Issues after prime

Heartleander81

@phaedrux
ok i understand that and is understandable. but why is he doing this? in the start code it runs great in the M83 and after that I no longer give an M82 command. I switched Simplify3D to M83 and the sliced code also looks like it.

Phaedrux

@heartleander81 said in Isusses after prime:

M955 P20.0 I10

Can you try commenting out the accelerometer command?

Heartleander81

@phaedrux
Have I do yesterday. But with M82.

I can try it in 30 min.

Heartleander81

@phaedrux

Is the same

Phaedrux

your video is very short and a little confusing to me. It looks like it goes into slow motion? Is that to show the stuttering? Can you upload a new video that's a bit longer and doesn't go to slow mo? Describe for us exactly at what point each piece of gcode is executing from the time you hit print to the time you see the problem.

Heartleander81

@phaedrux

https://youtu.be/lhOgw-MZr2o

This Video is without slow motion and with Sound.

G90
M83
M106 S0
M140 S50
M190 S50
M104 S240 T0
M109 S240 T0
T0
M98 P"startGcode"
G92 E0.0
; process CR3D 0.4
; layer 1, Z = 0.200
T0
G1 E-0.6000 F1200   ; if I comment out this line then the error is not there.
; feature skirt
; tool H0.200 W0.440
G1 Z0.200 F600
G1 X19.489 Y53.567 F12600
G1 E0.6000 F1200
G1 X280.511 Y53.567 E8.9768 F1800
; layer end
T0
M98 P"endGcode"

G32
G29 S1 P"heightmap.csv"
G1 X5 Y5 Z30 F6000.0 
G1 E40 F600
G1 E40 F200
G1 Y20 F2000
G1 Y50 Z0.2 F2000
G1 Y90 E20 F300
G1 Y120 F1200

Heartleander81

@phaedrux
Is that video better?

Phaedrux

Yes I think so. At what point in the gcode stream does the video start?

It looks like it's just finished homing, or is that it finishing G32?, moves to the corner, purges some filament, then draws a purge line, and moves to start another line across the bed.

What is in M98 P"startGcode" ?

Is it this?

G32
G29 S1 P"heightmap.csv"
G1 X5 Y5 Z30 F6000.0 
G1 E40 F600
G1 E40 F200
G1 Y20 F2000
G1 Y50 Z0.2 F2000
G1 Y90 E20 F300
G1 Y120 F1200

@heartleander81 said in Isusses after prime:

G28Z

What do you have in homez.g?

Heartleander81

@phaedrux
Yes that is my startcode

The video start after finish G32.

After the the Purge line goes X to 110 and from ther Point start the slicing Part with G1 E-0.600 F1200 and on the next move to print Point start ist the issuse.
I think I See at dwc Motor E run to Zero and back without 0.6mm
From E100 to E0 to E99.4

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Wed Aug 26 2020 16:14:58 GMT+0200 (Mitteleuropäische Sommerzeit)

;G91                ; relative positioning
;G1 Z5 F600    ; lift Z relative to current position
;G90                ;
G1 X129.4 Y139.4 F3000   ;
M401
G30                ; Do a single probe to home our Z axis
M402
;G90

; Uncomment the following lines to lift Z after probing
;G1 X0 Y0 F6000       ; lift Z relative to current position
;G1 Z5 F600

Heartleander81

My homez is old. I know i must clean it.

Phaedrux

By the way, when using a BLtouch you do not need to use M401/M402 explicitly. The G30 commands will deploy and retract as needed.

The only thing I can think of for the extrusion move is that your E speeds may be a bit aggressive?

M566 X1250.00 Y1250.00 Z200.00 E1000.00 ; set maximum instantaneous speed changes (mm/min)

M203 X30000.00 Y30000.00 Z600.00 E16000.00 ; set maximum speeds (mm/min)

M201 X3000.00 Y3000.00 Z200.00 E2000.00 ; set accelerations (mm/s^2)

Perhaps F1200 is too much for the extruder? It seems fairly low speed though for retraction, so I'm not sure.

I'm kind of at a loss. Is the problem causing any actual detriments?

Heartleander81

@phaedrux

Any other Propeller use 50-70mm/s retract speed. There is my 20 very slow.

Without filament I can speed the extruder high. With optimal print Temp and filament can I extrude ~20mm/s.

I have this 20mm/s use the last 6-8 month without Problem.

Any time I have step lost on X and Y

Heartleander81

https://youtu.be/h9OgIKBjpsM

If you look at this video you can see how the car brakes hard by braking and starting again and then continues jerking, and the belts wobble a lot. Depending on how it vibrates, the motors lose steps and I no longer print in the middle. In the long run, the jerking is not healthy for the whole mechanics

Heartleander81

@phaedrux

But the question is why run the extruder to 0 and back to 99.4 when M83 is Configured?

When I All write to M82 and slice M82 is the same problem. At this one Point reset the firmware not the extruder.

Heartleander81

That Video is with a another Purge line.

There is with step lost on X and Y. The print must start on the middle on x150 Y150 but is in the left back corner.

https://youtu.be/UaVkC-F1cfM

Phaedrux

Have you tested in standalone mode yet without the SBC?

https://duet3d.dozuki.com/Wiki/Getting_Started_With_Duet_3#Section_Running_in_standalone_mode

Heartleander81

@phaedrux no. I dount have standalone configured

Phaedrux

As process of elimination it may help to know if the problem still presents in standalone mode.

You can copy your current config files onto a fresh SD card that has the folder structure and DWC files present and use that SD card in the Duet. That link describes in more detail.

Heartleander81

@Phaedrux
Ok have I do.

Heartleander81

@phaedrux
The same on standalone