Quote Originally Posted by Fastest1 View Post
Did you delete your existing linearity.dat file?

Kinda? I moved it to the desktop.

I get my half speed close, about 50 RPM off. but anywhere in between is off like 200 RPM and lower that half drops off like crazy!

I think its just the treadmill motor I'm using.

If I got the rpm sensor from vistacnc, could I get the spindle calibrator program to figure out the right volts for the S command?

Other wise I'll just start typing in S commands until I get the desired speed and make a cheat sheet for programming.

Andrew