I could use some help

A Former User

@fcwilt Z went up, and then it went down. It sounded like a real printer / that's a first. My guess is, it's about 30mm off the bed at the moment. I think that was a choice in the RRF? That the first time Z homed, it stopped at 30 above?

A Former User

@fcwilt I'll google them and go from there.

A Former User

@fcwilt if you have the time, please send the X and Y code, then be off with you to your own time, and thank you in advance.

fcwilt

@mac said in I could use some help:

@fcwilt got it, ship me the X and Y code please. I'll test Z right now to confirm that the changes accomplished what I may have to use to correct X and Y if they aren't up to snuff.

OK

Homing X should look something like this:

G91
G1 H1 X-230 F3600
G1 X15
G1 H1 X-10 F360

G90
G1 X110 F3600 ; this just moves X to the centerline of the bed - doesn't matter where - it can be any place at all that suits you.

Homing Y should look something like this:

G91
G1 H1 Y-230 F3600
G1 Y15
G1 H1 Y-10 F360

G90
G1 Y110 F3600 ; this just moves Y to the centerline of the bed - doesn't matter where - it can be any place at all that suits you.

Now I would do homeall.g like this:

M98 P"homeZ.g"
M98 P"homeX.g"
M98 P"homeY.g"

It is not as efficient as it can be but it does re-use the code you already have in the other axis homing files.

Now I have no idea what kinds of speeds your printer is capable off. I just used F3600 and F360 since they should be workable and safe. Feel free to pick other speeds as suits you.

Frederick

A Former User

@fcwilt thanks very much. hopefully, I'll be printing the next time we speak.

fcwilt

@mac said in I could use some help:

@fcwilt thanks very much. hopefully, I'll be printing the next time we speak.

Did you get Z homing to work?

Frederick

A Former User

@fcwilt Let's talk later. If I make a video of it, I'll send you a link.

A Former User

This post is deleted!

A Former User

@fcwilt

G91                      ; relative positioning
G1 H2 Z5 F3600           ; lift Z relative to current position
G1 H1 X225 Y225 F1800    ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X-5 Y-5 F3600      ; go back a few mm
G1 H1 X225 Y225 F360     ; move slowly to X and Y axis endstops once more (second pass)
G90                      ; absolute positioning
G1 X-10.875 Y4.375 F3600 ; go to first bed probe point and home Z
G30                      ; home Z by probing the bed

This is the code that's in the system. It doesn't look like your suggestion? So I'm not sure how to proceed.

fcwilt

@mac said in I could use some help:

@fcwilt

G91                      ; relative positioning
G1 H2 Z5 F3600           ; lift Z relative to current position
G1 H1 X225 Y225 F1800    ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X-5 Y-5 F3600      ; go back a few mm
G1 H1 X225 Y225 F360     ; move slowly to X and Y axis endstops once more (second pass)
G90                      ; absolute positioning
G1 X-10.875 Y4.375 F3600 ; go to first bed probe point and home Z
G30                      ; home Z by probing the bed

This is the code that's in the system. It doesn't look like your suggestion? So I'm not sure how to proceed.

As I mentioned that is the code for homing with a Z probe.

You have a Z endstop switch as well so you can use that, instead of the Z probe, and get quicker and simpler homing.

We discussed getting rid of that code and replacing it with my code.

What happened to doing that?

Frederick

A Former User

@fcwilt

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Mon Jun 27 2022 06:45:01 GMT-0700 (Pacific Daylight Time)
M98 P"homeZ.g"
M98 P"homeX.g"
Mpo P"homeY.g"

; Uncomment the following lines to lift Z after probing
;G91                     ; relative positioning
;G1 Z5 F60               ; lift Z relative to current position
;G90                     ; absolute positioning

This is what I put in homeall.g's place.

A Former User

@fcwilt link text

The is Z homing again.

fcwilt

@mac said in I could use some help:

@fcwilt

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Mon Jun 27 2022 06:45:01 GMT-0700 (Pacific Daylight Time)
M98 P"homeZ.g"
M98 P"homeX.g"
Mpo P"homeY.g"

; Uncomment the following lines to lift Z after probing
;G91                     ; relative positioning
;G1 Z5 F60               ; lift Z relative to current position
;G90                     ; absolute positioning

This is what I put in homeall.g's place.

So you where showing me the code from homeall.g - I misunderstood.

That code you now have will work fine IF the individual homing files work.

You can strip it down to this:

; homeall.g
; called to home all axes

M98 P"homeZ.g"
M98 P"homeX.g"
M98 P"homeY.g"

But don't test it until you have verified that homing each axis by itself is working.

Frederick

A Former User

@fcwilt that's what I'm working on right now.

A Former User

@fcwilt

link text

This the first effort to home X and Y.

fcwilt

@mac said in I could use some help:

@fcwilt

link text

This the first effort to home X and Y.

OK X is behaving very strangely.

But as to Y:

Is the Y endstop at the front of the machine or the back?

Frederick

alankilian

@mac I see that the Duet Mini 5+ does not have on-PCB pullups on the IO pins.

You need to go to the RRF configurator and select "Active low with pullup" if you are using normally-open switches connected to ground as endstops.

Without a pullup, every time a stepper motor starts moving, your machine will start to get signals indicating the endstop switch is being pressed.

A Former User

@fcwilt it’s at the back.

A Former User

@alankilian sorry to disappear, texting on this iPhone 8’s a bitch. I’ll make that change and post a video of the results do you can see the results.

fcwilt

@mac said in I could use some help:

@fcwilt it’s at the back.

So you have a moving bed.

To get to the max end of Y the bed moves toward the front?

To get to the min end of Y the bed moves toward the back?

But stepping Y by minus 10 caused it to move toward the front?

Frederick