RE: Octoprint + i3 MK3 for dummies?
Installed Octopi and got it working. Of course I installed it with an hour to go on a 10 hour print. Pft. Lesson learned there I guess. But the good news was "it worked". Then it didn't work. Still doesn't work. I've rebooted the Prusa and the Pi, no connection. Every time I type octopi.local it says I have no internet or something. Wrong. Tried running Bonjour again, it can't find the printer. I tried all this while the printer is printing though so I don't know if that matters. I was just looking for some statistics on the print, since it's 36 hours long. I'm only about 3 hours into it. Any suggestions I should try AFTER this print is done?
RE: Octoprint + i3 MK3 for dummies?
Installed Octopi and got it working. Of course I installed it with an hour to go on a 10 hour print. Pft. Lesson learned there I guess. But the good news was "it worked". Then it didn't work. Still doesn't work. I've rebooted the Prusa and the Pi, no connection. Every time I type octopi.local it says I have no internet or something. Wrong. Tried running Bonjour again, it can't find the printer. I tried all this while the printer is printing though so I don't know if that matters. I was just looking for some statistics on the print, since it's 36 hours long. I'm only about 3 hours into it. Any suggestions I should try AFTER this print is done?
I wasn't able to see octopi.local either. Put in the ip address of the pi instead. Works for me.
RE: Octoprint + i3 MK3 for dummies?
I would not try connecting Octoprint in the middle of a long print. It will reset the printer on initial connection, stopping the print.
RE: Octoprint + i3 MK3 for dummies?
I would not try connecting Octoprint in the middle of a long print. It will reset the printer on initial connection, stopping the print.
Yeah, that would have been valuable information last week. I learned not to plug in anything to the USB in the middle of a print. Now I was just hoping to get some stats, but it's right here so Octopi is really just the ultimate lazy. I'll try discovering the ip after this long print.
RE: Octoprint + i3 MK3 for dummies?
@cmx
Good idea and question. I'm also interested to know if using the GPIO vs USB has some advantage. It seems you did not get any answer so far !?
RE: Octoprint + i3 MK3 for dummies?
@jpeverley83
What were the problems that you were having? Because it won't even recognize any connection. When I check the activity of the usb ports I can see the one connected to the printer, but octoprint still wont recognize it. My specific details are: Prusa Mk3S, Raspberry Pi 3b+ running rasbian with octoprint running in a docker container.
Thanks
RE: Octoprint + i3 MK3 for dummies?
@buckeyestargazer
Alternately if you're using a static address, put the name resolution in the hosts file. Nice and simple and you don't need Bonjour.
RE: Octoprint + i3 MK3 for dummies?
@buckeyestargazer
Alternately if you're using a static address, put the name resolution in the hosts file. Nice and simple and you don't need Bonjour.
I don't know what any of that means LOL. Remember, this is a "for dummies" thread. 😀
RE: Octoprint + i3 MK3 for dummies?
@buckeyestargazer
Sorry, let me try again. In your case you want Bonjour to convert the printers IP address (xxx.xxx.xxx.xxx) 4 hard to remember numbers into a memorable name ie OctoPi.local.
By default your router will lease a IP address to your printer, so that the numbers change on a regular basis. But you can tell your router to always give your printer the same address thus Static address.
Bonjour provides name resolution allowing for this regular change.
But if you set a static address, you can simply add the static numerical address and the memorable name to a text file that the operation system reads to perform said name resolution. The file is called hosts and on win7 resides at "C:\Windows\System32\drivers\etc\".
Happy to go into more detail if you need.
RE: Octoprint + i3 MK3 for dummies?
@pomalaterre
As with most things a lot of conflicting information. 🙂 One guy says the USB overhead is the same as going straight to the header, another says straight to the header is more efficient. It does not seem very hard to connect to the GPIO pins so I think I will just do that. I am thinking of using a network cable, and just solder it to a header and plug it in. Then I can have my Pi4 outside the enclosure with a screen and camera attached, and run it off it's own power supply (which is required).
Personally after reading I expect that GPIO is more efficient, because they are sending the same serial data but the USB has some extra protocols wrapping it up. BUT I also think USB will work fine, seeing as everyone is doing it with no problems, so it's more just preference.
RE: Octoprint + i3 MK3 for dummies?
@cmx
If you are curious there a big thread on the OctoPrint forum that deals in part with this issue here
RE: Octoprint + i3 MK3 for dummies?
Another question regarding Octopi and Prusa MK3S
What's about the printbed profiles?
I have on my Prusa 2 different?
A smooth and the texture one printbed..
Must or how can i switch between the 2 printbeds because normal i would change it on Prusa display menu and of course they have different Z axis adjustments!
br
Manfred
RE: Octoprint + i3 MK3 for dummies?
@pomalaterre
@cmx
One possible advantage of gpio over USB is that the printer does not reset when you connect to it. Not a huge deal if you only print over OctoPrint, but it won't kill a print when using the sdcard.
I never noticed any lag when using USB, so I can't tell you that gpio is faster.
RE: Octoprint + i3 MK3 for dummies?
