My Newb Plasma Table Attempted Build
Now I'm just trying to get the X-axis to move the correct distance. I'm confused, as although I selected 'inches', in the pncconf it asks for thread pitch in mm/rev (I have a 20 tooth pulley, 3mm pitch). I'm assuming that in the block titled "Leadscrew Metric Pitch ... " this is where you tell it how far it should move with my pulley and belt?
First try to configure the limits, then scaling.
dvn4life1972 wrote: Ok, I'll try that. I'm fumbling around (completely iliterate on this). I have to finish pncconf first then open the machine, correct? Not even sure how to home the machine yet lol. I only have one proximity sensor per axis (with a trigger at each end), as well as the Z float microswitch.
What microstepping are you using, what type of motion, what size pulley's, etc ?
Anyway, here is the info:
Motion...do you mean belt drive and using belt as rack? If so, yes that's it. 20T pulley, GT3 belt 3mm pitch on X and Y1/Y2, and leadscrew on Z (8mm leadscrew, 2mm pitch Tr8*8-2p)
That will make 60mm for every rotation of the motor and that is to much.
So that will be 200 steps of the motor per revolution times 8 for microstepping equals to 1600 step pulse per revolution.
Since you get 60mm of movement per revolution, the scale should be 1600/60, or how many steps are needed for 1 unit of movement, in this case 1mm.
26.666 is the scale.
Here are the docs, choose the version you are using.
I went back and entered the scaling you came up with and tested it. It was way out for some reason. I went back and tweaked the pitch numbers and now it's right on the money (2in test movements in pncconf). I absolutely don't understand how it got there, but it falls in with what you told me before...make it work!