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Doodle3d and starting a print


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Posted · Doodle3d and starting a print

I have a strange problem. When I have the doodle3d connected to my UMO printer and I print via wifi the bed heating starts and after heating it asks for "wait for user". At that time the printer will sit idle with a headed bed on temperature but a cold hotend. When I press the button it starts printing. At that time the hotend is still cold so I abort the print. When I print again (now my heated bed is hot) it start heating the hotend and everything is ok. So my workarround is heat the bed to target temp and then start printing via wifi (cura).

The strange thing is that when I print a file from the SD card (doodle3d is connected but idle) it also asks for "wait for user" but now when the hotend is heated up so bed heating goes fine. I press the button and I have a good start. If I disconnect the doodle3d I can print without beeing asked for "wait for user" message. In this case it just heats the bed and then the hotend just like instructed in the gcode.

Here is my start code:

;Basic settings: Layer height: {layer_height} Walls: {wall_thickness} Fill: {fill_density}

;Print time: {print_time}

;Filament used: {filament_amount}m {filament_weight}g

;Filament cost: {filament_cost}

M190 S{print_bed_temperature} ;Uncomment to add your own bed temperature line

M109 S{print_temperature} ;Uncomment to add your own temperature line

G21 ;metric values

G90 ;absolute positioning

M82 ;set extruder to absolute mode

M107 ;start with the fan off

G28 X0 Y0 ;move X/Y to min endstops

G28 Z0 ;move Z to min endstops

G1 Z15.0 F{travel_speed} ;move the platform down 15mm

G92 E0 ;zero the extruded length

G1 F200 E5 ;extrude 5mm of feed stock

G92 E0 ;zero the extruded length again

G1 F{travel_speed}

;Put printing message on LCD screen

M117 Printing...



I would expect that the same start code is send when printing in cura using the wifi.


So my question is what triggers this "wait for user" message when the doodle3d is connected? The "wait for user" command is not in the gcode. I printed the same object on the sd card and with doodle3d connected I get the message and without the doodle3d I don't (first I thought it was the updated marlin software but that is not the case since without the doodle3d the behavior is as specified in the gcode).



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    Posted · Doodle3d and starting a print

    I have figured the startup for doodle3d over wifi out. It seems that you have to remove the comments after the M190 and M109 commands.

    The "wait for user .." when printing from sd card and a connected doodle3d is still there.


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