Logic analyzer measurement of retraction point

General Discussion
1

Hi,

Im installing Klipper on a Duet 2 Wifi 1.04c board with Raspberry Pi 4.

As part of calibration Im measuring the E0 step pulses with logic analyzer.

I noticed what looks like a small delay fluctuating between 3 to 5ms between end of movement and the retraction point.

Is this normal or will some calibration affect it that may raise concern?

image
image1246×600 42 KB

Signals: 1. E0 Step 2. E0 Dir 3. E0 CSS

Measurement done with extruder microstepping x256, rotation distance 22.857.

Testprint is two circles, one layer, gcode file attached.

single loops Klipper 2021_10_11.gcode.zip (2.1 KB)

2

I’m not sure what you’re reporting, but it would be normal for deceleration and then acceleration to show up as a delay between the last step pulse in the previous direction and the first step pulse in the new direction.

-Kevin