What have you guys used for stepper motor position feedback? I'm aware of shaft encoders, hall effect sensors, magnet and reed switches... but haven't used any to actually get feedback/control.
Code/Links appreciated (especially Energia sketches)!
It's for use with a little open source 1000PSI hydraulic pump that I'm iterating. The stepper feedback is for accurate hydraulic flow measurement, which will help us zero in on hydraulic positioning (not an easy thing!)
curious/interested (blogpost -no BS, no commercials):
http://www.arduinoforgoodnotevil.blogspot.ca/2013/07/arduino-1000-pounds-per-square-inch.html
THANKS!