Ender 3 (v2) BigTreeTech TFT50 Touchscreen Front-Mount Case
Description
I have not really found a convenient way to mount my touchscreen on my printer and have it fit inside a LACK enclosure / be attached to the printer so I whipped up this case as a solution. I know that it's a bit of a niche thing as the screen requires a motherboard swap to take full advantage of but someone else might find it useful. The LCD cover and the case are two separate parts. It mounts on the front of the printer using the two 5mm hex screws that hold the electronics case on the frame. I have decided to not include the screw holes in the STL file (they're in the fusion file if you want to tinker with them), because this way the position of the holes on the model doesn't potentially get affected by your specific printer configuration or other shenanigans. Just position the case and drill the two holes in the exact position needed. You can use a piece of paper and a marker or pencil to mark your holes and then use that as a guide for where to drill. _I will warn you that the clearance between the bed leveling wheels is not the greatest so be careful when choosing a mounting point!_ For the built-in USB part, I simply glued a Mini USB to USB A OTG cable onto the bottom slot on the case and plugged it into the printer after mounting. I made a USB A male to USB A male cable for OctoPrint use (I did not connect the 5V wire, this way the Pi is never capable of backpowering the board and causing issues!) I have no real solution for accessing the printer's built-in SD card slot but realistically you shouldn't need to. You can use a custom build of Marlin with binary file transfer enabled to allow you to update your firmware from OctoPrint, should you wish to. Other than that, screw the bottom of the case in with the holes drilled, plug the USB OTG cable into your motherboard, push your touchscreen wiring in the case through the hole on the bottom, plug them into the TFT50 and place the screen inside the case, it should fit pretty snugly. The cover goes on top and you're ready to put the little rotary dial back. Eventually someone can remix it with screw-holes instead of the loose-fit method I used, should anyone want to. For the screen's USB port a 90 degree USB A to USB A adapter might be handy. Should you want to remove the screen, you can pry it free through the SD card hole if the fit of the screen is too tight. Fusion 360 file is included. I apologize, it is a bit sloppily modeled but the project was initially created to just model and print some test-fit bits for the entire project and ended up encompassing the whole thing. Hope you find it useful!
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