OctoPrint Delta Calibration Plugin!

[morgandc]

Octoprint 1.2.16
Firmware 0.92.2 dated 12/9/16

For some reason the plugin says I am not running a SeeMeCNC printer:

Upgraded the firmware and installed the OctoPrint plug, restarted octoprint, ran a g29 and used the OctoPrint pluging to load eeprom and Delta Calibrate. Watched the calibration and saved the settings. Printed a test print. Wasn't sure I liked the results and went to run it again.... Now it says I am not running a SeeMeCNC printer. Power cycled the printer and Pi, same result.

Any other ideas?
Thanks,
-Dwight

[mhackney]

Read my post above on the same issue. Turns out using the release branch and not the dev branch worked for me. You don't state which branch you used, try release if you got this with dev.

[geneb]

Gee, I dunno. Four blood cells high is kind of high, dontcha think?

g.

[morgandc]

Used release Branch, I could upgrade OctoPrint to 1.3.0 I was wanting to do that anyways.

[ToddZilla]

morgandc, I had the same problem. Following geneb's advice earlier in the thread, I disconnected and reconnected the printer to OctoPrint (using the connection panel in the upper left of OctoPrint) and after that it worked fine.

[DerStig]

Okay it's working, well it worked once I tired it a second time and it kicked apos error and disconnected.

Having said that what sort of accuracy are we looking for? My one time got me to .04mm error across the build surface

.04mm converts to .0015748". Human hair varies in diameter, but the average is around .07mm, or .0027559".

So the real question is, Are you happy with .04mm?

MHackney has .02mm error I want that!

[morgandc]

Didn't help me

[edit] after lots of reboots, disconnects,reconnects while working on other stuff I went back and checked and the plugin now though I was the right printer again. Since I am already level, I didn't mess with it further.

[quote="ToddZilla"morgandc, I had the same problem. Following geneb's advice earlier in the thread, I disconnected and reconnected the printer to OctoPrint (using the connection panel in the upper left of OctoPrint) and after that it worked fine.[/quote]

[DodgeDerek]

For other folks' reference, I have had success with this using the master branch of the Firmware (latest version).

I have a V2 with a Prometheus V2, the 713Maker mount and the accelerometer probe board attached with my printed mount. My only caveat is that I had to modify Gene B's code to reduce the probe point radius by 5mm to clear my enclosure.

I haven't run a large scale calibration print, but so far everything looks just about perfect with a few small prints I have run. Hopefully this will appease my need to tinker with the printer until I order a Duet board and blow everything apart again.

Thanks to everyone who has contributed to this. Bravo

Derek

[geneb]

Keep in mind that if you're unable to get OctoPrint to work properly, you can use the manual calculator that pouncingiguana created: https://www.seemecnc.com/pages/delta-calibration-wizard - this is essentially a manual version of what my plugin does - it's very easy to use.

g.

[pouncingiguana]

I didn't create it so much as grab the code and start running before the alarms went off. It's DC42's code underneath, I just took out a few steps and hardcoded some stuff specific for our printers to make it a little easier for people to use. So far it's been working great

[pswindler]

it works great! thanks for putting this together for us poor fools. great work all!

[ido3dprintz]

Like the initial "script" we would run to level the v3, I was told that I didn't need to run it every single time I printed. I have recently updated to the latest firmware, and run the awesome calibration wizard from DC42.

I see this OctoPrint plugin and understand it is the same as manually plugging it all in on the webpage.

The question is: Is this the NEW "script" process? Meaning it is run every now and then, or when bed-level is in suspect?
Does this process completely replace my old v3probing.gcode:

; Rostock Max v2/v3 Delta Auotcalibration Script
G69 S2 ;Endstop Calibration
M117 ENDSTOPS CALIBRATED
G68 ;Horizontal Radius Calibration
M117 HORIZONTAL RADIUS CALIBRATED
G30 S2 ;Z height calibration
M117 Z Height Calibrated
M500 ;Save values to EEPROM
G4 S2
M117 SAVING CALIBRATION

Guidance is always appreciated.

[pswindler]

the new plugin can replace the old probing code, but it is suggested that you run the old probing code before running the new plugin only to set the z height, for better reliability. if your z height is already good, then you really never need the old probing code. the new plugin just finds the best possible plain to match your bed, its not perfect but far better then the old code

[ido3dprintz]

the new plugin can replace the old probing code, but it is suggested that you run the old probing code before running the new plugin only to set the z height, for better reliability. if your z height is already good, then you really never need the old probing code. the new plugin just finds the best possible plain to match your bed, its not perfect but far better then the old code

Thanks!

[geneb]

The only "probing code" you need to run outside the plugin is G29. That replaces the calibration script.

g.

[wshiwsbrding]

3. Read README.md. It's not hard, it's on the front page of the repository. Then read it AGAIN. Maybe, just maybe, read it yet AGAIN.

4. If you don't have an HE280 equipped printer (or at least the fancy probe board), THIS WILL NOT WORK. The calibration code depends on responses generated by the SeeMeCNC fork of Repetier Firmware and the attached probe. That being said, this should work on any delta so equipped. (Upgraded v2, Orion, Eris, etc.)

Here's the link: https://github.com/geneb/OctoPrint-Delta-Calibration

You can install it via pip (see the readme!) (for you octopi users, pip is in /home/pi/oprint/bin/), or you can download the zip file and unpack it into /home/pi/.octoprint/plugins. I recommend you use pip as it's simply easier to deal with, and subsequent pip installation attempts will pull a new version if it's available.

geneb,

This is all the readme says: To use this plugin, you can install it using pip from a shell prompt: pip install https://github.com/geneb/OctoPrint-Delt ... master.zip

I dont know what that means. Do I copy everything after the : and paste it in my shell prompt?

Thanks for your work on this and help understanding what do to with it!

[geneb]

That's essentially it, yes. I updated the README to add specific instructions for OctoPi users.

g.

[TN Yankee]

I was new to OctoPrint as of 2 days ago, but installed it specifically because of this plug-in. What I knew of the plug-in was what I had read here in a couple threads, and hadn't even visited the GitHub page yet. I downloaded the zip file from a link here, and used the plug-in manager in Octoprint to browse to my saved copy and install it. It worked smoothly.

I'm waiting for a new thermistor at the moment so I haven't been able to test it, but nevertheless a HUGE thank you to geneb for pulling this all together!

[geneb]

You're quite welcome!

g.

[Dale Eason]

geneb,
I too want to thank you for the work you did on this. It is a great help. First time I've ever been able to print large footprint items on my V2 upgrade to HE280.

I notice that sometime at the end of the calibration plugin it does not home the machine and sometime it does. Do you know the reason for that?

When I first ran the process I was unsure about the load eeprom button. I was afraid it was going to load eeprom on the machine. I'm use to the term read eeprom when reading from the eeprom on the machine. Don't know if others find that confusing as well.

Dale

[geneb]

Didn't read the README, did you?

Click the Load EEPROM button and then click the Begin Delta Calibration button.

You may run it as many times as you like, but you MUST click the Load EEPROM button before you begin the calibration sequence! If you fail to do this, the calibration routine will NOT know what the current parameters are and you'll get poor, bad, or moderately catastrophic results.

The code should send a G28 before the calibration starts and once after it's done. However, due to the vagaries of JavaScript, who knows.

g.

[Dale Eason]

Hi, geneb,
Yes I did read the Read me thank goodness for it because that is when I decided it was ok to press it. However like I said if it was me I would have labeled it read eeprom or download from eeprom but not load eeprom. I'm an old computer and software writer guy so I'm use load being a synonym for write in the context it was used.

Still, thanks for what you did.

Daleff

[geneb]

The context is load/save. You're over-thinking a button name.

g.

[Dale Eason]

Well now a problem has happened. The short story is I cleared the eeprom and reloaded firmware to the machine. Now the plugin claims it is "Not" a SeeMeCNC 3D printer.
The LCD shows FW version 0.92.2 Rostock Max v3

I tried to find where in the plugin code that test is made but I failed. I can not figure out why it thinks the machine is not the right one. A m115 command also returns Rostock Max v3.

Update: Never mind after a restart of OctoPrint it now thinks the printer is correct. Sorry for the post

Dale

[WZ9V]

So my summary of the discussion.

In OctoPrint terminal
- G28 ; home
- G29 ; firmware calibration
- G28 ; home

Switch to OctoPrint plug-in
- load eeprom
- run calibration
- repeat both steps until converged

Correct?