Improved 1U Rack mount WOPR LEDs Enclosure

This is exactly the same concept and code as outlined in aforsberg's project, just with a slightly larger opening for the LED matrices in order to fit the ones I bought from AliExpress (https://www.aliexpress.us/item/3256805668841965.html). (Three of these are required.) 

I remixed the original 1U panel and made the thickness the same as the modules (~10mm).
Also, this one is in two pieces that attach together without glue by sliding the keyed parts into each other. I used hot melt glue to hold the matrix in place.

Desoldering one of the right-angle headers is required, either wire the connections in directly or put headers sticking straight back. The other boards can be connected with the existing right-angle headers by bending them to ~180 degrees and soldering into the output of the previous board.

Please note, following from the original 1U blank, the screw holes are too small for most standard rack-mount screws. This device doesn't have much weight, so it's possible to secure with zip ties or wire ties without any issues.