Mini-ITX case for J1800 board. But should work for every Mini-ITX motherboard.

For Portuguese speakers, you can check my video about this project on my YouTube channel: https://www.youtube.com/AutoMarcio
)will be released soon)

I've printed mine to be a case for a Home Assistant server, and because of that, I added the logo on the top.

The back of the enclosure is designed to use the motherboard faceplate I also designed. You can modify it or you can even not use one.

I also added the design file (made in Fusion 360) so you can customize all parts as you like.

To print the Home Assistant logo and the keycap icon, I've used Devin's (from MakeAnything) two-part print technique. You can check his video on how to do that:
https://www.youtube.com/watch?v=KV2AjyowXX4

Creality

Ender 3

No

Yes

I've used a 0.8 mm nozzle to print the case, logo, faceplate, and lid. Then a 0.4mm nozzle to print the keycap body and icon.
Feel free to use any nozzle though. I just used the 0.8mm one to speed up the print.

To attach the PCB and to close the enclosure, use M3 brass inserts.

The SSD/HD is screwed on the Lid of the case.

Use a Cherry MX compatible keyboard switch as the power switch. I've used a Gateron Purple I had lying around.
Optionally a 3mm LED in the switch as the Power LED.