Renishaw / Mbed 2 deprecated QuadratureEncoder_X1

Interface the RenBed with a simple optical linear encoder, using X1 encoding.

Dependencies:   SevenSegmentDisplay mbed

This is an example of a copper strip-board design for an optical linear encoder (IRED), and how it is wired up to the Renbed on a breadboard:

/media/uploads/elijahorr/encoderwiring.png

The trimmer potentiometer is used to vary the current through the IRED LEDs, in order to balance out the two output signals.

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