Re: $20 shaft encoder
Originally Posted by
systemslave
From what I have read a real encoder has too much resolution for software pulse tracking. The computer can't keep up with it and loses pulses. I have an encoder on the bench as well, but set out specifically to build one with low enough resolution for LinuxCNC to track without hardware support. A real encoder on a board with hardware support is clearly superior to this solution. .
Pretty much true for Mach, 1 pulse/rev is about all it can keep up with, with a advanced system like a motion card (Galil etc) or industrial CNC, the Z axis servo is geared to the Spindle encoder, the spindle is not usually as precisely controlled, so by gearing the Z off of it, what ever the spindle is doing, the Z tracks precisely.
I believe Kflop can do it also?
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.