Weird Bltouch behaviour



  • Hi all (and dc42, thanks for helping with me on the retraction issue on my HEVO). Thought everything was gonna be fine but nope, now it's a BLtouch issue. To make a long story short, recently during G28 or G32 right before a print, I noticed the nozzle starts crashing into bed right before it starts printing, and so I looked into it. What I notice is that during the G28 or G32 when it's probing, though most of the time it's during G28, the probe deploys the pin, but then somehow suddenly retracts it immediately after deploying the pin before it even touches the probe, causing the printer to think the bed is lower than it is, this did not happen before and only recently, so I am at a loss at what is causing it. Here is my starting gcode in S3D:

    G28
    G92 E0
    G1 E-3 F300
    G32 ;ABL for HEVO
    G92 E0
    G1 X5 Y5 Z0.2 ; position for priming
    G1 F200 E10.1
    M83 ;Must set for Duet to use relative extrusion.

    The wires and connections all look fine.


 

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