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 Robotics / 1397
    Re: Compass/directional sensor —Don Forth
   I remember seeing that someone had used a compass and the light sensor to be able to detect weather they were moving north or south. But I don't think they could tell between the two. I might be mistaken but I think there was a picture in the (...) (26 years ago, 14-Dec-98, to lugnet.robotics)
   
        RE: Compass/directional sensor —Tim McSweeney
   You could mount a printed disk on a comapss needle and use some sort of encoding via the light sensor to determine your direction. By changing the shade from white to black you'd probably be able to get a decent angle reading. The only tricky bit is (...) (26 years ago, 14-Dec-98, to lugnet.robotics)
   
        Re: Compass/directional sensor —Peter Hesketh
     In article <002101be26fe$548a96...ms.co.nz>, Tim McSweeney <tim@ams.co.nz> writes (...) If you could find a code which only changes by one bit at any transition you would be OK. I know that the Gray Scale does this for linear measurement, but is (...) (26 years ago, 14-Dec-98, to lugnet.robotics)
    
         RE: Compass/directional sensor —Tim McSweeney
     (...) I'm sure there are gray codes that do this but from mewmory gray codes are used to encode rotation as a binary number and we only have the one light sensor. Tim (26 years ago, 14-Dec-98, to lugnet.robotics)
   
        RE: Compass/directional sensor —Mark Hanna
   I like this idea quite a bit. Instead of going starting white and progressing all 360 degrees to black, though, how about having pure white represent 0 degrees and progressing through gray to black at 180 degrees and then back to white? You would (...) (26 years ago, 14-Dec-98, to lugnet.robotics)
 

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