One of the most popular projects we’ve featured here was Dave Hunt’s PiPhone. It’s a working mobile phone built around a Raspberry Pi; it does all the telephony you’d expect, but it’s a smart-ish phone, not a complete smart phone, which made some of you sad.

In the year since the PiPhone was first built, Tyler Spadgenske has been beavering away at his own version, which improves on the original. We think it’s rather splendid.

What’s new here? The TyTelli can take photos (and send them to Dropbox or another device), send texts and manage its own battery level, as well as placing and taking calls. Tyler wrote his own OS in Python, 3d-printed a rather smart enclosure, and now has a phone he’s built from the bottom up – hardware and software both.

Tyler has made full, diagrammed instructions, a parts lists and a Thingiverse file for the 3d-printed case available over at Instructables.