3.5.0-b2

moth4017

just a quick note after updating to 3.5.0-b2 my axis speeds have all increased X y and Z

droftarts

@moth4017 is this expected behaviour, and/or resolve a problem, or is this unexpected and a new issue?

Ian

moth4017

@droftarts im quite used to the speed of my printer homing in 3.5.0-b1, and after the update i noticed the speed at which it was homing was faster .

dc42

@moth4017 said in 3.5.0-b2:

just a quick note after updating to 3.5.0-b2 my axis speeds have all increased X y and Z

Please see the 3rd item in the upgrade notes at https://github.com/Duet3D/RepRapFirmware/wiki/Changelog-RRF-3.x-Beta, and report back if you don't think that explains it.

moth4017

@dc42
i guess your referring to this.

The default maximum accelerations were very conservative by modern standards so they have been increased. Likewise the default maximum Z speed has been increased and the default Z steps/mm has been reduced. These changes will only affect you if you do not define the maximum speeds, accelerations and steps/mm for all axes using M201, M203 and M92.

these were the values i was using in 3.5.0-b1 and b2
M92 X80.00 Y80.00 Z640.00 E535.00 ; set steps per m
M203 X22000.00 Y22000.00 Z1500.00 E10000 ; set maximum speeds (mm/min)
M201 E12000 ; set accelerations (mm/s^2)
M201.1 X5000 Y5000 Z20.00 ; set accelerations (mm/s2)

dc42

@moth4017 said in 3.5.0-b2:

M201 E12000 ; set accelerations (mm/s^2)

You are only defining the E acceleration, therefore X Y and Z will use default accelerations, which have changed in this release.

Proschi3D

have the values in stealthChop changed?
I have with me on the stepper motors
M569 P0 D3 H50 v30
and this value worked very well in beta 1.
in the current beta 2, however, the axes stop briefly during fast movements

moth4017

This post is deleted!

dc42

@Proschi78 there has been no intentional change to the stepper motor configuration default values since 3.4.