Distance problems


#1

Hi all,
I’m currently using mBlock to program a XY plotter for a very specific task where the pen must move 1mm in each direction in sort of a spiral motion. I attached photos of what I am trying to get the pen to do. The issue is that when I set the distance for the forward and backward motion on the XY plotter (controlled by step motor 2 and port 2 on ME Orion) the plotter just makes a noise. When I try the same with step motor 1 controlled by port 1, the plotter moves properly; both motors are set at the same speed of 100, so I don’t see why one should work when the other doesn’t. Any help is greatly appreciated!