squirrelf3d
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Brick Case Screen (BTT PiTFT 70)
🕑 Added 2023-03-30 19:09:09 +0000 UTCThis is now fully usable, and a few tweaks, now support for both heat inserts (4.6 and 5mm OD) increased the screen hold depth by 1mm so should be more flush
There is a braket that shifts the pi to leave room for the usb cables
To secure the Pi and bracket you'll need M2.5x6 or M2.5x8
Screw and heat inserts are totally optional for the actual case and even screen, this can hold on it's own as is, just sliding the pieces together, and screen can just rest there (as long as there is no risk of it falling off a table).
But if you want it secured or super secured the option is there. you can use magnets on the top.
Can be super secured (not very easily) and be completely lock down, with two not easily accessible screws that secure the backplate to the top.
To secure the screen you'll need M2.5x6 (or maybe m2.5x8)
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One screw hole is missing on purpose on the bracket as that screw would otherwise be under the GPIO and could risk an electric short.
Connect to the Pi via ribbon cable, included with screen (all in one power, display and touch)
I was able to fit power, ethernet and usb without needed angled version of them.
Meant to be used with the klipperscreen project
You can control multiple printer with just the one screen+pi over the network.
No print support needed, print everything vertically.
I included an stl with the 3 pieces arranged so that it can be printed in one go (except for the pi bracket)
This was 2 walls, and 5% gyroid infill - about 225g of filament, does feel lightweight but sturdy enough for this.
if you want to to be sturdier increase the wall and infill
One fan is likely enough, has a spot for a 4010 or 4020 fan (would recommend noctua 4020 with PWM, which you can control through the pi GPIO, and bit of tinkering some info here, the PWM frequency is "wrong" in that project, should be closer to 20~24Khz, but I don't know if the pi is capable of that high frequency via GPIO, but regardless can likely work even at lower PWM frequency. )
Comments
Will Gunty
The design for this was based on the classic Lego space piece which is the same shape and has a screen on the front of it.
Will Gunty
There are a couple gotchas with this. You need to get a 90 degree USB connector and the Ethernet cable for the pi needs to be connected prior to installing. There is not sufficient space inside to connect and disconnect the Ethernet or usb as is. I am running a single noctua fan with PWM. Don’t recall the specifics of my config for that. I currently have an external USB hub connected to drive my two printers and connect cameras to. I do need to do some more config on the Klipper Screen side but it makes things like probe calibrate and screws tilt calibrate so much easier. My office and computer are in the next room. But being able to do anything I need to right between the two printers is great.
