SOLVED DWC Z-Probe flicks between 0 and 1000 whilst printing

PaulHew

Was monitoring my speeds on the RailCore this morning and saw this in DWC.
https://www.dropbox.com/s/b35uvqfzimf0pff/VID_20200615_110539.mp4?dl=0

I have never noticed it before in earlier FW versions.
Currently running
FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 3.1.1 ELECTRONICS: Duet Ethernet 1.02 or later + DueX5 FIRMWARE_DATE: 2020-05-19b2

Regards,

Paul

deckingman

@PaulHew I think that's fairly normal but it would depend on what type of probe you are using and if it "thinks" the printed part is the bed as it passes over it. The firmware will ignore it for all moves other than when homing Z.

dc42

If you are using an IR sensor as the Z probe, then that's completely normal. It may also be normal when using a capacitive sensor. With an inductive sensor, it might happen on one particular layer.

PaulHew

Sorry, I missed putting that in, it is a BL Touch V3

Just never noticed it before.

Regards,
Paul

oliof

If it's a BLTouch it could be a loose crimp/cable or insufficient strain relief on the cable near the BLTouch.

Phaedrux

Great sound track by the way.

PaulHew

@Phaedrux I aim to please

PaulHew

Update.
All of a sudden, I could not home Z.
White wire on Probe socket had detached itself.

Fixed and no more flickering.