Hello
i did a small web app for calibrating dual extruders
it would be nice to have it as a plugin in the UI some how
also then the plugin can have more direct actions to macros and more
https://www.youtube.com/watch?v=TGciXCzFVCI
http://www.jcbsystems.com/nozzle/
Tryning the new probe mode 7
and sensorless homing
i get this
"Error: Z probe already triggered before probing move started"
any advice ?
I had similar problems with my drive shaft extruder
it was like long waves
the solution for me was to make a more solid mount for the e3d/heatsink
i was using the normal e3d heatsink with a clamp at the top
but i guess the cable made it "swing a little" making this long waves
after changing to the aero heatsink (it has 2 screw holes , so it can be screwdown very tight)
this problem vent a way
may not be your problem but try to add some straps or something to test if that's your problem
i can comfirm the wrong direction on homing as mchiriciuc says (CoreXY )
it happens sometimes but most of the times it works fine
i have not yet upgrade to the latest FW will do that soon
and do more test
i do have 0.9 on the Z
but i do have 2 different once 
and dont remember the spec
looks like it works now
time will tell if its good enugh
got it working
the Z was much harder to finde a working settings
i hade do play with speeed,current and sensitivity
There was problem pushing the home all button
one by one was no problem but home all sometimes ignored(? or stall was detected right away) one of the axis
it helped to get the motor runing before adding the S1 flag
and i hade to remove the 2 bump after the hit to get it 100%
video:
https://www.dropbox.com/s/h7xqrc1uu0qdyo3/2017-11-18%2009.43.07.mp4?dl=0
2 Qs
*how do set the printer not to use the probe and use stall when runing mesh grid
bed.g inclued in bottom
*how can do a test to see repeatability (is it called that ?)
here is my current homing files
(a bit dirty , old gcode and wrong commetns…
HOME ALL ---------
HOME X -----------
M400
M915 X S3 R2
G91 ; relative mode
M913 X50 Y50 ; reduce motor current to 50% to prevent belts slipping
G1 X4 F4000 ;
G1 X-4 F4000 ;
G1 X-340 F5000 S1 ; move up to 340mm in the -X direction, stopping if the homing switch is triggered
;G1 X4 F4000 ; move slowly 4mm in the +X direction
;G1 X-10 F3000 S1 ; move slowly 10mm in the -X direction, stopping at the homing switch
M400
M913 X100 Y100 ; motor currents back to normal
G90 ; back to absolute mode
HOME Y -----------
;homing using a y-MAX endstop
M400
M915 Y S3 R2
G91 ; relative mode
M913 X50 Y50 ; reduce motor current to 50% to prevent belts slipping
;G1 Z4 F200 ; lowers bed 4mm to avoid dragging nozzle over the bed
G1 Y-4 F3000 ;
G1 Y4 F3000 ;
G1 Y200 F5000 S1 ; move up to 340mm in the +Y direction, stopping if the homing switch is triggered
G1 Y-4 F3000 ; move slowly 4mm in the -Y direction
;G1 Y10 F3000 S1 ; move slowly 10mm in the +Y direction, stopping at the homing switch
;G1 Z-4 F200 ; rises the bed 4mm back up
M400
M913 X100 Y100 ; motor currents back to normal
G90 ; back to absolute mode
HOME Z -----------
M280 P3 S160 I1;reszet
M915 Z S2 R2
G91 ; relative mode
G1 Z6 F1000 ; raise head 4mm to ensure it is above the Z probe trigger height
G90 ; back to absolute mode
G1 X150 Y100 F6000 ; put head over the centre of the bed, or wherever you want to probe4
G91
G1 Z-6 F800
;G90
M913 Z45 ; reduce motor current to 50% to prevent belts slipping
G1 Z-320 F800 S1
;M98 PDeployProbe.g ; deploy the probe
;G30 ; lower head, stop when probe triggered and set Z to trigger height
M913 Z100
;M98 Pretractprobe.g ; Retract the probe
BED.G ---------------------------------
G28 ; home the printer
;G29 ;probebed
G29 S1;
G10 P0 X0 Y0 Z0.60;
G10 P1 X0 Y-0.7 Z-0.8;
dont use springs
im just playing now we will see if iy works
im also goning to get a Precision Piezo
Quick question @dc42 i have 2 motors on Z will that be a problem ?
I have a belt driven Z on a coreXY so can give it a try
sounds like fun
been using it for X/Y now for a some days and it works good
i let you know the result later
do you have a link ?
found it
https://www.duet3d.com/forum/thread.php?id=2753