Quote
brendanjerwin
Alright, I'm at a bit of a lose here.
I'm trying to get the delta radius set but things just aren't making sense.
With these settings (I know, horrible things done to the smooth rod offset):
// Center-to-center distance of the holes in the diagonal push rods. #define DELTA_DIAGONAL_ROD 200.0 // mm | 200 mm as built // Horizontal offset from middle of printer to smooth rod center. #define DELTA_SMOOTH_ROD_OFFSET 155.0 // mm | 135.518 mm from CAD // Horizontal offset of the universal joints on the end effector. #define DELTA_EFFECTOR_OFFSET 22.872 // mm | 22.872 mm from CAD // Horizontal offset of the universal joints on t he carriages. #define DELTA_CARRIAGE_OFFSET 16.5 // mm | 16.5 mm from blog on first design
It goes right to the center at 0-height when I execute:
G0 F8000 X0 X0 Z0
But it goes just a hair off the side of the bed and ~6mm above the bed when I execute this:
G0 F8000 X-58 Y-34 Z0
I've been _increasing_ the smooth rod offset to try and get the heights at the center and edge on the same plane, but all it seems to be doing is pushing the thing further to the side. (It makes sense that it would too, but I guess I need to know what to adjust to get the heights on the same plane.)
I think that is because the bed is not translated into a completely flat circle in the firmware (or something like that). I remember when I had my Rostock MAX, you had to calibrate it for the theoretical bed curvature.
There is a pretty in depth guide on the SeeMeCNC website about setting up their delta printers. It should basically apply to every delta printer.