MK3 and Pi Zero2W  

RE: MK3 and Pi Zero2W

How's the Pi connected? I assume you're trying to run Octoprint? I run several Zero 2w with my Mk3s for years now. 

RE: MK3 and Pi Zero2W

If you want to plug the Pi directly into the Rambo-Board, you have to activate the Raspberry-Pi port via the setup menu first. Printer's LCD menu -> Settings -> RPi port, see here.

RE: MK3 and Pi Zero2W

The Pi is connected directly to the board via the pins method.

I tried activating the Pi port.

I first tried with the Pi plugged in. But the menu froze before I could do anything.

I then tried changing the settings first, then plugging in the Pi, but that didn't work either.

Both time I got the screen full of squares.

RE: MK3 and Pi Zero2W

Did you do the steps to configure the port on the pi described at the end of this page here? I mean the part starting with "Using SSH". Best do this with the Pi powered separately and not connected to the printer board. Those instructions are for OctoPrint though. I can find no mention of extra steps needed on the Pi for PrusaLink/PrusaConnect. I never tried this but there are user reports that it is working.
Did you check that you soldered the pins correctly as in the instructions?

RE: MK3 and Pi Zero2W

I did everything mentioned in the instructions. No luck.

I also tried the Pi externally with a power supply and monitor. It worked fine and I could log into Octoprint from my laptop,and adjust the bed level using the Prusa Leveling addon.

RE: MK3 and Pi Zero2W

Posted by: @michaelk

I did everything mentioned in the instructions. No luck.

I also tried the Pi externally with a power supply and monitor. It worked fine and I could log into Octoprint from my laptop,and adjust the bed level using the Prusa Leveling addon.

Thats interference your seeing most likely can you upload a picture of your connections also if you have a otg cable you could try connection via usb

RE: MK3 and Pi Zero2W

There's nothing unusual about the connection.

It's just plugged into the back of the Rambo board.

I've connected externally via usb, but there's no room in the case to connect via usb.

RE: MK3 and Pi Zero2W

Posted by: @michaelk

There's nothing unusual about the connection.

It's just plugged into the back of the Rambo board.

I've connected externally via usb, but there's no room in the case to connect via usb.

A pictuee of the connection will help I'd say there is something up with he connection. Did it do it when connected via usb

RE: MK3 and Pi Zero2W

This is how the Pi Zero2W is attached.

It's the usual way.

RE: MK3 and Pi Zero2W

Posted by: @michaelk

This is how the Pi Zero2W is attached.

It's the usual way.

 c5e0fb58-pi-zero2w.jpg

Thats connected fine I presume you have already reflashed sd card. Did you do it through the pi imager

RE: MK3 and Pi Zero2W

I flashed the OctoPi image file using the pi imager.

I might try the old Prusa version and see what happens.

RE: MK3 and Pi Zero2W

Ah OK try flash prusalink if that boots and the printer accepts it then it's something to do with Octoprint but flashing prusa link will confirm the setup

Posted by: @michaelk

I flashed the OctoPi image file using the pi imager.

I might try the old Prusa version and see what happens.

RE: MK3 and Pi Zero2W

Flashed prusalink.

Plugged in the pi.

The printer didn't complain, and I can change settings.

So it looks like it was Octoprint.

I'll try re flashing a clean install and see how that goes.

RE: MK3 and Pi Zero2W

Posted by: @michaelk

Flashed prusalink.

Plugged in the pi.

The printer didn't complain, and I can change settings.

So it looks like it was Octoprint.

I'll try re flashing a clean install and see how that goes.

Ok insure baud rate is set correctly 

RE: MK3 and Pi Zero2W

Re flashed a new Octoprint image, and it's working now.