I've recently finished my machine. I use the 3-axis xylotex board with 3A/phase 497 oz-in steppers.
The machine jogs nicely but I have no luck for the rest.
One of the problems is that when I increase the speed I've noticed lockdowns(noise comes from stepper but no movement), when it happens I have to leave the button and push it again. Decreased the acceleration and it helped some but did not solve the problem entirely. I think it is about the pulse shape but I have no idea how to change that in EMC2.
Another thing is scaling. Well I don't know how to calculate(or what is) encoder counts, i can see that this is a counter's value when the stepper turns one round but this is not clear (the logic behind the program is clear for me but there is a lot of ambiguity in the labeling, ex: cycle period refers to period of which cycle?). I read the manual but a lot of things is not explained. So I still could not adjust the lengths correctly? If there is any help I'll be very happy.
I've wrote these in my DIY thread too but I think I can get more attention here.
I hope I can get some help...