep_wakeup that allows high priority tasks to wake up at exactly the time specified for msleep (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
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| | Re: sys_timer
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(...) Yes. (...) That is right. (...) It does, actually. The timer itself counts the millisec. But if you do a wait_event() call, your running program gives up its time slice, the OS waits for the event and then continues your task with the next (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
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| | Programming LEGO Mindstorms with Java
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Just a quick post to let anyone who's interested in this book and hasn't got it yet that my company has this on offer at 25% off RRP for the next 7 days. Probably not much use to anyone outside Europe due to shipping charges, but I thought I'd let (...) (23 years ago, 3-May-02, to lugnet.books, lugnet.robotics)
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| | Co-operative Multi tasking in pbforth 2.1
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I am have been programming the brick in nqc but have started to find this a little restrictive. I have just started using pbFORTH. Would anyone be able to help me with a sample script to impliment Multi-Tasking. I am using this to set up an "infra (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.pbforth)
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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 (...) (23 years ago, 3-May-02, to lugnet.robotics.rcx.legos)
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| | Re: Lego sensor or Radar ?
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(...) First some questions that will make the replies from the list more relevent: * How fast does the target move? * How big is the target? * How far away is the target - typically? * Can you attach things like lights or infra-red LED's to the (...) (23 years ago, 4-May-02, to lugnet.robotics)
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| | Re: IR tower for ordinary infrared communication
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(...) I don't think this will work. There are two kinds of IR comms out there, one kind is called 'IRda' and is used for computer-to-computer types of communications and the other kind is the sort that TV remotes use. The Lego adaptor is of the (...) (23 years ago, 4-May-02, to lugnet.robotics)
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| | RE: Spirit.OCX and VC++
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-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: multipart/alternative; boundary="----_=_Nex....F13B3C56" Content-Length: 6368 (23 years ago, 3-May-02, to lugnet.robotics)
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| | RE: Spirit.OCX and VC++
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-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: multipart/alternative; boundary="----_=_Nex....E2010E76" Content-Length: 2793 (23 years ago, 3-May-02, to lugnet.robotics)
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| | FetchBot instructions now available
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Hi folks, First, thank-you! I got many great responses to my earlier post requesting help with web hosting, including offers of web space. I've just moved my site to ozBricks.com, they offer free hosting for Lego-related sites. They are also located (...) (23 years ago, 3-May-02, to lugnet.robotics)
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| | Tangental motion and related topics
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I'm trying to recreate, in 3d software, a steam locomotive like robot that I've built in Mindstorms. Could anyone point me at some materials that would cover the MATH to model this behavior? I'm having trouble expressing the motion of the (...) (23 years ago, 3-May-02, to lugnet.robotics)
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| | IR tower for ordinary infrared communication
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Can an old serial IR tower work in Windows ME for ordinary infrared communication, e.g., to another computer with an infrared port? Nothing to do with an RCX or Mindstorms. Just too cheap to buy an infrared communication adapter. My laptop has an IR (...) (23 years ago, 2-May-02, to lugnet.robotics)
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| | external power source with expansion board
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Hi, I know this has been asked before, but I was unable to find a deffinitive answer. I cut the trace on my handy board in order to externally power some larger dc motors with two 6 volt gel cell packs wired in series for 12 volts. Unfortunately, (...) (23 years ago, 2-May-02, to lugnet.robotics.handyboard)
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| | Re: Color sensor and brick mixer MOC
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(...) I did this modification, very easy (simply connect R4 to pin 1 of IC10 instead of pin 10). The cycle becomes (starting at dummy position) : ambient measure > red > green > blue > dummy. When you substract ambient value to other components, you (...) (23 years ago, 2-May-02, to lugnet.robotics)
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