Holy smokes! Working motion control on my laser with the Smoothieboard! Click through, there is a video.
I got the motion control up and running! Right now, the two motors on the Y axis are running as two separate axis, and I just use coordinated multi axis moves to move the Y. This limits my Y speed to about half the X speed as the controller cannot keep up and jams the axis. I’m working on a more involved programmatic fix that will allow both axes to hit full speed.