I bought a magnetic imager tile 8x8 a couple of months ago and finally got around to hooking it up to a teensy 4.0. When I first wired it up I used the silk screen labels on the side with the pins. It was not properly advancing through the tiles. Finally I noticed that on the opposite side–the one with the hall effect sensors-- SCK and CLK labels are interchanged. The ones on the hall effect side work.
Thanks for pointing this out; we’ll get it fixed!