This would be the perfect way to learn how to handwire your own board. Go to KLE, paste the blow into the "raw" field and find a company to cut you a sandwich case. Find yourself a Microcontroller with 27+ GPIO and handwire it following any of the guides online. What you are describing would be so incredibly niche that you would only find that in a small run group buy or if someone like yourself designed a PCB and had extras. The plate/case would be 100% custom because it's non-standard which is why you wouldn't find any off the shelf PCBs/Cases.
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