Subject:
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tracking robot position
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 11 Nov 1999 09:33:50 GMT
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Viewed:
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870 times
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Hi all!
I had an idea last night, and I think something good might come out of it, with
so many smart people around! *s*
I need a way to track the position of my robot, and I realized that attaching
the PC mouse to it might do the trick!
Without hardware intervention, the only way is to have a cord going to the PC
thus limiting the range and the elegance(!?) of the solution - maybe it is
possible to just use the mouse sensors and wheels as "home-made" rotation
sensors and plug them directly to the RCX?
A disadvantage would be that 2 input ports will be used, but if an extension
plate is used on the 3rd to enable 4 extra touch sensors, it might not be such
a big problem after all...
/Vlad
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Message has 4 Replies:
 | | Re: tracking robot position
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| Using two rotation sensors should do the job nicely, at a higher cost however. But you can connect them directly to the RCX. About that : did anyone build a reliable (and cheaper) rotation sensor replacement? Why not using a lego wheel with holes (...) (25 years ago, 11-Nov-99, to lugnet.robotics)
| | | RE: tracking robot position
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| This is an interesting idea, but I think you will have a problem common to most dead-reckoning navigation solutions and that is that wheel slip, mouse ball slip, and the differential slip between the two (i.e., if the robot wheel slips, the mouse (...) (25 years ago, 11-Nov-99, to lugnet.robotics)
| | | Re: tracking robot position
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| (...) with (...) attaching (...) PC (...) Hi Vlad, the main problem I see in using a mouse for dead reckoning is that you cannot register the rotation on its own vertical axis. So this solution is, by principle, not working. If you're not convinced, (...) (25 years ago, 11-Nov-99, to lugnet.robotics)
| | | Re: tracking robot position
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| Vlad Dumitrescu wrote in message ... (...) with (...) attaching (...) PC (...) Use a cordless mouse. They use radio and have a range of several metres. (...) It's time Lego came up with a GPS sensor for the RCX ;-) (...) extension (...) such (...) (25 years ago, 11-Nov-99, to lugnet.robotics)
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