Duet 2 Wifi + BLtouch issues on Ender 5 pro

[mitch]

@alxndr My direct drive Hemera and BLtouch change the limits. The steps described by @Phaedrux will work. He helped me get up and running when I converted my Ender 5 Pro.

Just as an example, here is my config. g settings you can see from github:

; Axis Limits
M208 X220 Y207 Z300 S0                                 ; set axis maxima

; Define Mesh
M557 X0:180 Y40:195 S40                                ; define mesh grid

I have 40mm spacing (S40).

Total points probed = 20
4 x 5 grid

The four corners probed end up being:

(0,40)               (0,160)

(160,40)             (160,160)

I have been specifying the distance between probe points (S40) but it looks like the P parameter would be more useful as it calculates the distance for you given a specified number of points and a defined limit. I may try to swap over to that method myself.

[alxndr]

@mitch just out of curiosity, how and where in comparison to your nozzle is your bltouch mounted?

[mitch]

@alxndr that is also defined in the config.g I posted. It is in the G31 setting for X and Y offsets.

; Z-Probe
M950 S0 C"exp.heater4"                                 ; create servo pin 0 for BLTouch
M558 P9 C"zprobe.in+zprobe.mod" H5 F120 T6000          ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X-43 Y3 Z2.0431                               ; set Z probe trigger value, offset and trigger height
M557 X0:180 Y40:195 S40                                ; define mesh grid

[alxndr]

@mitch I don't get how we have the same printer and yet we have different values for axis limits.

[mitch]

I have a hemera direct drive extruder w/ BLtouch. You have a stock bowden extruder. You just need to go find the limits you have with your BLtouch setup and change the values.

[Phaedrux]

If you want to probe 4 points change your M557 from using S40 which is spacing between points to P4 which is probe 4 points and figure out the spacing automatically.

[alxndr]

@Phaedrux so I did that. But it only probes 3 while saying it can't reach some points.

[alxndr]

@mitch would you happen to have an example of start and end gcodes that i could look at? im trying to set mine right now. Thanks!

[alxndr]

@Phaedrux hey again! would you have any suggestions for start and end gcode? this is probably the very last thing i have to do until i can finally print. thanks!

[Phaedrux]

stop.g start.g

[Phaedrux]

@alxndr said in Duet 2 Wifi + BLtouch issues on Ender 5 pro:

But it only probes 3 while saying it can't reach some points.

Adjust your M557 grid based on your M208 size and your G31 probe offset.

If it's saying it can't reach a point, it's because it physically can't get the probe there. So move that point further in where the probe can reach.