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OctoPi Case for Prusa i3 MK2S and MK3

by hackoholic, published

OctoPi Case for Prusa i3 MK2S and MK3 by hackoholic May 21, 2017

Summary

<Update: 12/30/2017>
Changed description to include MK3 since it fits in the same holes on the MK3 frame so long as you don't have the Multi-Material Upgrade installed.

<Update: 9/18/2017>
Thanks to jhans1 feedback in the comments, this case is confirmed to work for both Raspberry Pi 2 & Raspberry Pi 3.

This is a remix of hofftari's excellent Rasperry Pi 2 Octopi case for the Prusa i3 MK2. After I remixed another adapter to make his case fit my new MK2S, I realized that I could easily adapt his original case to include my adapter as an all-in-one solution. Thus I remixed my own adapter plate (https://www.thingiverse.com/thing:2334079) and hofftari's case (https://www.thingiverse.com/thing:1325370) to come up with this new design.

This also eliminated the M3 bolt that was originally located inside the lid and dangerously close to the Pi's GPIO pins.

Print Settings

Printer Brand:

Prusa

Printer:

Rafts:

No

Supports:

No

Resolution:

.15-.20

Infill:

20%


Notes:

Printed in PLA.

Post-Printing

Hot off the presses

This printed with no supports and was complete in 5 hrs 49 minutes.

Right aligned with clearance and nice ribbon cable routing.

Easy access to the Micro SD card

Pi camera ribbon cable routes nicely to bottom of frame with no Z axis interference. The short USB cable also made routing a piece of cake. https://www.amazon.com/gp/product/B000067RMY/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

How I Designed This

Fusion 360

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Did you have to make any adjustments to the X-axis cabling?

Printed this, but unfortunately the cables exiting the top of the Rambo case clash with the corner of the octopi case in some positions. (MK2S, otherwise unmodified)

Just printed and its a perfect fit with a raspberry pi 3. Thanks for sharing this it will be realy nice on my MK3

This doesnt fit my MK3. The lid/mount has two horizontal holes.. but on the MK3 frame, there are 3 spare holes which are in a triangle.

I am going to try and redraw the mount to match the holes.

Please ignore previous comment. jweaver has confirmed this DOES fit MK3!

jweaver's update:

"I went back are read the comments and realised he was talking about the mount.. BUT..

Ignore me as it DOES fit.. There are 4 holes not 3.. 1 was in the shadow.

So please add MK3 in the title again as its a perfect fit.. The only thing I am going to do to change is to move the screw holes 1-2mm as my motor touches the box.. This is because I have my motor rotated 45 degrees due to an upgrade that helps with tensioning the belt, and because of this, the corner of the motor just about touches the case.

But if I move the screws to the right, it will push the box over to the left.

This isn't likely to affect many people, so I wouldn't worry about. "

Comments deleted.

I went back are read the comments and realised he was talking about the mount.. BUT..

Ignore me as it DOES fit.. There are 4 holes not 3.. 1 was in the shadow.

So please add MK3 in the title again as its a perfect fit.. The only thing I am going to do to change is to move the screw holes 1-2mm as my motor touches the box.. This is because I have my motor rotated 45 degrees due to an upgrade that helps with tensioning the belt, and because of this, the corner of the motor just about touches the case.

But if I move the screws to the right, it will push the box over to the left.

This isn't likely to affect many people, so I wouldn't worry about.

Appreciate it jweaver. I'll remove my edits and leave the full MK3 compatibility.

Awesome case!
I would like to add cut away part in the top so you can access the GPIO's. In my case it is for the following: https://www.lisiparoi.com/

there is a nice camera case here: https://www.thingiverse.com/thing:2382534 but I would like to power it with my Rpi3...
Can you give me the source files? Thanks!

Raspberry Camera Lisiparoi Mount
by jov58

Any luck? I could use the same upgrade.

Edit: Nvm :). Meshmixed it to have a GPIO slot, just printing now :).

OctoPi Case for Prusa i3 MK2S and MK3 with exposed GPIO ports

Thanks for sharing this design/remix. I've printed 2, 1 for MK3 and 1 for MK2s. I love the way they fit on printer. I'll have to order some short usb cables too. Can some1 link the screws that join the case halves. My M3 x 16 are too small in diameter, so they dont bite the bottom half case. For now I just taped it.
These were too narrow in diameter:
Link: http://a.co/hKrcKBt

m3x10 for the frame and m3x 16 for the pi.
they fit snugly for me. in fact i had to slightly drill the holes out to fit the heads

Can confirm M3x16 works perfect for the Pi though the heads are a bit snug at first. I believe I used M3x8s for the frame but looks like M3x10s would have worked perfectly.

I could not get the 3mm screws thru the Pi.

Nice but my MMU (Multi Material Upgrade) motor multiplexer is in the way. No good.

Yep from day one I knew this was using the MMU mounting brackets. As a matter of fact, it is the very first line in the description for this thing. I got my own MMU a month or two ago but haven't had a chance to install. Once I do, I'm sure I'll consider modifying this to fit if I don't find a better solution out there in the wild.

