Octoprint question

Hey all,

I've decided to setup my R1+ with Octoprint (on a RasPi 3), and basically everything has been working great so far except the actual printing part.

Whenever I try to print, either using gcode sliced on Octoprint, or gcode I upload to Octoprint myself from a known good Cura setup on my PC, the same thing happens: The printer does the bed leveling process, and as soon as it finishes the last spot, the print head moves up a bit and then it just stops. The extruder cools down, the bed stays hot, and the printer is unresponsive after that.

Any thoughts?

Is there a known good Printer Profile for Octoprint someone could share with me?

Thanks in advance for any tips.

 

Here's what the gcode terminal says (the first serveral lines are the auto-leveling):

Send: N11 G29*34
Recv: Bed x: 15.00 y: 20.00 z: -0.63
Recv: Bed x: 110.00 y: 20.00 z: 0.03
Recv: Bed x: 205.00 y: 20.00 z: 0.37
Recv: Bed x: 205.00 y: 125.00 z: -0.14
Recv: Bed x: 110.00 y: 125.00 z: -0.25
Recv: Bed x: 15.00 y: 125.00 z: -0.84
Recv: Bed x: 15.00 y: 230.00 z: -0.29
Recv: Bed x: 110.00 y: 230.00 z: 0.18
Recv: Bed x: 205.00 y: 230.00 z: 0.41
Recv: Eqn coefficients: a: 0.00 b: 0.00 d: -0.70
Recv: planeNormal x: -0.00 y: -0.00 z: 1.00
Recv: ok
Send: N12 G1 Z15.0 F9000*20
Recv: echo:endstops hit: Z:0.41
Recv: ok
Send: N13 G92 E0*117
Recv: ok
Send: N14 M109 S{print_temperature}*41
Recv: T:162.3 E:0 W:?
Recv: T:161.2 E:0 W:?
Recv: T:160.2 E:0 W:?
Recv: T:159.4 E:0 W:?
Recv: T:158.4 E:0 W:?
Recv: T:157.6 E:0 W:?
Recv: T:156.7 E:0 W:?
Recv: T:155.7 E:0 W:?
Recv: T:154.8 E:0 W:?
Recv: T:154.1 E:0 W:?
Recv: T:153.1 E:0 W:?
Recv: T:152.4 E:0 W:?
Recv: T:151.5 E:0 W:?
Recv: T:150.6 E:0 W:?
Recv: T:149.8 E:0 W:?
Recv: T:149.0 E:0 W:?​

And it just continues like that. I sent the exact same gcode file via MatterControl and it prints just fine.

Any thoughts would be appreciated!

 

Hmm, I was actually thinking the opposite, given that for this test I used MatterControl to slice the STL file and save the gcode, then simply uploaded that gcode file to Octoprint. I figured it must be the printer config somehow, or a communications problem.
Plus the same gcode file works if I send it via MatterControl.

Going to try using Octoprint to print the same gcode file from the printer's own SD card, rather than over USB. And I will check the Octoprint forums, too. Thanks!

 

It occurs to me that perhaps we're both right? What's the only gcode octoprint would be bringing to this party? The start/end snippets in the printer profile (which I grabbed from my Cura setup)... and lookee here:

M104 S{print_temperature}
M190 S{print_bed_temperature} ;preheat bed and wait
G21 ;use metric values
G90 ;use absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with fan off
G28 X0 Y0 ;home X & Y
G28 Z0 ;home Z
G1 Z5 F5000 ;lift nozzle 5mm
M565 Z0.7 ;use 1.0 Z-offset
G29 ;run autolevel
G1 Z15.0 F9000 ;raise nozzle 15 mm
G92 E0 ;zero the extruder
M109 S{print_temperature} ;wait for nozzle to heat
M117 Printing... ;print message on LCD

I think I'll try removing that line, but I wonder if there are "official" Robo3D Cura start/end gcode I should be using? I think I found these on a forum somewhere...

 

I know this doesn't help too much, but I slice my STL's with S3D and upload them/print with no issues at all.

Yes, remove that line you mentioned "M109 S{print_temperature} ;wait for nozzle to heat" and these two :
M104 S{print_temperature}
M190 S{print_bed_temperature} ;preheat bed and wait

Octoprint doesn't know how to use that, since the temperatures are in the gcode files. I had the same issues when I migrated from mattercontrol.

 

I had similar issues using Pronterface and any slicer with the stock firmware. I upgraded to 1.1.0 RC6 and have not seen it since. YMMV, if your not scared off by new firmware I'd try that and did.

 

Hmm, okay. Thanks! My printer is only a few months old, I haven't even checked to see if new firmware is available.

As for the problem, I thought I'd update this: it works as long as I take the temperature command out of the start gcode. No idea why!

 

Keep n mind the firmware update I referenced is not an official release of Marlin yet. It is Release Candidate 6 (RC6) and I expect at the rate they are patching things there will be a few more RC versions before the official 1.1.0. It's been working well for me and better than what came on it out of the box.

 

Understood! Thanks for the suggestion.

 

Thanks for the info. Out of curiosity, are you saying that the temps are baked into the gcode? So if I have a gcode file I sliced a while back, and want to print it again but with a different kind of filament, I need to re-slice it with the correct filament selected?
I guess that might be a newbie question...

 

Most slicers will set their own temperature control as long as they don't see it in your start g-code. If they see it in your start g-code they leave it all up to you. If you want to see what your slicer would do behind the scene, empty out your start g-code, slice something, and then view the g-code in your favorite text editor.

If you think it will help, I can post my start g-code for Cura that has been working well for me. I don't promise it's commented well though. I reverse engineered it from the MatterControl generated g-code and then started messing around.

 

That'd be great, thanks much. I'm using some I found in a forum, and managed to get a good print yesterday after I removed all the temperature stuff from it. It would still be nice to compare.

 

My Cura 15.04.5 settings

--start.gcode
;Sliced by Cura 15.04.5 at: {day} {date} {time}
;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}
;Bed temperature: {print_bed_temperature}
;Extruder temperature {print_temperature}
;Put printing message on LCD screen
M117 Initializing
M190 S{print_bed_temperature}
M109 S{print_temperature}
G21
G90
M82
M107
M117 Auto Bed Leveling
G28
G29
G1 Z10 F{travel_speed}
G92 E0
G1 F200 E3
G92 E0
G1 F{travel_speed}
M117 Printing

-- end.gcode
M107
M104 S0 ; turn off extruder
M140 S0 ; turn off bed
G1 X10 Y200
M84 ; disable motors
M117 Done
;{profile_string}