Prusa Mini and Octoprint  

RE: Prusa Mini and Octoprint

Posted by: @stephensmith

Posted by: @mike-io

I can't get OctoPrint to connect to my Mini. I've got a fresh install on a rPi4, connected to the micro jack on the Mini and I keep getting the following error. What am I missing?

Changing monitoring state from "Offline" to "Detecting serial port"
Serial port list: []
Changing monitoring state from "Detecting serial port" to "Error: Failed to autodetect serial port, please set it manually."
Failed to autodetect serial port, please set it manually.

I had to test 4 Cables before I found one that worked..

I had this issue when I disabled the Wifi and Bluetooth my Pi4, Apparently it messed with the USB as well. After I re-enabled it , it worked again. I have mine hardwired so I wanted to save resources by turning off the unnecessary things, but it caused that issue for me.

RE: Prusa Mini and Octoprint

Posted by: @stephensmith

Posted by: @mike-io

I can't get OctoPrint to connect to my Mini. I've got a fresh install on a rPi4, connected to the micro jack on the Mini and I keep getting the following error. What am I missing?

Changing monitoring state from "Offline" to "Detecting serial port"
Serial port list: []
Changing monitoring state from "Detecting serial port" to "Error: Failed to autodetect serial port, please set it manually."
Failed to autodetect serial port, please set it manually.

I had to test 4 Cables before I found one that worked..

Thank you for the tips! I switched the cable and it came right up.

RE: Prusa Mini and Octoprint

And then I made the mistake of rerouting my usb cable, unplugging it in the process and now that cable won't connect.

RE: Prusa Mini and Octoprint

@mike-io

I believe there are issues with the auto port detect logic in Octoprint, Gina suggested this https://github.com/markwal/OctoPrint-PortLister plugin as a work around.

RE: Prusa Mini and Octoprint

Posted by: @towlerg

@mike-io

I believe there are issues with the auto port detect logic in Octoprint, Gina suggested this https://github.com/markwal/OctoPrint-PortLister plugin as a work around.

Maybe. Though I just plugged and re-plugged in 4 different cables and checking if the pi had recognized a device being plugged in using dmesg and no cable was working until contrary to all advice about short cables with shielding my longest cheapest looking cable just connected. 

RE: Prusa Mini and Octoprint

@dhaya

Please be aware that this resets your Z live adjust to ZERO. You should also introduce its value here to avoid this

RE: Prusa Mini and Octoprint

I've been using Octoprint on my Mini fine with a RPi3A+. Only thing i cant seem to get to work is an eta or print time left in Octoprint. Ive tried various plugins but non seem to work. Anyone got this to work? Thanks

RE: Prusa Mini and Octoprint

@michae-15

I wrote this plugin - it works for me. Let me know if you have any issues with that.

https://plugins.octoprint.org/plugins/prusa_mini_eta/

RE: Prusa Mini and Octoprint

@michae-15

Me too.  I cannot get the ETA to print on the mini screen.  

RE: Prusa Mini and Octoprint

In my case, "Z Live Adjust" keeps resetting to ZERO, everytime I connect to Octoprint

RE: Prusa Mini and Octoprint

@ignacmc

Is it your Live Z, or is it your current Z height that resets to Zero? 

On My Mk2S, when Octoprint connects it effecttively 'resets' the   printer controller, similat to pressint the reset button, or turning the printer on... 

At this time the controller has absolutely no idea where the extruder is... 
For safety the controller assumes the extruder is at Z = 0.0mm  and it will refuse to go any lower, unless you, or Octoprint, initiate a Home Z axis, or a Home all axis command

the same will happen if you connect to the printer using Pronterprint

this is design intent not a Bug. 

regards Joan

RE: Prusa Mini and Octoprint

It is my "Live Adjust Z" which resets to ZERO. Being the actual value after First Layer Calibration around -1.050, that means that it starts printing almost on air if I don't rush to compensate it manually. The "Z live Adjust" value after calibration was persistent after turning the machine off and on again, so I don't understand what Octoprint does. It cannot be a design intent since before any print it always homes all axis and knows exactly where it is, and with an inductive sensor there is always a Z compensation value that you should not erase and reset to zero.

This never happens to me when I print on the Prusa Mini from USB stick. The Live adjust Z is not reset.

The thing is that I could swear that my first print with a "vanilla" OctoPrint was successful without resetting the said value. After that I installed some plugins, run software update and then the value gets reset to zero with every connection....quite strange

Thanks for your help

Ignacio

RE: Prusa Mini and Octoprint

Posted by: @charles-h13

@michae-15

Me too.  I cannot get the ETA to print on the mini screen.  

Im not really interested in getting the print time on the LCD screen of the mini. But the webinterface of octoprint gives no ETA or remaining print time. Did you get that to work?

RE: Prusa Mini and Octoprint

@vookimedlo

Thanks. That works for the approx time yes. Is there a way to get the print time left to work?

RE: Prusa Mini and Octoprint

@vookimedlo

I was using the wrong plugin. Installed yours via the URL method and it’s working!

RE: Prusa Mini and Octoprint

@ignacmc can you list the firmware version and what Octoprint plugins you have installed?

RE: Prusa Mini and Octoprint

• OctoPrint: 1.4.0
• Delta Micro Calibrator Plugin: 1.0.4
• DetailedProgress Plugin: 0.2.5
• DisplayLayerProgress Plugin: 1.22.1
• DisplayProgress Plugin: 0.1.3
• EEPROM Marlin Editor Plugin: 1.2.1
• OctoPod Plugin: 0.2.6
• PrusaSlicer Thumbnails: 0.1.2

RE: Prusa Mini and Octoprint

@michae-15

I am very glad to hear that! 😉

RE: Prusa Mini and Octoprint

Posted by: @ignacmc

• OctoPrint: 1.4.0
• Delta Micro Calibrator Plugin: 1.0.4
• DetailedProgress Plugin: 0.2.5
• DisplayLayerProgress Plugin: 1.22.1
• DisplayProgress Plugin: 0.1.3
• EEPROM Marlin Editor Plugin: 1.2.1
• OctoPod Plugin: 0.2.6
• PrusaSlicer Thumbnails: 0.1.2

I would disable EEPROM Marlin Editor and Delta Micro Calibrator plugins and see if that helps.

RE: Prusa Mini and Octoprint

Yes, EEPROM Marlin Editor was the culprit!!!! Now there is no reset 😉