 | | Re: Struggling with encoder wheel —Andy Gombos
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| | | (...) You could make a big wheel made of lego plates, and put smooth ones on top for 'colors'. Then you could use a touch sensor, and use the difference between the low spots and the high spots as 1 location. Do you really need to know the direction (...) (23 years ago, 12-Apr-01, to lugnet.robotics)
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| | | | | Re: Struggling with encoder wheel —Chris Osborn
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| | | | (...) I thought about something like that, but using 2 wheels and 2 touch sensors, not just one, and using my 2 bit encoding system like on the light sensor wheel. But I'm not sure how to build small round things out of Lego that have 36 divisions (...) (23 years ago, 12-Apr-01, to lugnet.robotics)
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| | | | | | Re: Struggling with encoder wheel —Simon Bogaert
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| | | | | Hello, (...) What is Lego made out of? ==> ABS plastic What can you buy in sheets with the same thickness as Lego? ==> ABS plastic So what I would do if I were you is go to a modelbuilder's supplier and ask for a sheet of ABS of 1.5 (?) mm thick. (...) (23 years ago, 12-Apr-01, to lugnet.robotics)
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| | | | | | Re: Struggling with encoder wheel —Andy Gombos
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| | | | (...) You could build a rotation sensor found on Michael Gaspari's site, using a magnetic strip. It is supposed to give 40 or so counts per revolution. Andy (...) -- See my Visual Interface for leJOS at (URL) (23 years ago, 13-Apr-01, to lugnet.robotics)
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| | | | | | Re: Struggling with encoder wheel —Chris Osborn
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| | | | (...) Yah, but if I'm gonna build my own sensors, there's a lot I could do. I'm sort of a purist. I'm trying to stick with the stock sensors so that most people can build a copy of my system. Printing out something on a printer and gluing it to (...) (23 years ago, 12-Apr-01, to lugnet.robotics)
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| | | | | | Re: Struggling with encoder wheel —Stef Mientki
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| | | | hi Chris, (...) That's in fact a good principle. Isn't it possible to improve the dynamic range of the light-sensor by taping the red LED, I read that somewhere but I don't know where. Why not use a continuous grayscale, with pure with and black (...) (23 years ago, 12-Apr-01, to lugnet.robotics)
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| | | | | | Re: Struggling with encoder wheel —Philippe Hurbain
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| | | | As I am not so purist, I think that an angle sensor based on a small potentiometer (There's a description on Michael Gaspari's site) would be the simplest solution... But your absolute encoder is a challenge in itself! What about using two (...) (23 years ago, 13-Apr-01, to lugnet.robotics)
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