First trigger height way off than following

[PuddingBaer91]

Hi there,

i upgraded my Anycubic Predator (delta printer) with the duet smart effector. I noticed when i calibrate the trigger height the first probe is often much more off than the following probes: (probing at the same XY location!)

10.2.2021, 12:51:38	M98 P"0:/macros/trigger height"
Stopped at height -0.206 mm
10.2.2021, 12:51:35	M98 P"0:/macros/trigger height"
Stopped at height -0.212 mm
10.2.2021, 12:51:33	M98 P"0:/macros/trigger height"
Stopped at height -0.206 mm
10.2.2021, 12:51:32	M98 P"0:/macros/trigger height"
Stopped at height -0.199 mm
10.2.2021, 12:51:29	M98 P"0:/macros/trigger height"
Stopped at height -0.193 mm
10.2.2021, 12:51:27	M98 P"0:/macros/trigger height"
Stopped at height -0.206 mm
10.2.2021, 12:51:24	M98 P"0:/macros/trigger height"
Stopped at height -0.193 mm

As i am using 0.9° steppers the difference should only be 0.006 mm. Whats the problem here?

thank you

[Veti]

try this macro.
it does 10 checks with average. this will give a better overview.

have you adjusted the sensitivity of the smart effector? maybe its note sensitive enough.

[PuddingBaer91]

no i use the stock smart effector values. I think you forgot the macro or i am blind?