ON 20030727@10:00:46 PM at page:
http://massmind.org/techref/io/sensor/pos/enc/quadrature.htm
DAV-MP-E62a David A Cary Says
http://www.portlandrobotics.org/robots/servo_encoder/
&quot;Quadrature Encoder Inside an R/C Servo&quot; by Giuseppe Marullo<BR>
has<BR>
detailed photographs, schematics, and step-by-step instructions: