OctoPrint & Cura - Printhead too high on prints....

theres no z offset in any of your start up scripts? Never used Octo but I'd imagine you would need a z offset. also may want to check your z endstops to make sure they arnt out of whack.

 

As I mentioned to you before get rid of all scripting in OctoPrint the 7 sections in OctoPrint >> Settings >> GCODE Scripts should all be blank. You should take care of any scripting needs all within Cura. Because of the way you have this set up there are commands that work at cross purposes.

Here is what is happening when you start a print.

1. OctoPrint homes all axis (also unless you are homing a specific axis just use G28 and not G28 X0 Y0 Z0)
2. OctoPrint lifts the nozzle 5 mm
3. OctoPrint sets extruder temp to 210°C then bed temp to 60°C
4. Octoprint homes again
5. OctoPrint performs the auto-leveling routine
6. Cura homes all axis a third time (do you really need to home three times)
7. Cura lifts the nozzle 5 mm
8. Cura sets the temperature of extruder and bed to 210°C and 60°C respectively
9. Your actual print starts.

Can you see the issue here?

 

In Cura your start up code is included in every single model you slice with Cura. So there is no need to 'Initialize' anything in OctoPrint.

Cura Start code should probably look something like this:

Code:

G90    ; movement absolute values
M82    ; extruder absolute values
G28    ; home all axes
G29    ; auto-level
M565 Z-1.0    ; Z-Offset, adjust as necessary
M190 S{print bed temperature}    ;set bed temp and heat
M109 S{print temperature}    ;set extruder temp and wait until heated
M117 Printing...    ;put a message on the LCD status line

Honestly you are making it way more complicated than necessary. Remember the simplest processes are usually the best ones.

In your Cura end code don't forget to turn off the bed temperature also, add a M140 S0 in there somewhere

 

@CDitty if you are interested I could upload my version of Raspian Jessie with OctoPrint installed. It is still configured for DHCP. I actually configure my entire network for DHCP and use MAC filtering at the DHCP server to divvy out Static Leases to machines that need to be in permanent locations (media server running PLEX, network laser printer, print servers like OctoPrint). Also it is not configured for Bonjour since I only use Windows and a tiny amount of Linux and Apple abandoned Bonjour for Windows ages ago. HAProxy does not have authentication set up, but since you configured yours for outside access already you likely know how to get that done. I have a rPi camera module so mjpeg-streamer is set up and configured properly. On a 4GB microSD you will have approximately 50% free space after you expand the file system (on 2GB there is about 14KB left).

I tried to build it so there is nothing extra/unnecessary. OctoPrint has Display Status and Printer Statistics and that is all the additional plugins.

 

I have a 2 and a 3 and it works on both, I used OctoPrint 1.4 devel

Here is the hardware I used
rPi2, Waveshare 3.5" A (SPI, 320 x 480, TFT) the drivers are loaded for all their screens, I hardwire so no WiFi dongle, rPi camera module v2 (8mp).
rPi3, Waveshare 4" (HDMI, 800 x 480, IPS)

 

I think it's too big to just post here, PM me you email address and I will send it to you later today.

I also think the move to Jessie eliminated a lot of the specific rPi2 v. rPi3 stuff.

 

Robo posted a few Cura 15.04.6 profiles on their Github just a few days ago, these could be used for an OctoPrint setup by putting them on the rPi in the appropriate directory. https://github.com/Robo3D/Slicing-Profiles