I understand the weirdness of picking out a couple of examples, but I'd expect they'll confiscate and destroy any DIY SOC/microprocessor encased in a bundle of wires or aerials. An exhaustive list is tedious, a class would undoubtedly catch random consumer electronics.

They don't mention cookware or DIY either but try entering with a pressure cooker and a bag of nails. They won't pause to look for explosives.

For the sake of one day in one place, it's not worth getting angry about.