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fighting with M808 Loop

Posted by Alvon3DprinTor 
fighting with M808 Loop
September 24, 2022 10:06AM
Hi everybody,

I'm trying to make a 45° extension module to make little infinite printing just when I need it.

see : Youtube Short : 45°deg GA3D.tech M808 test



I've a few problems to understand exactly what is happening with the M808 loop when it works, and when not

This example works :


G92 X0 Z0 Y0 E0 ; set start position to 0 0 0 Reset Extruder

M140 S0
M105
M190 S0
M104 S0
M105
M109 S0

M808 L10        ; Set Marker to repeat 10 times
M300 P100 S440  ; Beep!
M300 P10 S0     ; Silence
M808            ; End Marker

M808 L10
G92 X0 Z0 Y0 E0 ; set start position to 0 0 0 Reset Extruder
G1 F9000 X0 Y0
G1 F9000 X30 Y0
G1 F9000 X30 Y-120
G1 F9000 X10 Y-120
G1 F9000 X30 Y-120
G1 F9000 X30 Y0
G1 F9000 X0 Y0
M808

the following one stops after one loop, I have no idea why (after 30 try in all direction I'm lost...)

If you are experienced with that, or If you see my stupid mistake it would makes me very happy smiling smiley, thank you very much in advance for advices and remarks.

I use marlin 2.1.1 on a good old ramps 1.4 with an arduino meg 2560



;FLAVOR:Marlin
;TIME:4286
;Filament used: 2.25787m
;Layer height: 0.2
;MINX:45.274
;MINY:23.901
;MINZ:0.2
;MAXX:127.694
;MAXY:54.991
;MAXZ:77.2
;Generated with Cura_SteamEngine 5.0.0
M140 S0
M105
M190 S0
M104 S200
M105
M109 S200

G92 X0 Z0 Y0 E0 ; set start position to 0 0 0 Reset Extruder
;Extruder Relative mode
M83
;LAYER:31
;TYPE:WALL-OUTER
;MESH:profil002a.stl




M808 L500
G92 X0 Z0 Y0 E0; set start position to 0 0 0 
M83
M109 S200
G1 F3000 X0 Y0
;TYPE:WALL-OUTER
;MESH:profil003a-Cube.stl
G1 F600 X2.4 Y0.0 E-94.72792
G1 X0.0 Y0.0 E0.11974
G1 X0.0 Y9.4 E0.46896
G1 X2.4 Y9.4 E0.11974
G0 F7500 X1.8 Y-22.966
;TYPE:WALL-INNER
G1 F600 X1.8 Y0.6 E0.4091
G1 X0.6 Y0.6 E0.05987
G1 X0.6 Y8.8 E0.4091
G1 X1.8 Y8.8 E0.05987
G0 F7500 X1.2 Y-22.966
G1 F600 X1.2 Y1.2 E0.34923
G0 F7500 X1.21 Y1.2
G1 F2700 E14.05462
;MESH:NONMESH
G0 F300 X1.21 Y1.2
G0 F7500 X1.72 Y8.72
G1 F2700 E19.05462
G0 F7500 X2.4 Y9.4
;Z belt triggering
G1 F3000 X0 Y0
G1 F3000 X30 Y0
G1 F3000 X30 Y-120
G1 F3000 X10 Y-120
G1 F3000 X11 Y-120
G1 F3000 X15 Y-120
G1 F3000 X20 Y-120
G1 F3000 X30 Y-120
G1 F3000 X30 Y0
G1 F3000 X0 Y0
M808

Edited 1 time(s). Last edit at 09/24/2022 10:11AM by Alvon3DprinTor.


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