Also fits Prusa i3 MK3. Check pictures here: https://www.thingiverse.com/thing:2736439

Prusa i3 MK2/MK3 Raspberry Camera Mount
by jgeyer

Thanks for confirming that jgeyer! I've updated the description to include MK3 as well as MK2S.

Comments deleted.

Can you provide me with the source files or help me enlarge the case (PM'd as well :)), so the GPIO pin's have more space.

I bought this, but still missing clearence - https://www.adafruit.com/product/2823

I'm trying to add temperature sensor DHT11 to my printer but can't run the wires as there is too little space. The Pi needs to move away from the base about 3-4mm for it to clear.

Another bigger remix would be to add room for DHT11 inside the case somehow.

Not really good at 3D CAD, but if I could get the source files, maybe I could work something out myself (first time though).

Anyone can help me ?

PM with links sent. Please share or attribute any Remixes as I'd love to see what you come up with.

I'm trying to do basically the same thing, but for a DHT22. Could you send me the source files also? Thanks!

Anybody has a Pi case for the Prusa i3 MK2S with the multi-color upgrade?

Note that the upgrade is using the same two holes in the frame as this RPi case.

Ya I've been thinking about that as I have my MM upgrade coming in November. I imagine the answer will be a creative melding of his new multiplexer box with something like this case. Anyway keep an eye out here as I'm sure ill give it a shot unless someone else posts a really sweet solution sooner.

A creative melding of the new multiplexer box with something like this case is exactly what I was thinking. Got a Pi Zero today to test OctoPrint. It's way smaller than a Pi 3, so the new Frankenstein case should be easier to design. Or even attach a minimal Pi Zero case with small M3 screws to the multiplexer box?

Edit: Here is the RPi 2/3 minimal case.

Minimal Raspberry Pi Zero Case/Holder
Minimal Raspberry Pi 2/3 Holder (Vesa 100)

Is this case compatible with the Raspberry Pi 3 ?

I can't answer that as I don't own a Pi 3 but I doubt it. I use Pi 2 so I specifically found and remixed my design from hofftari's Pi 2 case found here. (https://www.thingiverse.com/thing:1325370). Maybe someone else here will have a beter answer for you but I really doubt they are the same shape so doubt my case will work for you.

Raspberry Pi case for Prusa i3 / i3 Mk2

When looking at pictures and dimensions they look identical. I will let you know after i have printed the case and checked fitment.

smile

I can confirm that the case fits the Raspberry Pi 3 like a glove. The dimensions are identical to the Raspberry Pi 2.

I appreciate this feedback! I'll update my description to make that more clear.

Nice case - thanks for the design. I printed in black so I need to drill a couple of small holes on top to be able to see the LED's.

Are the screws used to close the case still M3 or M2.5?

M3. See previous reply for details and link back to hofftare's original thing.

Any chance of the Fusion files for this? I'd like to tweak it slightly (increase the diameter of the bolt head recess, add a cable entry gland) for my printer :)

Sure, PM me and we can discuss file type etc. and how to get them to you. Keep in mind this is just hofftari's imported STL that I cleaned up a bit by removing triangles and then added my new elements. Might not be as easy to work with as you hope.

If you look at hofftari's original case that I remixed (https://www.thingiverse.com/thing:1325370), He lists:
4x M3x16 screws for the case
2x M3x8 screws for attaching the case to the frame.

The MK2S has two tapped holes there which I believe are for the multiplexer board for the multi-material upgrade but they work great for mounting the Raspi.

Raspberry Pi case for Prusa i3 / i3 Mk2

How did you attach this to the frame? And what hardware are needed? I can't seem to find that info

nice case, i will be printing it this week!

Quick question, where did you get that tiny USB cable from?

Look in the text after the last picture of the case and you will see the Amazon link to the cable. Makes for a really nice installation!

Cheers buddy!

You gave me the right search criteria to find one in the UK! i opted for this,

https://www.amazon.co.uk/gp/product/B00XW2JZFO/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

Many thanks,
Will

This is great, can you make a revision with hole for pin headers? To support hats?
Cut off a rectangle, and use 4 tiny supports that easy to break with some force, to people allow to break and access to headers

Made one of these. Nice design. I would post a picture but it's in black, which won't show the detail any better than your pictures. Looks great on the MK2S!

Someone asked what camera case I was using so I posted up my remixed design here if anyone is interested. https://www.thingiverse.com/thing:2352964

MK2 and MK3 Pi Camera Mount with bottom exit ribbon cable

If it was snap together, it would be perfect! ;)

Agree 100% and thought the same thing when I first printed and had to find fasteners!! However, I do really like the look of it with the recessed socket heads in there. I want to experiment with snap fit enclosures more as I've seen some Layer By Layer videos where Noe shows how this can be done. If I ever figure it out I'll certainly consider updating this one.

what Camera Case are you using?

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