https://github.com/pcboy/g81_relative

Convert g81 marlin output to relative values
https://github.com/pcboy/g81_relative

marlin marlin-firmware prusa-i3-mk3

Last synced: 3 months ago
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Convert g81 marlin output to relative values

• Host: GitHub
• URL: https://github.com/pcboy/g81_relative
• Owner: pcboy
• Created: 2018-11-26T00:55:50.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2021-02-01T05:59:51.000Z (almost 4 years ago)
• Last Synced: 2024-10-03T05:41:13.011Z (3 months ago)
• Topics: marlin, marlin-firmware, prusa-i3-mk3
• Language: Ruby
• Homepage:
• Size: 2.34 MB
• Stars: 43
• Watchers: 7
• Forks: 10
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

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README

        
![Build and Deploy](https://github.com/pcboy/g81_relative/workflows/Build%20and%20Deploy/badge.svg)

https://github.com/PrusaOwners/prusaowners/wiki/Bed_Leveling_without_Wave_Springs

Following that tutorial and because I didn't want to update my firmware only to have relative numbers, I made a script to convert the output from Marlin to the relative numbers you need.  

Script takes a file as parameter with G81 output, like that:

```

Recv:   0.16500  0.18463  0.19991  0.21083  0.21741  0.21963  0.21750

Recv:   0.16046  0.18181  0.20058  0.21676  0.23036  0.24138  0.24981

Recv:   0.15630  0.18067  0.20295  0.22315  0.24126  0.25727  0.27120

Recv:   0.15250  0.18120  0.20704  0.23000  0.25009  0.26731  0.28167

Recv:   0.14907  0.18342  0.21283  0.23731  0.25687  0.27150  0.28120

Recv:   0.14602  0.18730  0.22033  0.24509  0.26159  0.26984  0.26981

Recv:   0.14333  0.19287  0.22954  0.25333  0.26426  0.26231  0.24750

```

Then when you do:

```

$> ruby gen.rb output.txt

      Raw values:

      -0.07	-0.02	-0.01

      -0.08	0	0.05

      -0.09	0.02	0.02

      Degrees:

      50°CCW	14°CCW	7°CCW

      58°CCW	0	36°CW

      65°CCW	14°CW	14°CW

      Fractional Turns:

      1/10CCW	0CCW	0CCW

      1/5CCW	0	1/10CW

      1/5CCW	0CCW	0CCW

```

You get the proper output relative to the center. You also get the degrees and fractional turns from the correct position for each screw.  

In the current example you should turn the upper left screw 50° counter clockwise.  

You can also access the converter directly online by going to: https://pcboy.github.io/g81_relative/

# Contributors

[chrisbcole](https://github.com/chrisbcole) for the degrees/fractional turns output