I'm running Marlin 1.1.0 RC7 on my newly minted D-Bot Core XY and I have some issues with the steps/mm settings. I'm using the DRV8825 drivers with the MS3 jumper set which essentially means they are configured for 1/16 micro step. Also I'm using the standard GT2 belts for the X and Y axis and a 20-tooth pulley on the motors. The Z-axis uses a 2mm pitch acme leadscrew. With these settings I get the X and Y steps/mm as 80 and the Z steps/mm as 1600. However, if I move the axes by 4mm, I get 16mm of travel. What am I missing?
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