20? That’s a lot. I take it you can’t or don’t want to use standoffs?
Discussion
Here's what I've got right now in the rack.
It's a pain shutting everything off to work on a pi in the middle of the row. It's also a bit of a mess.
That’s a hell of a stack of pi’s.
Quite the set up. Makes me jelly.
I’ve got 2 pi’s like this, 1 setup with longfi and several others just lying around. 