Ya, they're just Kicad renders but I think they look good. Couldn't really find a place with a pink-ish solder mask so we'll see how OSP copper looks. It's held up pretty well on some test pieces floating around my desk.
They are being manufactured so hopefully I can share picks of the real things soon (and just maybe they will work too).
Oh and here's a pick of the SAO you can win if you figure out the puzzle/easeregg:
It adds functionality to the badge! But that's all I'm saying for now.
The Floob will have 4 "buttons". Originally, I figured we'd just go with capacitive touch pads. This turned out to be not so great as it was too easy to trigger the wrong button, both from the proximity to the other pads and the traces leading to the pads. Tried a few different configurations and sensitivities but nothing felt acceptable.
We worked to find some tactile push buttons that were big in diameter but not very tall. That would be our fallback because it would really detract from the look of the Floob.
We also considered tactile dome switches. The problem with those is assembly: we did not want to be the ones to tape down the little domes (also, would the tape look ok?). Well, as it turns out, the PCB manufacturer that I am looking at right now said they can do dome switch assembly (hope they use some nice, clear tape).
This feels like a really good solution then: they can be assembled for us, they don't detract from the look, they give a tactile response, and best of all, they are super simple with no extra components needed to work (and almost no chance for false activation). Not to mention, they are pretty robust and easy to repair with some packing tape.
Here is a pic using just packing tape to hold them in place. They are not functional but they do provide a good sense of feel and look.
Why is it impossible to find xmega32e5s? And why is the only type of xmega16e5 in a qfn package...
So it appears that the chip shortage is not yet over for Microchip.
But that's not going to stop me. Prototyping and programming are on the way.
I'll post the proposed functionality of the badge in a few day.