This printer is set up for dual extruders. after over a week of banging my head against the wall trying to solve this one, I FINALLY figured it out tonight! If you made the same goof that I did, I'll buy you a beer! That part of my config is nothing special and looks like: Mine is on Klipper v0.10.0-546-ga709ba43, by the way, so a little newer than what you indicate. I was curious if you figured anything out on your setup? I'm digging now in the Klipper code trying to figure out how it's coming up with what it is.
Obviously, I could work around it by fudging the numbers, but I want to get to the bottom of it. However, measuring the actual extrusion, if I command it to extrude 50mm, it extrudes exactly 25mm. steps/mm (normal 200 steps per rotation, or 1.8deg, and 16 microsteps), which yields a step distance of 0.010386. Mine is not a geared extruder, but a plain extruder configuration that is 96.275. I'm in the process of switching from Marlin to Klipper (due to some Marlin 2.1.x stability issues I haven't resolved) and am using the same exact settings from there that work perfect. Mine is on the BTT Octopus v1.1 board with the TMC2209 drivers. Yet, in the thread you speak of under extrusion and in this last reply you say that it "ends up extruding 1/2 the expected length". Though I'm a little confused as your original post showed you commanded 50mm to be extruded but that 100mm was extruded (which is twice instead of half). There’s no need for me to reiterate what the excellent Klipper documentation also mentions, so if you’re looking for more information, I recommend checking out the official documentation.U/swordfish45 - I think I'm having a very similar issue to yours and was curious if you ever resolved it. For more accurate calibration of the final rotation_distance for the extruder, use the “ measure and trim” method. Please note that this way of calculating the rotation distance value gives you an approximation of the final value based on the E steps provided. So, the value for the BMG extruder will be 7.710. I recommend using three decimals for the calculated extruder rotation distance. Now, we take this value and add it under the section of your printer.cfg file. This translates into a rotation distance of 7.710843373493976.
#Orbiter extruder klipper driver
Let’s take the popular BMG Extruder which has an E step value of 415 when combined with a regular 1.8-degree stepper motor and the stepper driver is set to 16 microsteps. The formula for calculating the extruder rotation distance value to be used in the printer.cfg file is the following: rotation_distance = * /
#Orbiter extruder klipper full
Full steps/rotation – determined by the type of stepper motor used.To calculate the extruder rotation distance, we need to have the following information:
#Orbiter extruder klipper how to
3 What’s next? How to calculate the Extruder Rotation Distance for Klipper?
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