The seven-segment digit display PCBs arrived today from Seeed.

The NeoPixels are the first surface-mount components I've worked with -- everything else I have is through-hole. Thus the odd mix of SMT and THT on these boards. The design could definitely be improved by switching the passive components to also be surface-mount. While all that feels clumsy, everything worked as intended, so I'll call that a win for my second ever PCB design!

I guess I should also say that I don't have any solder paste or hot-air capabilities either, so all this went together with my Hakko and a T18-S4 tip.

With my prototype 3D printed diffuser laid over top, you can start to get a little clearer of a picture of what these digits might look like.

The diffusers will definitely need some more iterating, though, as I think the LEDs wind up too close to the front surface for the light to reach all corners of the "segments" well. I'll say more about the diffusers as they improve, but for now here's a better look at their rev. 1 design:

Finally, the current testing setup, with a couple of the digits linked together