BLTouch w/ DUet 3 mini 5+ Wifi (Ender 3 Pro)

[Gixxerfast]

@teachmedavis747

Yes i understand. I first assumed you were talking about the probe pin and the extruder going up/down in the wrong direction.

Btw, also edit your homeall.g with the changes you've made in homey.g above.

[Gixxerfast]

@teachmedavis747

Well it doesn't matter at all with the Ender as you can reach the endstops no matter where the other axis is but only as a personal preference.

You can disregard that comment

It's something like this I guess:

G91               ; relative positioning
G1 H2 Z5 F6000    ; lift Z relative to current position
G1 H1 X-240 F3000 ; move quickly to X axis endstop and stop there (first pass)
G1 H2 X5 F6000    ; go back a few mm
G1 H1 X-240 F240  ; move slowly to X axis endstop once more (second pass)

G1 H1 Y-240 F3000 ; move quickly to Y axis endstop and stop there (first pass)
G1 H2 Y5 F6000    ; go back a few mm
G1 H1 Y-240 F240  ; move slowly to Y axis endstop once more (second pass)
G1 H2 Z-5 F6000   ; lower Z again
G90               ; absolute positioning

Just as an example.

[teachmedavis747]

@gixxerfast

So after much etsting I realized that the printer is not reading the homex and homey correctly. It completely skips the "H1" commands. For example:

G1 H1 X-240 F3000 ; move quickly to X axis endstop and stop there (first pass)

Therefore, it never actually homes x and y to the endstop pins. I tried to change it to H2

e.g. G1 H2 X-240 F3000 ; move quickly to X axis endstop and stop there (first pass)

and it worked, however, it does not recognize the endstop pin. I'm stuck again. Any help here is greatly appreciated as always. Thank you.

G91               ; relative positioning
G1 H2 Z5 F6000    ; lift Z relative to current position
G1 H1 X-240 F3000 ; move quickly to X axis endstop and stop there (first pass)
G1 H2 X5 F6000    ; go back a few mm
G1 H1 X-240 F240  ; move slowly to X axis endstop once more (second pass)
G1 H2 Z-5 F6000   ; lower Z again
G90               ; absolute positioning

[Gixxerfast]

@teachmedavis747

If it doesn't try to move -240 when in relative mode (G91) with the H1 parameter I guess that the endstop is maybe already triggered.

Check endstop status with the M119 command and see.

Otherwise I'm a bit stumped...

[teachmedavis747]

@gixxerfast

I think you are correct. Without hitting either of the stops M119 reads:

m119 Endstops - X: at min stop, Y: at min stop, Z: no endstop, Z probe: not stopped

Edit:

I read another discussion and found this would finally work to get the print head to move towards the end stop... but the endstop pin is still not being recognized.

M574 X1 S1 P"!^io5.in"                              
M574 Y1 S1 P"!^io6.in"

[Gixxerfast]

@teachmedavis747 With Duet 3 boards you don’t need to explicitly enable pullups. So try to remove the ^ but keep the inverse (!) I guess you reverted back to the H1 parameter? Also check with M119 after you made the changes. Try holding in the endstops and check with M119 again.

[teachmedavis747]

@gixxerfast

Yes so with or without the "^" the "!" works. But now I ran into the other issue of the end stops reading properly. I guess the next step is to check the wiring on those and see what I can do. Thanks for your help on this. Hope you had a good weekend.

[Phaedrux]

Yes please show us how the endstops are wired at the board.

H2 will move the axis regardless of the endstop. Not what you want to do.

[teachmedavis747]

@phaedrux

Okay. Thanks. Here is a photo.

[Phaedrux]

@teachmedavis747 said in BLTouch w/ DUet 3 mini 5+ Wifi (Ender 3 Pro):

But now I ran into the other issue of the end stops reading properly.

What exactly do you mean by this?

Wiring looks ok,

When you check the endstop status with M119 when the switches are pressed and not, what does it say?

[teachmedavis747]

@phaedrux

m119 Endstops - X: at min stop, Y: at min stop, Z: no endstop, Z probe: not stopped

this is when they are not pressed

[Phaedrux]

And when they are pressed? Does it change?

What is your M574 now?

[Gixxerfast]

@teachmedavis747 The endstops on the Ender 3 are stock wired NC so with the builtin pullup this is how my configuration looked with the mini5+

; Endstops
M574 X1 S1 P"io5.in"
M574 Y1 S1 P"io6.in"

I think you should remove the inverse (!) but as @Phaedrux says, check with M119 when the endstop IS pressed also.