Rasberry Pi 4  

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wminear
(@wminear)
New Member

I have spent hours searching for an answer before posting. I am looking for what all I need hardware wise to use a Rasberry pi 4 as an octoprint server. I see numerous posts on how to make the older Rasberry Pi's work, but none on the new ones. Everyone seems to do such a great job with instructions and build blogs I feel like I am just missing something.

How does the Rasberry Pi 4 connect to the Prusa i3 Mk3S? I am comfortable soldering a pinout on to a Rasberry but it looks like it comes with a pinout already which would not be correct for the Prusa. Does it connect via USB? I see some people are powering via USB external from the printer, is that still required? My printer shipped today so I am trying to get ahead and have the Rasberry Pi built before the printer gets here.

Posted : 19/10/2020 4:52 pm
romio
(@romio)
Active Member

Hi wminear,

I didn't know that there were different instructions for using a Raspberry 4 than the Raspberry 3 with a prusa. The 4 has the same USB connection as the 3 so connecting shouldn't be a problem.

I'm in a long print now, so i can't test it right now.

Posted : 19/10/2020 5:23 pm
cwbullet
(@cwbullet)
Famed Member

I connect mine thought the header pins or USB depending on the printer.  

Posted : 19/10/2020 5:32 pm
--
 -2
(@-2)
Illustrious Member

I use the simple USB cable ... and ignored trying to make the pi a monolithic part of the printer. This way if the printer breaks, I know it is the printer.

The Pi4 requires more power than I'd be comfortable sucking from the Einsy USB.

 

ps: YSB -USB - SST .. hey typing was never my strong suit.

This post was modified 1 month ago 2 times by --
It is always wise to get more than one opinion... as for trusting Prusa? No way man....
Posted : 19/10/2020 5:39 pm
wminear liked
Andi G.
(@andi-g)
New Member

The Pi4 need about 3A Current  to work.... to connect it like Pi3 or Zero won‘t work. I‘m about to connect it to the PSU with a Step-Down-Module, but not sure if it works 🤷🏼‍♂️

Posted : 24/11/2020 8:03 pm
cwbullet
(@cwbullet)
Famed Member

I have had decent success connecting it for power off the Rambo pins.  

Posted : 24/11/2020 8:08 pm
Andi G.
(@andi-g)
New Member

@cwbullet

should take the firs 2 pins? (+- +-) PSU or the second one? Thank‘s for your very fast answer 👍🏻

Posted : 24/11/2020 8:22 pm
Egar
 egar
(@egar)
New Member

@andi-g

Marius Hornberger has a video on YouTube where is sets up a Raspberry Pi with a stepdown converter.  Seems very doable.

Posted : 24/11/2020 8:29 pm
cwbullet
(@cwbullet)
Famed Member

@andi-g

This cable is what I have used.  

Posted : 24/11/2020 11:33 pm
Andi G.
(@andi-g)
New Member

Thanks guys! 👍 gonna make it this weekend an be happy printing 🤓 

Posted : 25/11/2020 5:18 am
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