Subject:
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Re: RCX+PC=Rubik's Cube Solver
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 19 Apr 2001 06:04:02 GMT
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Viewed:
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2032 times
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In lugnet.robotics, Jonathan Brown writes:
> No offence taken. I think it's almost certainly doable completely onboard the
> RCX, and I considered this as an option. The reasons I didn't do this are as
> follows:
>
> 1. Couldn't think of a another good way of reading the cube facelets.
>
> Color discrimination of the LEGO light sensor is too poor to read the face
> colors accurately. Of course, one could retrofit the cube faces with
> gray-scale patches or other aids to proper discrimination, but I was aiming at
> a general solution to all 3^3 cubes, rather than a solution only for specially
> retrofitted cubes.
>
> One other way would be to use homebrew CdS sensors -- that looks doable from my
> early experiments on sensor response to the cube patches (indeed, it may well
I have been sort of heading that way for the last few weeks. Mainly due to
the cost, and the fact that I usually use the Light Sensor with the IR as
sonar, and I was thinking that I might get better distance with a passive
(CdS) sensor.
My latest robot is very wide and very short ( 5" x 20"), so I want to
implement two IR Sonars, one each side so it can tell which way to turn when
approaching a wall.
Regards
Gordon
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Message is in Reply To:
 | | Re: RCX+PC=Rubik's Cube Solver
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| Gordon -- (...) No offence taken. I think it's almost certainly doable completely onboard the RCX, and I considered this as an option. The reasons I didn't do this are as follows: 1. Couldn't think of a another good way of reading the cube facelets. (...) (25 years ago, 19-Apr-01, to lugnet.robotics)
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