Jeff Thompson - Blog » gray code http://www.jeffreythompson.org/blog ... Fri, 30 Jul 2010 17:38:07 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 Tonewheel – Optical encoder http://www.jeffreythompson.org/blog/2010/02/28/tonewheel-optical-encoder/ http://www.jeffreythompson.org/blog/2010/02/28/tonewheel-optical-encoder/#comments Sun, 28 Feb 2010 20:31:04 +0000 Jeff Thompson http://www.jeffreythompson.org/blog/?p=448
opticalEncoder-italsensor[dot]com

An optical encoder used for motor position sensing

Similar in theory to optical tonewheels are these rotary encoder.  They’re used for position sensing in robots and high-end machinery.  An optical reader can tell the exact position of the motor shaft to a high level of precision.

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