 | | "Local Positioning System" for lego-vehicles with mice
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Hello NG, i try to develop something like a local position system with a optical RF mouse (or other mouse-devices). If someone want to join or help for this little project please mail me. A very first result you can see at (URL) (23 years ago, 1-Feb-02, to lugnet.robotics.rcx.legos)
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| | Integer-based arctangent2 function for anyone interested
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After scouring the internet for several days and even utilizing Jack Crenshaw's wonderful book "Math Toolkit for Real-time Programming", I was unable to find a good, general iatan2(y,x) function. Note that this is the atan function that takes as (...) (23 years ago, 31-Jan-02, to lugnet.robotics.rcx.legos)
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| | Errors compiling egcs
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Hi, I've just downloaded and attempted to install the binutils, egcs, and LegOs on my computer as per the instructions at (URL) only difference between these instructions and what I have done is the path to where the software is to be installed. (...) (23 years ago, 31-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: which Linux distro?
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(...) Good Idea ! I had no problem using legOS when using a RedHat 7.1, Mandrake8 or a Conectiva 6.0, As far as I remember, there is a Debian package available for legOS. So... no matter which distribution you'll use, it will be far better than (...) (23 years ago, 31-Jan-02, to lugnet.robotics.rcx.legos)
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| | which Linux distro?
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Hi, I am thinking of moving over to Linux, partly for legOS reasons (Lnp easier to set up for a start), but partly for other reasons (free software, morality etc, ie the usual waffle.) I am considering Redhat 7.2, Suse 7.3 personal or Suse 7.3 (...) (23 years ago, 31-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: Incorrect result
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(...) Yes, this is what happens when one is used to just making everything long and not considering overflows. Even worse was that I was doing the math on the computer's calculator, but not looking at the intermediate result, just typing in the (...) (23 years ago, 30-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: Incorrect result
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(...) 256 * 128 = 32768, one higher as the biggest positive integer value. The cast to long would help, but your cast is too late. I have not tested, but I think rc += ( (long)b->magnitude * (long)TA_costable[...] ) >> 7; will help. Try output in (...) (23 years ago, 30-Jan-02, to lugnet.robotics.rcx.legos)
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| | RE: Incorrect result
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<snipped code> (...) Robert, this is a classic problem with ranges of singed numbers in C rx = (long)(a->magnitude * TA_costable[a->direction]) >> 7; I don't have an RCX in frot of me, but I think you need to cast a->magnitude to long before the (...) (23 years ago, 30-Jan-02, to lugnet.robotics.rcx.legos)
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| | Incorrect result
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This problem, unlike the other, is definitely not a result of my eyes/brain being tired or something. I thoroughly displayed every value before and after evaluation and the result is ***WRONG***. Here is the code and the values: typedef struct { int (...) (23 years ago, 30-Jan-02, to lugnet.robotics.rcx.legos)
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| | RE: true tcp/ip on the RCX
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Hi :) Just out of curiosity, check this thread from Jan/2000: (URL) mc. (...) (23 years ago, 30-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: true tcp/ip on the RCX
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(...) <snip> (...) <snip> Yeah, I've got a server farm of 3 million RCXs. Each hosts errrrr... 1 page. ;-) Great job Olaf! Steve Martin IndyLUG (23 years ago, 30-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: true tcp/ip on the RCX
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"Olaf" <christ_o@gmx.de> schrieb im Newsbeitrag news:Gqo0BH.E9t@lugnet.com... (...) calls (...) <---snip----> Hi Olaf, i think it´s the wrong way to blow up the legOS kernel with a ip-stack, because you lost valuable RCX memory to legOS (...) (23 years ago, 30-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: true tcp/ip on the RCX
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<Mr Burn's> Excellent!!! I've seen some neat ideas but, this one takes the cake hands down.... Especially that it also appeared on www.slashdot.org makes it even more impressive.. Bravo to you.. Can't wait to see the webpage.. Wayne (...) (23 years ago, 30-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: true tcp/ip on the RCX
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I will be axiously awaiting the web page too! This has many fun/useless possibilities! Email it to me or post it on this thread if you can. thanks nate www.nullgel.com (23 years ago, 29-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: true tcp/ip on the RCX
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plz email me the url when u get it running thx -p (...) (23 years ago, 29-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: Strange behavior
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In lugnet.robotics.rcx.legos, Robert Templeton writes: Nothing like talking to yourself :), but I did finally find the problem and it is in the code. It isn't always what's there, but what's not. Here's the offending section: (...) Instead of (...) (23 years ago, 29-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: LNP Routing daemon with tcp/ip for RCX/legOS, Cybermaster/NQC
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Hello NG, if you are interessted : there is a newer version of lnpoi available. there was a bug in the cybermaster-driver. refer to (URL) (23 years ago, 29-Jan-02, to lugnet.robotics.rcx.legos)
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| | true tcp/ip on the RCX
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I ve got the very first and only tcp/ip enabled RCX in my room, cool, eh ? I will make a webpage at the end of the week to make the very first (rudimentary, but working) version available to the public. Right now, the tcp/ip stack is compiled into (...) (23 years ago, 28-Jan-02, to lugnet.robotics.rcx.legos) !
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| | Strange behavior
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This code was working last night, but I removed some superfluous functions copied with the set (such as moveBackward() and pivotRight()) since they were not being used. All of a sudden, the robot turns okay, but never moves forward. It just sits (...) (23 years ago, 28-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: newbie
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Hi Paula, While NQC is a nice place to start, you might want to consider LEJOS which, like legOS has its own firmware but it uses Java instead of C. It can do much more than NQC, and is quite bug free. Find out more at (URL) luck. (...) (23 years ago, 25-Jan-02, to lugnet.robotics.rcx.legos)
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