 | | Re: Navigation using landmarks (Was: Re: lasers and RCX)
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(...) I meant the error due to things like refraction around solid objects, reflections, etc. Also - I didn't mean estimating and correcting for it at runtime - I just wanted an idea of what sort of magnitude of error those effects presented. (...) (...) (23 years ago, 28-Jun-02, to lugnet.robotics)
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| | Re: Navigation using landmarks (Was: Re: lasers and RCX)
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Steve (...) and (...) If it were me, I'd program a PIC chip to do everything and then deliver the results to the RCX. But I'm not a Lego purist. (...) Tradition had it that with three radio beacons and three hyperbolae you'd get three lines (...) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: Rover Programming
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(...) needs (...) uncompressing (...) Run-Length-Encoding (RLE) should work well on a blobby black-and-white map. Or you could store line N as the difference (or XOR) between line N and line (N-1). The difference would be mostly zero. Then RLE it. (...) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: Rover Programming
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<snip> (...) </snip> I hear dogs do a lot of that also... ;) -Rob (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: Rover Programming
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I've been thinking a bit about using landmarks imitating ants. You should know that ants use different types of self-produced chemicals to mark the places they have been and the paths to follow. Using this with robots would mean using a light sensor (...) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Control a microScout
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Greetings from Venezuela!!! How can I use a MicroScout as a third motor on my RCX, I own a RIS 1.5 and a DDK or Can I control the MicroScout from the IR Tower? Thanks!! Juan (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: Dead reckoning (was Re: Rover Programming)
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(...) If you haven't already, check out (URL) was able to get quite precise dead-reckoning w/ a Lego bot by programming a PID-type controller. - Gareth (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: control multiple mindstorms robots using 1 IR tower!
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(...) found it! BattleBricks at (URL) the "Remote Control" link under "Support" on the sidebar on the left. (23 years ago, 27-Jun-02, to lugnet.robotics.rcx)
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| | Re: pbForth vs RCX 1.0
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Thanks, Just to make sure, let's take an example. Let's say that I have two RCX, named A and B. What if the program in RCX B is waiting for a character on the instruction KEY and RCX A sends a character, let's say '5' (ASCII 52) with 52 EMIT ? That (...) (23 years ago, 27-Jun-02, to lugnet.robotics.rcx.pbforth)
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| | kits on sale - Toronto area
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I was recently at the Cookstown factory outlet (located at highway 400 and 89, north of Toronto) which has a LEGO outlet store. The store currently has Vision Command on sale for $52.99 Can (regular price $149.99) and Exploration Mars $49.99 Can (...) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: Rover Programming
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(...) Try this (leJos): import josx.platform.rcx.*; import josx.util.*; import josx.robotics.Navigator; public class Test { public static void main (String[] arg) throws Exception { int size = 100; Navigator nav = new RotationNavigator( ( float)8.5, (...) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: Rover Programming
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(...) While we're talking about programming rovers, could someone give me an example of a 'spiral drive around behavior' in either RCX Code (v1.5) or Gordon's Brick Programmer? Or how about code with two rotation sensors attached to the (...) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Dead reckoning (was Re: Rover Programming)
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(...) A systematic search pattern is one solution. Not being too anal about it is another - random walking the domain will eventually explore the whole of it, although increasingly inefficiently as time goes on. (...) It's killing me. My first (...) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: pbForth vs RCX 1.0
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"Mario Beaulieu" <mariobeaulieu@videotron.ca> writes... (...) Yes. I run pbForth on RCX 1.0, 1.5 and 2.0. No differences. (...) No, to my knowledge. In pbForth the IR port is entirely devoted to communication between the brick and the terminal. (...) (23 years ago, 27-Jun-02, to lugnet.robotics.rcx.pbforth)
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| | Light Sensor Problem
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Hello, I have been trying out the demo programs in legOS. all demos worked fine except linetrack.c. When I download linetrack.lx in the RCX (RCX2.0) and put it on the test pad that comes with mind storm the bot goes srtaight. It does not recognize (...) (23 years ago, 27-Jun-02, to lugnet.robotics.rcx.legos)
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| | Re: Rover Programming
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(...) So how do you remember what you've already explored? I think you *need* three states if you want your robot to curiously explore it's environment without continually re-exploring areas that it's already visited but which proved to be empty. If (...) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: Rover Programming
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(...) It's the opposite of impoling. ---...--- Steve Baker ---...--- Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com> URLs : (8 URLs) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Re: Navigation using landmarks (Was: Re: lasers and RCX)
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(...) So with the speed of sound being something like 300 meters/second, sounds spaced 100mSec apart would travel about 30 meters before the next sound started. That's a pretty reasonable distance. If you could measure the arrival time to within (...) (23 years ago, 27-Jun-02, to lugnet.robotics)
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| | Any news on USB support for linux?
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Hi there, Is there any news on the development of support for the USB IR tower under linux? I found a HOWTO on the net by Ryan Simmons which claims to be able to get the tower working using a patch written by Bret Thaeler. (URL) anyone been able to (...) (23 years ago, 26-Jun-02, to lugnet.robotics.rcx.legos)
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| | pbForth vs RCX 1.0
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Hi, Is pbForth fully compatible with RCX 1.0? Can RCX 2.0 communicate with RCX 1.0 in pbForth (using IR ports)? Thanks Mario (23 years ago, 26-Jun-02, to lugnet.robotics.rcx.pbforth)
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