I've assembled most of the second revision prototype, including the PCBs, but unfortunately made a tiny mistake on the BOM so I'm missing a bunch of 2.2 uF capacitors (just ordered some more). I decided to leave off the SD card and additional RAM chip since I don't think I'll end up needing them, and they're definitely some of the more expensive components. Here are some photos, as well as a side-by-side with the original prototype.