My old shop teacher swore by that tape trick. I use a couple quick clamps across the diagonals to check square before the glue dries.

I mean, I had a similar thing happen with my kitchen shears. I was using a super fine file on them for ages, and they just slid off chicken bones. Switched to a rougher sharpener, and now they actually bite in and cut through joints. It's not pretty, but it works.

Used to think braille was the only real option for accessibility. Seeing tactile graphics next to it is a game changer. It opens up info for people with learning differences or anyone who just learns by touch. The Museum of Science in Boston had some good 3D maps you could feel. More places need to copy this idea, it's just better design.

Wait, you got 5v on PPBUS? That's not right at all, are you sure your meter was working? That line should be way higher, like 12v. If it was actually at 5, the board would be in some kind of dead short protection mode. Did you check again after the repair?

Those little hacks are everywhere once you start looking!