I had the same problem. It solved mine Thank you very muchby Roelof - Developers
So I just did a grid auto-bed leveling test. Now I got the following measurements after the leveling: Z1 = -1.5 Z2 = -1.5 Z3 = -1.5 That sounds perfect, the bed is now fully corrected. But my question remains: Why is the 3 point leveling not working?by Roelof - Firmware - mainstream and related support
So I did a few new tests today, which might give a hint where to look. First the 3 points defined in the Marlin code: #else // not AUTO_BED_LEVELING_GRID // with no grid, just probe 3 arbitrary points. A simple cross-product // is used to esimate the plane of the print bed #define ABL_PROBE_PT_1_X 15 #define ABL_PROBE_PT_1_Y 150 #define ABL_PROBE_PT_2_X 15 #by Roelof - Firmware - mainstream and related support
Sorry Olaf my text was not clear enough. The mentioned number is my trigger height. Is there a limitation in the Marlin code on trigger height? (should it be for instance always less than 2 mm?)by Roelof - Firmware - mainstream and related support
Can you explain a bit more what you mean? The sensor is 5 mm above my heat-bed (and has a capture range of 10 mm). So in the Marlin code I put: #define Z_PROBE_OFFSET_FROM_EXTRUDER -4.8 What should I reduce? Roelofby Roelof - Firmware - mainstream and related support
I just joined the forum and could not find the problems I'm facing. Since a few days I have installed a capacitive sensor for the auto-bed leveling and enabled the code in Marlin. My 3D printer is based on Prusa I3. It seems to work, except: 1. When I do a 3 point calibration of which all 3 points have the same Y value (so I could figure out if the calculations in one plane where done correctlyby Roelof - Firmware - mainstream and related support