A printed case for the M5Stack HDMI add-on
The Add-on Display In - the HDMI input for M5Stack's Unit PoE-P4 - comes as a bare board, with no case. The Unit PoE-P4 has one, so the pair looked unfinished on the desk.
I drew a case for the add-on that matches the Unit PoE-P4 housing: same width, same corners. The two sit together as one block.
HDMI comes out of one end and the USB-A port out of the other, and there are vent slots on top. Ethernet, USB-C and the side ports of the Unit PoE-P4 stay free.
It is one printed part and needs no screws: four tabs along its edges go into the slots of the Unit PoE-P4 housing and hold it there. The tabs are thin, so press it on gently.
The Add-on Display Out has the same outline, so the case should fit it too; I have only tried it with the Display In.
It is the first printed case for an M5Stack board on the hardware list.