Well, I downloaded AndyCart's firmware again - made sure I got it right this time and now it's a different machine. The axis now move in cartesian coordinates. All of Andy's numbers are wrong for my machine but I can fix that. It's amazing how differnet the LCD panel is - even the beep sound is differnent; and there's a power off function that didn't exist before.
Anyway I'll start calibrating again and see how it goes. I've spend several hours trying to get the bed level before. I can get it withing 0.001" at all three columns and in the center. Afterwords, 50mm linear movement in +X, -X and +Y are withing 0.002" or so, but when I move to 50mm -Y, the bed is off 0.010 or more. Really frustrating. Oh well - try again. At least now the LCD moves appear as they should be so my result may be better. Thanks Andy.
--Colin--
Anyway I'll start calibrating again and see how it goes. I've spend several hours trying to get the bed level before. I can get it withing 0.001" at all three columns and in the center. Afterwords, 50mm linear movement in +X, -X and +Y are withing 0.002" or so, but when I move to 50mm -Y, the bed is off 0.010 or more. Really frustrating. Oh well - try again. At least now the LCD moves appear as they should be so my result may be better. Thanks Andy.
--Colin--