Two motor extruder custom setting

awitc

Hi!

I have configured an extruder with two motors, with a given step ratio. I am wondering if it is possible to override that setting in specific moments, ie. during a retraction,
to obtain a different ratio than the one in the config.

For instance, a normal command (here the E value is used for both motors, according to config ratio):

G1 X151.683 Y193.377 E0.60904

At certain moments, I want to change the value, so that one of the motors does not move:

G1 X151.683 Y193.377 E0.60904:0

I am looking forward to any solution ideas!

Best regards,
AW

droftarts

@awitc If you have set a mixing ratio with M567 (see https://docs.duet3d.com/en/User_manual/Reference/Gcodes#m567-set-tool-mix-ratios) you can send a command to change this ration. Also, you can send G1 E1:0, because this overrides any M567 setting, see the note for the E parameter: https://docs.duet3d.com/en/User_manual/Reference/Gcodes#g1-controlled-linear-move

Ennn The amount to extrude between the starting point and ending point1
...
1Where a tool has more than one extruder drive then Ennn:nnn:nnn etc is supported to allow for the individual movement of each to be controlled directly. This overrides the extruder mix ratio set with M567

Ian

awitc

@droftarts Great! Exactly what I was looking for, must have overlooked the note. Thanks!