[HELP] Ender 3 Pro + Duet WiFi 2

Veti

@Phaedrux said in [HELP] Ender 3 Pro + Duet WiFi 2:

Not really. Not easily anyway. You can check this thread out. Though I'm not sure where they ended up with it.

the standard firmware does not have enough free ram to include this. so at the moment the code necessary is not part of the wifi 2 firmware.

see
https://github.com/Duet3D/RepRapFirmware/blob/v3-dev/WHATS_NEW_RRF3.md

[Duet 2 + 12864 display] There is insufficient free RAM to run Duet WiFi/Ethernet with 12864 display

Veti

@didi767 said in [HELP] Ender 3 Pro + Duet WiFi 2:

I noticed that it keeps trying to push/move and making noises like it's stuck. I immediately turned the printer off

this is most likely a wiring problem. likely a wire not making contact because of a bad crimp in the connector. check the wiring with a multimeter.

Phaedrux

All the motors worked correctly when homing?

Can you verify that the movement directions are correct?

When looking at the printer from the front, the print head should move like this:
X+ should go right, X- should go left.
Y+ should go to the back, Y- should go to the front
0,0 should be at the front left corner

And based on this, where are the endstops located? Front, back, left, right?

Can you post your config.g and your homeall, homex, homey, homez, files.

It's possible that the endstops are configured incorrectly, or perhaps the slicer is setup incorrectly causing it to think the print coordinates are not where they are in physical space.

didi767

homez.g homey.g homex.g homeall.g config-override.g config.g bed.g @Phaedrux
X is going the right way but the +Y brings the bed to the front and -Y to the back
another thing, when I'm trying to home X it brings the extruder to the left front corner and then go down, but the problem is that the BLtouch is not aligned with the bed, so it doesn't touch the bed (it's in the air) and the extruder touches it without stopping (I manually triggered the bltouch to prevent the extruder to keep pushing downward). I'm assuming I need to add something to the configuration to make the corner coordinates to include the BLtouch?

the endstops:
for X it's on the left side
for Y it's in the back
and the Z I didn't plug in since I have the bltouch
(Uploading 100%)

didi767

@Veti You were right, one wire slipped out

Phaedrux

@didi767 said in [HELP] Ender 3 Pro + Duet WiFi 2:

but the +Y brings the bed to the front and -Y to the back

It's a bit confusing because the bed is moving, but really we're talking about the position of the nozzle.

So let me ask it another way, when the nozzle is positioned at the front left corner of the bed, are the coordinates 0,0? Or 0,235?

To position the BLTouch correctly change your homeall.g

G90                     ; absolute positioning
G1 X15 Y15 F6000        ; go to first bed probe point and home Z
G30                     ; home Z by probing the bed

Change the X15 Y15 to something closer to X150 Y150

didi767

I changed the values to 150 as you said.
the 0,0 should be at the "tool position"? (sorry for the ignorant question). if it is, yes. it shows 0,0 when homing X and Y.
I'm assuming you wanted to know if it's the right corner? so 0,235 would be the opposite side right?
I can't home Z still since I see the bltouch is "in the air" but the nozzle looks right about the corner of the bed

oh. and the Y+ goes to the front, is that okay? you mentioned it supposed to go back

Phaedrux

@didi767 said in [HELP] Ender 3 Pro + Duet WiFi 2:

the 0,0 should be at the "tool position"? (sorry for the ignorant question). if it is, yes. it shows 0,0 when homing X and Y.

Yes, tool position. So 0,0 has the nozzle at the front left corner of the bed?

@didi767 said in [HELP] Ender 3 Pro + Duet WiFi 2:

oh. and the Y+ goes to the front, is that okay? you mentioned it supposed to go back

Are you saying that the bed moves forward? or the nozzle moves forward on the bed (because the bed is sliding back).

If this image shows your bed, the 0,0 would be the front left corner of the end and the printable area would be in the green area (2,3).

