Raspberry Pi Zero 2 + 3.5in TFT Enclosure (Snap Fit, Hardware Optional!)
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Set up a touchscreen controller for your Octoprint on a Raspberry Pi Zero 2 and a 3.5in touchscreen! No supports needed!
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I have a great controller for my 3D printer comprised of a Raspberry Pi Zero 2 and a 3.5in TFT screen running Octoprint and Octodash. But I wanted to bring all my electronics outside my enclosure to print hotter materials. So I designed an angled HMI-like enclosure for the pair to chill outside the enclosure where it's cooler. I kept the full box shape to allow it to be wall-mounted or base-mounted. The cable entry point is located on a corner so it's accessible either way.
There are 2 parts needed for this build. The Enclosure and the Frame.
There are 2 options for the enclosure, resulting in 4 enclosure different files. The 2 options are:
- Pins - vs - Screws (to hold the Raspberry Pi)
- Passive - vs - Fan cooled
RPi Mounting Options:
- The pins option allows you to place the Raspberry Pi Zero 2 on 4 pins built in to the enclosure. Personally, I love this option since it means the entire enclosure is hardware-free! It may be a bit hard to remove the Raspberry Pi though, so only use if you're certain you won't need to disassemble the enclosure often.
- Alternately, the “HS” option allows you to use 4x heat-set threaded inserts. The Raspberry Pi takes 2.5mm screws to hold it down, so you'd need 4x threaded inserts and 4x M2.5 screws to match them.
Cooling Options:
- The fan option allows you to use a 2010 fan to directly cool the devices inside the enclosure. I tried it with a cheap 2010 fan but it was way too loud. Buy a nice low noise one if you need to go this route.
- The passive cooling option just has 2 vents on the sides. I drew two nice stylized Raspberry Pi logos on the side that look nice and allow a little heat dissipation. If you're not keeping this in a hot place like inside a heated build chamber or a garage, you will probably be fine with this passive cooling option.
Lastly, here are the right-angle micro USB adapters I used and the TFT screen I used that plugs directly into your Raspberry Pi Zero if you have your GPIO pins installed.
Bonus: see this frame I built for the RPi02 to fit in my printer's original touchscreen window:
Anycubic Mega-S Octodash Screen Replacement
Or this Raspberry Pi Zero case I designed first, when I didn't have a touchscreen on it: