[sberens]

The controls weren't working because we had wired them up according to the labels which were wrong (which is also why the measurements didn't make sense to us).

[Neywiny]

Ah. A lesson from somebody who's built hardware that I'm sure you've now learned: make sure connectors can't plug into eachother unless they're supposed to. Even if they're different connectors, different keying, whatever, sometimes they can still be forced together.

[abdullahkhalids]

I built a lot of Ikea last month. And I was just marveling how cleverly designed everything was so that it was quite difficult to put two wrong pieces together. Mostly, the only warnings in the manuals were to rotate a piece correctly.

[sowbug]

This is good advice for robust design, but I swear, 9 times out of 10, you will be the one who keys it the wrong way during CAD layout.

[tuetuopay]

I've seen datacenter techs successfully force an SFP optic in an RJ45 port. So yeah, the shape needs to be very different.