@pomalaterre
@cmx
One possible advantage of gpio over USB is that the printer does not reset when you connect to it. Not a huge deal if you only print over OctoPrint, but it won't kill a print when using the sdcard.
I never noticed any lag when using USB, so I can't tell you that gpio is faster.
I decided to do it anyway, because it was not a big project and as far as I can tell there are no downsides to using the GPIO pins. So it should be the same or a little better.
I bought some ethernet jacks, which I wired up with a header to plug into the rambo board, and a plug to connect to the PI (attached image). They are a little bigger than I expected, but I am sure I can find some way to mount it on the case. Then hopefully I can just attach the printer to the PI with a standard ethernet cable.
The only thing I found strange was in Prusa's guide to connecting the PI Zero to the Rambo board they used two additional GPIO pins which I can not see any use for. I ended up not wiring them and just using ground and the TX and RX UART pins. So hopefully that works or I will have to remake my connectors. 🙂
Now all I need is the printer to test it on.
RE: Octoprint + i3 MK3 for dummies?
Another question regarding Octopi and Prusa MK3S
What's about the printbed profiles?
I have on my Prusa 2 different?
A smooth and the texture one printbed..
Must or how can i switch between the 2 printbeds because normal i would change it on Prusa display menu and of course they have different Z axis adjustments!
br
Manfred
Any idea ? Or did other users haven't other print plates on the heatbed?
Is this a problem with Octoprint or is it not because the standard setting and leveling is used per default from printer firmware and stored.....
thx
Manfred
RE: Octoprint + i3 MK3 for dummies?
Another question regarding Octopi and Prusa MK3S
What's about the printbed profiles?
I have on my Prusa 2 different?
A smooth and the texture one printbed..
Must or how can i switch between the 2 printbeds because normal i would change it on Prusa display menu and of course they have different Z axis adjustments!
br
Manfred
Any idea ? Or did other users haven't other print plates on the heatbed?
Is this a problem with Octoprint or is it not because the standard setting and leveling is used per default from printer firmware and stored.....
thx
Manfred
Octoprint doesn't need to know which sheet you use. The only effect of the different sheets is the need to adjust Live Z and that's completely handled at the printer. Octoprint has no notion of Live Z.
RE: Octoprint + i3 MK3 for dummies?
I have several questions about connecting a PI3B to the Einsy board on the i3MK3S.
1) I would like to power the PI from the 24V power supply of the printer with a buck converter that outputs 5V. I can connect the output of the converter directly to the PI. Question: Does the 24V power supply on the printer have enough power to run the PI plus a couple of LEDs to light up the printer? That is, what is the current rating on the power supply vs the max current draw of the printer?
2) Where can I find a connection schematic for connecting the GPIO pins of the PI to the Einsy board? I will have to make up a cable, but that is no problem.
I haven't gotten the printer yet, and I intend to make an enclosure for it (probably out of 1/4" plywood). I will make a custom case for the PI plus the camera plus the buck converter. I use Alibre to do the CAD design, and I have a case for the PI already to go (I have a Flashforge Creator Clone that I use for making small stuff). I have Octoprint all set up on the PI SD card and it seems to work fine.
Senior Life member of IEEE.
RE: Octoprint + i3 MK3 for dummies?
I have several questions about connecting a PI3B to the Einsy board on the i3MK3S.
1) I would like to power the PI from the 24V power supply of the printer with a buck converter that outputs 5V. I can connect the output of the converter directly to the PI. Question: Does the 24V power supply on the printer have enough power to run the PI plus a couple of LEDs to light up the printer? That is, what is the current rating on the power supply vs the max current draw of the printer?
Many think the stock PSU is marginal at 240W. Adding 5-12W for the PI plus 3-7W for the LEDs won't help things. I ran my MK3 with just the PI for a few years. Nothing bad happened. I never liked the ticking sound the stock PSU made, so when I wanted to add LEDs I moved to an Meanwell LRS-350-24. Search this forum for upgrade mk3 PSU for more discussion on max current.
2) Where can I find a connection schematic for connecting the GPIO pins of the PI to the Einsy board? I will have to make up a cable, but that is no problem.
I haven't gotten the printer yet, and I intend to make an enclosure for it (probably out of 1/4" plywood). I will make a custom case for the PI plus the camera plus the buck converter. I use Alibre to do the CAD design, and I have a case for the PI already to go (I have a Flashforge Creator Clone that I use for making small stuff). I have Octoprint all set up on the PI SD card and it seems to work fine.
What's the cable for? Most folks connect the Pi to the Einsy board via USB.
RE: Octoprint + i3 MK3 for dummies?
@krb
"I never liked the ticking sound the stock PSU made". I believe this was a software problem related to pwm frequencies, now resolved.
RE: Octoprint + i3 MK3 for dummies?
OK, now that's odd. Just got bonjour for windows up and running. Can use the Powershell to ssh [email protected] just fine. Using a browser to go to prusa-printer.local:8080/html/index.php for the RPi_Cam_Web_Interface fails, yet using the ip address for the same page works fine. Wot!? I'll try to work out what's going on, but if anyone had that happen and knows how to fix it I'd appreciate the heads up.