Auto_Bed_Leveling: Z-Probe Repeatability code

[Roxy]

Hi Roxy sorry I havent got back to you for a couple of days but work has been crazy and I needed a rest.

No Problem!!!

I'm just about to try a print with pronterface and your code and thought i'd just add the M48 code first. When I added in the code it wouldnt compile saying #endif without #if at the very end of your code, I tried just removing the #endif line and it compiled and seems to work but don't really know if i've done something stupid. Here are my first results just sending an M48 command

It looks from the printout later that everything is good... But if you attach your current Merlin_Main.cpp I'll do a quick DIFF and make sure that #endif was safe to take out.

>>>M48
SENDING:M48
M48 Z-Probe Repeatability test. Version 1.85
Mean: -0.167070
Standard Deviation: 0.002544
echo:endstops hit: Z:-0.17

I will have a go at printing something now and see how it goes but when I ran G29 last time this was my result
Bed Level Correction Matrix:
0.999998 0.000000 0.002131
0.000000 0.999999 0.001302
-0.002131 -0.001302 0.999997
isnt the last line supposed to be positive numbers? Or have I got that confused? Thanks again in advance

Adding a 't' or 'T' to the G29 is helpful because you can see how flat the bed is from the Bed Height Topology map. Ideally, you should have a '0' after each decimal point. Like +0.0xxx or -0.0xxx The last line isn't supposed to be positive. I bet you are thinking about previous discussions where people's Z-Axis was going the wrong direction. The DIAGONAL of the matrix should be POSITIVE!!!!

*Just wanted to try it one more time just to make sure
>>>M48 n10 V4
SENDING:M48 n10 V4
M48 Z-Probe Repeatability test. Version 1.85
Positioning probe for the test.
1 of 10 z: -0.791797 mean: -0.791797 sigma: 0.000000
2 of 10 z: -0.793750 mean: -0.792773 sigma: 0.000977
3 of 10 z: -0.792187 mean: -0.792578 sigma: 0.000844
4 of 10 z: -0.794531 mean: -0.793066 sigma: 0.001118
5 of 10 z: -0.793359 mean: -0.793125 sigma: 0.001007
6 of 10 z: -0.798828 mean: -0.794075 sigma: 0.002316
7 of 10 z: -0.807422 mean: -0.795982 sigma: 0.005139
8 of 10 z: -0.805469 mean: -0.797168 sigma: 0.005740
9 of 10 z: -0.800781 mean: -0.797569 sigma: 0.005530
10 of 10 z: -0.800000 mean: -0.797812 sigma: 0.005296
Mean: -0.797812
Standard Deviation: 0.005296
echo:endstops hit: Z:-0.80

Those are super good numbers!!! Trike is the only one with better numbers so far. You might want to use the 'L' parameter to stress the X & Y axis a little also and see if there is much additional extra slop there. Like M48 L 7 but my guess is your machine is very tight and crisp! I wish mine could do those numbers!