Autoleveling - Automatic correction - Distortion correction
Good evening
I am having a lot of difficulty calibrating my Delta Kossel XL
I am having a lot of difficulty calibrating my Delta Kossel XL
How can I disable all automatic correction functions?
This way I can be sure that I am getting the correct data.
I'm calibrating with: Wizarddelta.php
Comments
G33 R0
resets distortion matrix to 0.
From repetier.ino
the G30 command with the following code: escher3d.com_pages_wizards_wizarddelta.gcode
but if I probe the plane with escher3d.com_pages_wizards_wizarddelta.gcode
i have all values in the order less than 0.1mm
I assume all points were reachable from script.
In escher config tool you need to enter also the end stop offsets you defined in 1. When you omit this the result will be wrong.
The calibration method has it's limits. The 6 parameter version recalculates the offsets, horizontal distance and I think 2 angles. If anything else on printer is not perfectly calibrated this will always leave an error and only reduce the average error on the measured points. In fact, that is exactly what the tool does. It tries to find the the minimum square error of the distances by modifying the parameters selected. So if some of the diagonals have different length or parallel distances are not ideal you will keep getting moving errors from that. That is a result of the nonlinear delta behaviour and what makes it so hard to get a proper calibration. Most do not have the expensive equipment to physically calibrate it with highest precision.
V2 for avr is planned at least to try - if speed will be satisfying especially with the cpu intensive delta math - will be to prove then. But when I can not say. My complete day is always filled with support and programming all stuff that currently is urgent.
330.218 - Alpha B (330)
089.782 - Alpha C (90)
I calibrated the probe in the center of the plane.
I don't understand why the probe gives me values that are discordant from the check with a feeler gauge of the hotend nozzle.
To search for a probe detection error.
Is it possible to print the values detected by the probe at each contact of each repetition ?
#define Z_PROBE_USE_MEDIAN 0/1
Mathematically what is the calculation difference between setting 0 or 1 ?
Thanks
Z_PROBE_USE_MEDIAN 0 -> Z is average of measured values.
1 -> Values are ordered by Z and we take the middle one. Usefull if you sometimes have a "wrong" value while normally all values are correct.