I could use some help

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

elmoret

273 posts!

fcwilt

@elmoret said in I could use some help:

273 posts!

A lot I know. We will get mac sorted.

Frederick

A Former User

@fcwilt yes, that is what’s happening. The bed did touch the endstop and then back off; that’s an improvement.

fcwilt

@mac said in I could use some help:

@fcwilt yes, that is what’s happening. The bed did touch the endstop and then back off; that’s an improvement.

Here's the problem.

When you tried jogging Y by -10 it went toward the front? Correct?

But the homing moves were supposed to be:

a minus move
a plus move
a minus move

Based on the jogging test it should have moved:

toward the front
toward the back
toward the front

I think there are two problems:

the normal/reverse setting for the Y stepper is wrong (see M569 P0...)
the steps per mm are wrong - too few (see M92)

I would like you to:

change the M569 setting from whatever it is to the other setting
try the home Y test and observe the movements
try the jogging test and verify the correct directions
if the directions are correct find some means to measure a move of, say, 100mm and see if a 100mm jog moves that distance.

Thanks.

Frederick

alankilian

@fcwilt said in I could use some help:

But the homing moves were supposed to be:

a minus move
a plus move
a minus move

Based on the jogging test it should have moved:

toward the front
toward the back
toward the front

Since it's a bed-slinger in Y, isn't a PLUS move going to move the bed towards the FRONT? (Move the head towards the +y part of the bed.)

I may be confused.