@didi767 said in [HELP] Ender 3 Pro + Duet WiFi 2:

I can't home Z still since I see the bltouch is "in the air" but the nozzle looks right about the corner of the bed

Even with your homeall changed to have X150 Y150? That should cause the nozzle to be roughly positioned in the center of your bed.

didi767

@Phaedrux
Yes, the position is 0,0 and the nozzle is at the corner (front left).
and Yes, the bed moves forward when I'm tapping on +Y (so nozzle is basically moving/positioning backward.
and I changed the homeall with: G1 X150 Y150 F6000.
and you're right, I didn't understand at first to tap the homeall. I just went manual to each axis. now that I tapped the homeall it went to the center.. well.. not really the center when I look straight from above (seems like (1,2) on the graph you posted, a bit to the back of the center point). so I should only use homeall once restarting the machine before print?

I'm trying to print the level test and the motors moves pretty slow, the Z especially (super slow!) is that normal? I remember with stock it was pretty fast

even the extruder is barely working.. it can't extrude

didi767

So.. I increased the values:
M92 X80.00 Y80.00 Z400.00 E741.00 ; set steps per mm
the E value seemed a bit off (but i saw this guy on YouTube that set this value).
so now it seems like it's moving faster but the extruder still doesn't work properly.
any specific values I need to set for the Ender configuration?

Phaedrux

@didi767 said in [HELP] Ender 3 Pro + Duet WiFi 2:

Yes, the position is 0,0 and the nozzle is at the corner (front left).
and Yes, the bed moves forward when I'm tapping on +Y (so nozzle is basically moving/positioning backward.

Ok that sounds correct.

@didi767 said in [HELP] Ender 3 Pro + Duet WiFi 2:

I changed the homeall with: G1 X150 Y150 F6000.

You can adjust the 150 150 values to move the probe closer to the actual center. The important thing was getting it to actually probe on the bed. You can make the same change to the homez file so that it works when you home the Z axis by itself.

Your Z axis is slow because the speed limit set in config.g is very low.

M566 X1200.00 Y1200.00 Z24.00 E300.00              ; set maximum instantaneous speed changes (mm/min)
M203 X9000.00 Y9000.00 Z180.00 E6000.00            ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z100.00 E5000.00              ; set accelerations (mm/s^2)

M203 Z180 is very slow. Try changing these values for Z

M566 Z60
M203 Z600
M201 Z200

As for your extruder steps per mm, it's best to calibrate that using a technique like this: https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40

didi767

@Phaedrux
I'll do those changes soon and update.
one question about the leveling procedure, so when I homeall and it does the Z axis I can see that the bltouch stops the motor, but how does it know if the bed is leveled? isn't it supposed to take samples from different locations on the bed to do that?

Veti

homeall does not do bed leveling.

G29 does mesh bed leveling

Phaedrux

See here: https://duet3d.dozuki.com/Wiki/Using_mesh_bed_compensation

The ender 3 doesn't have any way to "level" the bed other than the adjustment screws on the bottom of the bed. So getting those leveled to begin with is important. Mesh compensation takes probe readings from many points on the surface of the bed and creates a height map to automatically adjust the Z height during a print to keep the nozzle the same distance from the bed.

An important part of the z probe setup is getting the offsets correct. See here: https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

didi767

@Phaedrux
Changed the Z speeds and it looks much better.
Regarding the extruder, I tried to do the configuration using the guide but my extruder doesn't extrude anything if I look carefully at the motor it seems like the wheels/brass things are turning a bit and then turning back to the same spot as before and the filament is not moving anywhere. any suggestions on that?

Phaedrux

Is the hotend heater on and at temp?

didi767

@Phaedrux
It was the cable... I switch with the X to check and the motor works.
I ordered an extra cable, in the meantime I'll calibrate the extruder and follow the guide for the bedmesh and update later.

didi767

Hey guys,

so I managed to calibrate the extruder and to create the mesh grid successfully. I can finally see progress with this upgrade (thanks to you!). I'm still waiting for the cables to arrive and finally close the case with all the wiring appropriately.
Is there anything specific that I should add to the configurations?
I've noticed that I can set the amount of amps to each motor, should I modify this or just leave it as 800 800 900?

thanks!
Didi

Veti

@didi767

set them to 75% of the rated current.

i think the ender motors are 1A so 800 is close enough.
touch them during a print to see if they dont get to hot.

Phaedrux

800 sounds fine for the Ender, though some people find the motors noisy, so lowering the current a bit might help, though you're limited to 100ma steps and if you go too low you risk heavy axis like Y skipping steps. I wouldn't go lower than 600.