I just gave a talk at iOSDevCampDC 2017 about building an Internet of Things bridge in Swift on a Raspberry Pi.  Here’s the deck on SpeakerDeck, and I also exported the slides with my notes into a PDF:

Slides on SpeakerDeck

Download Slides with Notes (PDF)

Also, here’s my demo video:

My Doorbell Runs Swift DEMO on Vimeo