Miguel Sánchez
Variation Nigel Webb's. AB encoders, using pullups and diodes for connecting 5V (or higher voltage) encoders.
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HardwareQuadratureEncoderABZ
by 
Nigel Webb
History
Adapting Nigel Webb code for my encoders, using internal pullups and a diode for the connection of the encoder inputs. No index signal though.
2015-01-25, by misan [Sun, 25 Jan 2015 23:01:30 +0000] rev 1
Adapting Nigel Webb code for my encoders, using internal pullups and a diode for the connection of the encoder inputs. No index signal though.
Working version of Hardware Quadrature ABZ reader
2014-11-17, by Nigel945426 [Mon, 17 Nov 2014 19:17:21 +0000] rev 0
Working version of Hardware Quadrature ABZ reader