Quadrature encoders for motor control

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electricgeek

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How do i make a quadrature encoder? I want to make two motors rotate at the same speed by using quad encoders. And can i, without anything else, make a robot move on a circle track using only quad encoders?
 

If the motor moves only one direction, or you know it's direction and don't need to track the position across reversals, a single channel incremental encoder would be sufficient. Otherwise a code wheel and two opto-interrupters mounted with an offset of one quarter of the codewheel resolution make a quadrature encoder.
 


My motor has to move in one direction only.

**broken link removed**

Will I be able to use this to achieve my task? Will it go on the back shaft of my motors?

What is the angle of throw? And how do i determine which one i need?

@Sudarsan_EDA: Does the PIC18f4520 have MFM?
 
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