 | | Re: Dead reckoning (was Re: Rover Programming)
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(...) Well, I did the code changes to do acceleration and deceleration yesterday and it's amazingly successful. I'm not yet quite as good as the Seattle robot, but I suspect that's at least partly because mine has a narrower track. I now believe (...) (23 years ago, 28-Jun-02, to lugnet.robotics)
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| | Re: Dead reckoning (was Re: Rover Programming)
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(...) WOW! That's impressive - but I can't help but get the impression that it's heavily optimised to going around that particular track. Getting that good positioning on the straight sections is impressive - but I wonder how it would have fared in (...) (23 years ago, 28-Jun-02, to lugnet.robotics)
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| | Re: Dead reckoning (was Re: Rover Programming)
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(...) Yes - managing accelleration is a 'must'...both in speeding up and slowing down - and easing into turns. An abrupt change of speed will generally result in wheel slip. (...) It was good in a straight line - but *hopeless* in a turn because the (...) (23 years ago, 28-Jun-02, to lugnet.robotics)
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| | Re: Rover Programming
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(...) Yes - and it's very fast to implement. Better still, you can use one of several rectangle encoding tricks that are out there (kind of like two-dimensional run-length encoding). Those are typically able to compress at the square of the ratio of (...) (23 years ago, 28-Jun-02, to lugnet.robotics)
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| | Re: Control a microScout
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(...) Well, the RIS 2.0 tower can drive the microscout - but not the RIS 1.5 tower. The microscout uses something called 'VLL' (Visible Light Link) - which is kinda like the IR commands that you send to your RCX - but they are sent in the visible (...) (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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(...) 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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