Marlin: [FR] Make DELTA_DIAGONAL_ROD_TRIM_TOWER adjustable variables

[Zezoh]

Thank you for your great work,

Is there a possibility to add a way to change the diagonal rod length for each tower using LCD instead of doing it in Configuration.h file ( //#define DELTA_DIAGONAL_ROD_TRIM_TOWER { 0.0, 0.0, 0.0 })

Steps to Follow:

1. Using G33 for Delta Auto-Calibration
2. Print a testing model it could be a hexagon shape
3. Measure hexa model and adjust each rod separately with LCD.

Regards,

[thinkyhead]

Actually, no. These values are not variable. We'll put it on the TODO list for Marlin 2.0.

CC: @LVD-AC

[Zezoh]

Thanks Scott,

[LVD-AC]

Print a testing model it could be a hexagon shape
Measure hexa model and adjust each rod separately with LCD.

Dimensional errors are most likely NOT caused by a wrong diagonal rod value. You better know what you're doing before messing with it. Just for this reason I'm not in favor to make DELTA_DIAGONAL_ROD_TRIM_TOWER changeable to easy (G-code, LCD).

[Zezoh]

Dear Luc, thank you for your feedback, can you please provide more details about the causes of dimensional errors,

I used this guide (https://www.thingiverse.com/thing:1274733 )

[LVD-AC]

Diagonal rod length is (should be) pretty accurately known; applying the rather large corrections required to compensate for dimensional errors is just making sure you get the rod length wrong.

[cjsoong]

@Zezoh You can try my modified version to meet your needs.
DELTA_DIAGONAL_ROD_TRIM_TOWER & DELTA_RADIUS_TRIM_TOWER adjustable .
Marlin-bugfix-2.0.x_20180417b.zip

[Zezoh]

Thanks @cjsoong, I will give it a try

[boelle]

@Zezoh what was the result?

[boelle]

@thinkyhead Another one that needs to be closed. Sorry, I got bored.

[evandene]

@Zezoh You can try my modified version to meet your needs.
DELTA_DIAGONAL_ROD_TRIM_TOWER & DELTA_RADIUS_TRIM_TOWER adjustable .
Marlin-bugfix-2.0.x_20180417b.zip

I was looking up your configuration file and I was wondering how you did set your EXTRUDER feedrate. I couldn't find any steps per unit set for the extruder(s)
Could you help please?

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