inexpensive low resolution shaft encoder

[systemslave]

I just completed a homebrew shaft encoder project on my Sherline lathe. It has index and phase A. Phase A has 16 divisions because I am using Linux CNC to track the pulses in software and that limits the possible resolution. What I read indicates that this is about the max resolution for LinuxCNC or Mach to keep up with unless you add hardware support.

HAL scope

encoder

threading

[hammermill]

what are you using for a encoder??

[systemslave]

I am using two photo emitter/detector pairs and a shaft encoder strip I designed in CAD and printed on my printer.