Re: OctoPrint issues and tips
I can’t get OctoPrint to work from a Raspberry Pi connected to the MK3 EINSY board. The Pi is configured with the Prusa image of OctoPrint. When I power it up by itself (with a DC adapter) it works fine, and I am able to successfully connect to the server with a browser. When I connect the Pi via the USB cable to the printer it also works fine, and I can successfully control the printer from the browser. However, when I attach the Pi to the EINSY I can’t connect to the OctoPrint server (and it never shows up with an IP address in my local network). Also the green light on the Pi never turns on.
I posted this issue on another Facebook forum and someone suggested that I test the pins on the Pi to see if I'm getting the fully expected 5V. So I connected the Pi by itself to the DC 5V adapter and with a multimeter tested the voltage on pins 4 and 6. I got 5.26V which seemed perfectly fine. However, when I tested the same pins while Pi was connected to the EINSY board (and powered by the printer) I got a reading of 4.11V - which seems low.
So is the initial problem being caused by a bad EINSY board that isn't providing enough power to the Pi, or is something else going on?
Appreciate any feedback you can send my way. Many thanks!!
Re: GPIO Header Pins
It seems the GPIO header pins recommended by Prusa to connect the RBP 0 W are specced for 18mm total length and some people are having a hard time finding those so I thought I would post what I used. Worked perfectly
Digikey part number 3M156449-14-ND
https://www.digikey.com/products/en?keywords=3M156449-14-ND
I know the picture on DigiKey shows 2 2x2 headers but you get a single 2x7 that's fully populated. The pins are actually closer to 19mm but the extra length doesn't hurt anything. After removing the 8 unnessary pins you will have to shift the remaining 6 a bit through the insulator so that you have 12.5mm on one side.
Anyway. Hope this helps someone.
Re: OctoPrint issues and tips
It seems the GPIO header pins recommended by Prusa to connect the RBP 0 W are specced for 18mm total length and some people are having a hard time finding those so I thought I would post what I used. Worked perfectly
Digikey part number 3M156449-14-ND
https://www.digikey.com/products/en?keywords=3M156449-14-ND
I know the picture on DigiKey shows 2 2x2 headers but you get a single 2x7 that's fully populated. The pins are actually closer to 19mm but the extra length doesn't hurt anything. After removing the 8 unnessary pins you will have to shift the remaining 6 a bit through the insulator so that you have 12.5mm on one side.
Anyway. Hope this helps someone.
Recommended by Prusa support: https://www.tme.eu/gb/details/zl209-20p/pin-headers/connfly/ds1021-1_20sf1-5/
Re: OctoPrint issues and tips
I got my Mk3 kit in a couple weeks ago and loving it, but I'm having a bit of trouble (I think) with octoprint.
I'm running the latest octoprint on my raspberry pi 3 via USB on the MK3, and most of it works great. I can connect to the octoprint server, upload files to octoprint and tell them to print and they turn out just fine, timelapse recording are working.
Where I'm running into what I think are issues and would like some advice on:
1) Octoprint doesn't seem to register that the printer has started a print if I start the print from the printer itself (I'm almost positive my other printer, monoprice mini v2, would trigger the 'printing' status in octoprint if i manually started a print). This keeps octoprint from starting a timelapse recording of manually initiated prints.
2) When a print finishes, that was started via Octoprint, the LCD display on the MK3 doesn't seem to properly display info, it just says something along the lines of bed heating complete. I'm assuming it gets there during the preheat, and doesn't update during the print, but I haven't actually watched the LCD during a print. This doesn't seem to impact anything, but I want to make sure it's not something I'm doing wrong
3) I haven't tested, but my understanding is that when you print via octoprint, the filament runout and power panic don't work, wanting to confirm this.
4) I've tried uploading via octoprint to the SD card of the MK3, and it seems to start to upload, but octoprint seems to immediately start printing (or running through the GCODE) and the MK3 is just sitting there. Looking at the terminal in octoprint it seems like it's trying to send commands, but the printer isn't moving, just want to try to confirm if this is normal behavior or if something's wrong.
Re: OctoPrint issues and tips
Hey I have a little question. I have some problems with my octopi. The first was that my octoprint on my pi works some times and then a few days later it won't work again.
The link to the image on the first side doesn't work. Someone knows why? Did someone have the prusa image from octoprint???
Re: OctoPrint issues and tips
1) Octoprint doesn't seem to register that the printer has started a print if I start the print from the printer itself
Octopi 1.3.7 might adress that, from Ginas blog-post about 1.3.7rc1 (from 19.3.2018)
"OctoPrint will now detect prints from SD started through your printer’s built-in controller, if the firmware fulfills a couple of requirements"
Re: OctoPrint issues and tips
I actually saw that last night when I saw there was a notification about a new release candidate. Looking forward to giving that a try, so I can have all the nice features of the MK3 active and let octoprint pretty much just handle my timelapse and streaming 🙂
Re: OctoPrint issues and tips
Hm some one test the new version with the PI zero W?
Please note that the Raspberry Pi Zero W is not recommended since severe performance issues were observed, caused by the WiFi interface when bandwidth is utilized (e.g. the webcam is streamed), negatively impacting printing results.
