Upgrading from 1.18 to latest version

drmaestro

Some more information…..

I edited config.g to add a ; before the M552 command. This time I have been able to access the SD card using the mount option on Repetier. I followed the upgrade procedure again, this time using M997 S0:1 command and it worked. I used the WiFi macro and cınnected to the WiFi network. Then edited config.g to remove the "," in front of the M552. Now I have 2 problems:

The WiFi module is deactivated if I turn off the printer. I have to run the WiFi macro, followed by M587 and M552 S1 to run the WiFi module again each time to connect to the network. It shouldn't behave like this, as I have removed the ; from config.g
My BLTouch stopped its function. It gets triggered when it touches the bed but it doesn't stop the descent of the hotend, so it crashes into the bed if I don't turn the machine off.

drmaestro

Sorted the connection problem: It seems that my old config.g file had a P address after M552, so removing that address solved the connection problem. Now, let's find a solution for BLTouch…...

drmaestro

It seems that other people also have some problems with BLTouch on the new firmwares. When I home the Z axis, BLTouch is triggered when it touches something (I used a small card to trigger it) but immediately redeploys. This isn't how it behaved before (it should only retract the pin, not redeploy it). Could this be a bug?

drmaestro

On the firmware page in Github, there is a changed behaviour report as follows:

XYZ options have been removed from the M558 command. Use the new M574 S2 option instead.

Could this be the reason why BLTouch is not acting as it should?

The endstops portion of my config.g is as follows:

; Endstops
M574 X1 Y1 Z0 S0 ; Define active low and unused microswitches
M574 S1 ; Define active high microswitches
M558 P5 X0 Y0 Z1 H5 F100 T2000 ; Set Z probe type to switch, the axes for which it is used and the probe + travel speeds
G31 X-30 Y0 Z1.86 P25 ; Set Z probe trigger value, offset and trigger height
M557 X15:195 Y15:175 S25 ; Define mesh grid

So should I remove the XYZ parts from M558 command and add a M574 Z1 S2 command?

I also find the explanation of M574 and M558 to be confusing on the wiki page….

drmaestro

I made the following changes:

; Endstops
M574 X1 Y1 S0 ; Define active low and unused microswitches
M574 S1 ; Define active high microswitches
M574 Z0 S2
M558 P5 H5 F100 T2000 ; Set Z probe type to switch, the axes for which it is used and the probe + travel speeds
G31 X-30 Y0 Z1.86 P25 ; Set Z probe trigger value, offset and trigger height
M557 X15:195 Y15:175 S25 ; Define mesh grid

It seems to be working now. I am testing it.

dc42

If the homez.g file and the Z homing part of homeall.g use a G30 command to to Z homing (which is the usually way when using a Z probe), then you don't need to set up a Z endstop at all.

drmaestro

Here's the actual homez.g :

; Lift Z relatively to current position
G91
G1 Z5 F4800
G90
G1 X140 Y90 F3000 ; Go to safe loaction
M98 Pdeployprobe.g ;deploy the probe
G91

; Move Z down until the switch triggers
G1 Z-205 S1 F1800
M98 Pretractprobe.g ;retract the probe after triggering.

; Back to absolute positioning
G90

; Tell the firmware where we are
G92 Z1.5

So, what you suggest is to use G30 instead of G1 Z-205 S1 F1800?

dc42

Yes. See #1 at https://duet3d.com/wiki/Common_problems_and_their_solutions.

drmaestro

Thanks for the info. If I make this change in homez.g and homeall.g, then I need to change my Endstops section in config.g as follows?:

; Endstops
M574 X1 Y1 S0 ; Define active low and unused microswitches
M558 P5 H5 F100 T2000 ; Set Z probe type to switch, the axes for which it is used and the probe + travel speeds
G31 X-30 Y0 Z1.86 P25 ; Set Z probe trigger value, offset and trigger height
M557 X15:195 Y15:175 S25 ; Define mesh grid

(Removed M574 S1 ; Define active high microswitches (as it is already empty) and M574 Z0 S2)

dc42

If you use G30 to do Z homing then Z0 in M574 is technically correct, although it doesn't actually matter.