Quote:
Originally Posted by squirrel
In most cases, yes. However, this is a special case, in that the wheel does not need to support any of the robot's weight, it is being used only for instrumentation. If the speed sensing wheel is attached to a hinged arm, and carries only it's own weight, then it should not affect robot performance noticeably.
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Fat lot of good it will do as an encoder if it isn't pushing on the floor with significant force. If it slips, it won't be sensing anything meaningful.