I just posted many photos of the production and prototyping process, link is here: https://plus.google.com/photos/107206617969726519022/albums/6070219415626136945?authkey=CMTj1q7kupZN

I also delivered the final product (the non-silicone potted, 16-pixel one) to the new parents, who report it to be working well. (Phew!)