That was what the homepage said. And where is the prusaprint image? If i click on the link there was the Error 404 :/
Re: OctoPrint issues and tips
Yup Error 404 here too.
Please can we have it fixed, or at least an indication of the reason ❓
Re: OctoPrint issues and tips
1) Octoprint doesn't seem to register that the printer has started a print if I start the print from the printer itself
Octopi 1.3.7 might adress that, from Ginas blog-post about 1.3.7rc1 (from 19.3.2018)
"OctoPrint will now detect prints from SD started through your printer’s built-in controller, if the firmware fulfills a couple of requirements"
It absolutely works now, I started a 37 hour print tonight via the printer, because I wanted to make sure i had the filament runout and power panic working for it, since it was so long, and octoprint 1.3.7rc2 detected the print starting and began to record the timelapse like I wanted it 😀
Re: OctoPrint issues and tips
If like me you have bought, or are about to buy a Raspberry Pi B 3+ it won’t run the current Octopi 0.14 build!
The new Pi has significantly different drivers needed and OctoPrint are working on an update.
It took me a few hours to discover this, and you also need the March 2018 release of both NOOBS & Rasbian as the old builds don’t work.
Re: OctoPrint issues and tips
If like me you have bought, or are about to buy a Raspberry Pi B 3+ it won’t run the current Octopi 0.14 build!
The new Pi has significantly different drivers needed and OctoPrint are working on an update.
It took me a few hours to discover this, and you also need the March 2018 release of both NOOBS & Rasbian as the old builds don’t work.
I downloaded the nightly build from here... http://gnethomelinux.com/OctoPi/nightly/ installed and was up an running in less than a half hour. So far all appears to be working well.
Re: OctoPrint issues and tips
Whats the latest Prusa Octoprint image? The latest I have seen is V2 and it dated Dec 2017.
Re: OctoPrint issues and tips
Been using the pi zero w with a camera and it worked. didn't get any bad prints with it, but the limitation I had with it was when streaming more than 2 it bogged down it still did a decent octolaspe clip. Last night I loaded up octopi 15 nightly build on the new b+ also added a 24" camera ribbon cable, and a 6 " (USB a to b) and its own Power supply. It's like ( night and day) the same camera was performing as it should no funny lines on the display, and the server loads much faster. Just did an 8hr print without issues and I was able to have 3 streams going while octolapse and timelapse was running. moho its worth the spend ill have the pi zero as the backup as its still intact. Happy Printing!
Re: OctoPrint issues and tips
Likewise, mine is now also up and running with a nightly build of .15
No issues at all so far and none of the challenges that appear to affecting the Zero W option.
I have mounted the Pi in this case....
Re: OctoPrint issues and tips
Last night I left a print running overnight and was woken up by the printer beeping. It ran out of filament mid-job. Blargh.
But guess what? After loading in new filament the job continued uneventfully via Octoprint. I have no plugins or anything installed to deal with filament sensors. Magic!!!
Re: OctoPrint issues and tips
Hi. I have my MK3 working nicely, but have a couple of questions about setting up Octoprint for the first time.
1) All the guides I’m finding are for the little Pi. Is there a set of instruction to use a Pi3, with the Einsy’s USB connection and an external power supply?
2) I have spare IP cameras and plenty of bandwidth. Can Octoprint pull in the feeds from my NVR?
Thanks for your help.
Re: OctoPrint issues and tips
Hi all,
I have done the Prusa install on a new fresh card 25GB. Now only 1,8gb is showing, and a warning is active about the remaining free space. How do I use the full capacity of my card?
- Raspberry W
- 25 gb card
- Prusa ''baked'' Octoprint version
I'm having the same problem with my 16 GB card. I tried using the expand file system option in raspi-config but it didn't change anything.
When i plug the SD card into my laptop it shows the 14,4 GB large partition but the properties of the card only show 1,8 GB size:
Does expand file system work for everybody else or is there another way to fix this?
Re: OctoPrint issues and tips
Run fsck on the partition. If KDE's partition tool doesn't have an option to do it, in the terminal `sudo umount /dev/sdb2` and `sudo fsck -fy /dev/sdb2` should work. Then, try resizing again or use `sudo resize2fs /dev/sdb2`.
Re: OctoPrint issues and tips
Hi. I have my MK3 working nicely, but have a couple of questions about setting up Octoprint for the first time.
1) All the guides I’m finding are for the little Pi. Is there a set of instruction to use a Pi3, with the Einsy’s USB connection and an external power supply?
2) I have spare IP cameras and plenty of bandwidth. Can Octoprint pull in the feeds from my NVR?
Thanks for your help.
Install Octoprint on your Pi 3 from https://octoprint.org/download/ . Plug the USB into the printer and the Octoprint. Plug your Octoprint into power. Make sure the "RPi Port" setting on the printer is off.
That's really all there is to it. Any of the online help guides/setup guides/etc for getting Octoprint working will apply, including any involving getting cameras up and running. There is nothing special about the Mk3, just make sure the RPi Port setting is turned off.