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Need help setting probe points for UBL

totalitarian

Need help setting probe points for UBL
October 03, 2017 04:33PM

Registered: 6 years ago
Posts: 43

I have a 300 x 300 bed, my probe has offsets of

X -29
Y -51

I need around 10mm clearance around the edges of the bed to avoid my binder clips. Due to the position of the probe, I can reach the front and left edges of the bed but not the rear and right edges.

What values do I need to set for the following and how do I calculate them?

  #define UBL_MESH_INSET 30          // Mesh inset margin on print area
  #define GRID_MAX_POINTS_X 15      // Don't use more than 15 points per axis, implementation limited.
  #define GRID_MAX_POINTS_Y GRID_MAX_POINTS_X
  
  #define UBL_PROBE_PT_1_X 50       // Probing points for 3-Point leveling of the mesh
  #define UBL_PROBE_PT_1_Y 220
  #define UBL_PROBE_PT_2_X 50
  #define UBL_PROBE_PT_2_Y 90
  #define UBL_PROBE_PT_3_X 240
  #define UBL_PROBE_PT_3_Y 90

Edited 1 time(s). Last edit at 10/03/2017 05:01PM by totalitarian.

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Roxy

Re: Need help setting probe points for UBL
October 04, 2017 11:13AM

Registered: 8 years ago
Posts: 552

What are your X_PROBE_OFFSET_FROM_EXTRUDER and Y_PROBE_OFFSET_FROM_EXTRUDER numbers?

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totalitarian

Re: Need help setting probe points for UBL
October 04, 2017 12:17PM

Registered: 6 years ago
Posts: 43

Posted them above,

X -29
Y -51

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Roxy

Re: Need help setting probe points for UBL
October 04, 2017 11:24PM

Registered: 8 years ago
Posts: 552

Quote
totalitarian
Posted them above,

Oh excuse me. I'm readings quickly and trying to help people.

I didn't see them.... When I have time, I'll start at the top of the thread and start reading through everything and find them.

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totalitarian

Re: Need help setting probe points for UBL
October 05, 2017 01:14AM

Registered: 6 years ago
Posts: 43

No problem, appreciate the help.

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Roxy

Re: Need help setting probe points for UBL
October 05, 2017 10:24AM

Registered: 8 years ago
Posts: 552

If the bed's Y goes to 300mm... With a 30mm mesh inset you can use 30mm to 270mm. But with the Y_PROBE_OFFSET_FROM_EXTRUDER being -51, that limits the Y probe range to 270-51 which is 219.

If you change #define UBL_PROBE_PT_1_Y 215 the sanity checks will do better.