I assume the desire for odometry is to allow use of existing ROS 
packages for navigation or other purposes. Many require odometry as an 
input. I was working on my slightly smaller robots last year and ran 
into that requirement. Got distracted by a competition using simulation 
so didn't follow through with them although encoded motors were purchased.

A quick search found some GPS to odometry discussions so it's likely to 
be available.


-73 -
*Rud Merriam K5RUD*
/Mystic Lake Software/ <http://mysticlakesoftware.com/>






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