Laser sensor calibration info

[Ladusse]

Hi I just installed my laser sensor and I don't now what I should for the ''R" value. here is my result.

Thanks

[Phaedrux]

Have you seen?

https://duet3d.dozuki.com/Wiki/Duet3dFilamentMonitor_LaserVersion

[Ladusse]

@Phaedrux yes I seen it I don't understand the R value the minimum and maximum permitted measured movement as a percentage of commanded movement. As the example calibration reports 43% to 115% then you might choose R30:130.

Why it choose R30:130 with the reports of 43% to 115%?

[alankilian]

The R value says:

STOP the print if the measured filament amount is less than 30% of the commanded filament amount.

STOP the print if the measured filament amount is more than 130% of the commanded filament amount.

Since the filament sensor is not completely accurate, you need to set a range of acceptable values or your print will stop on almost every single extrusion.

What I did is to set the range large like R10:500 then I did a print and looked at the result values and saw a range of something like 85% to 115% so I set my range to R50:150.

[Ladusse]

@alankilian thanks for the explication it's now more clear.