My Extruders run At 200 microsteps any idea what i should use as LIN_ADVANCED?

3D Printing
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1

My Extruders run At 200 microsteps any idea what i should use as LIN_ADVANCED? (Direct drive)

2

Microstepping doesn’t affect the advance algorithm.

Every Filament will have it’s own K value. I suggest you start with M900 K75 in your start Gcode.
Print a test cube. Examine the edges. If it seems to bulge out as it normally does, increase the K value by another 25. Repeat until you have perfect corners on you test cube…

You’ll need to calibrate for every Filament you use. The K value depends on the filament as well as the extruder and Hotend used…

3

I think in my case 75 is too high

4

Then try 50 or lower :slight_smile:

5

Yeah i think i found one. LIN_ ADVANCE still needs some work though My Stepperdrives and motors start running little hot Stepperdrive over 65C motors over 45C. i had to drop current Stepper drivers were over 70C. And i hate to drop the current. I don’t like Skipping steps at all.

6

My print speed is now 77mm/s with hellobeeprusa. Mostly nice print, but when the extruder skips not so nice. 5 mm lost lines in print.

7

@Jukka-Pekka_Ylitalo advance shouldn’t affect stepper heat. Steppers run by microstepping drivers generate constant heat at low speed regardless of load, and decreasing heat at high speeds.

8

You can always lower your acceleration settings in Marlin which will help with overheating…

I use DRV8825 drivers and don’t seem to have any issue with skipping steps

9

I Use RAPS128 With 32 microsteps. I Have 4.4 Kg Nema 17 direct drive with 11 mm drive gear. I have to print PLA above 210 with 0.4 nozzle. if i go lower with the heat the stepping is worse. Higher the quality lowers. I have thinking of going to 0.6 nozzle what do you think? Or should i go lower micro stepping for more torque?

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And my drive gear don’t have spring on tension screw. Really hard to install.

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@Panayiotis_Savva Acceleration doesn’t affect stepper heating. Heat generation in a stepper motor has nothing to do with load, because they operate at constant current. This is very different from other motors which draw more current at higher loads.

The only three things that affect stepper heating are your driver current setting, driver decay mode, and the RPM of the stepper. (Higher RPMs generate less heat.)

12

I am at mixed decay like 2.5volt mixed IS between 1-3.1volts