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 Robotics / Handy Board / 5693
5692  |  5694
Subject: 
Wheel encoders
Newsgroups: 
lugnet.robotics.handyboard
Date: 
Mon, 1 Mar 1999 13:55:15 GMT
Original-From: 
Will Bain <willbain@STOPSPAMMERScs.umt.edu>
Viewed: 
1180 times
  
Nick Taylor wrote:
Thanks for posting the pics ... great casters!  Are you
using the pulleys with near the driven wheels to sense
wheel rotation?

Yes, the pulley wheels near the drive wheels were drilled to accomodate
0.1" dia. disk magnets, available at the local hobby shop.  The magnets
activate the Hall effect magnetic sensors that are tucked away into the
chassis (not easily seen in the photos).

These encoders are simple to use and in the current configuration
provide one count for each two centimeters or so of travel, which is
sufficient to keep the robot tracking straight across the floor.  For
maze navigating & dead reckoning I'll probably need to gear up the
encoders by a factor of two or three.

-- Will
                                          , ,
        __@_/             \_@__           |/
          |                /__,           o             @_/
          )\              )              ( \            (\/\\,
~~~~~~~~~ ' ` ~~~~~~~~~~~ ` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wendy Parson,                                           The big thieves
Will Bain,                                        hang the little ones.
& Tatoosh                                               --Czech proverb



Message is in Reply To:
  Re: Working with Legos
 
Thanks for posting the pics ... great casters! Are you using the pulleys with near the driven wheels to sense wheel rotation? - - - Nick - - - Will Bain wrote: <snip> (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)

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