Hardware
The hardware set-up underwent a 2 stages of iteration. Although I finished a fully-working initial prototype design by the fall of 2016 (and even used this project to get into the semi-finals of a Inventor Cup hosted by my college[1 hour 56 minutes into the video]), the design was clunky which made the clock very difficult to move around. In addition, it still had some design flaws like the fact that it required both a 12V @1A DC power supply to power the nixie displays and the bed vibrator in addition to a 5V @1.5A DC power supply to power the Raspberry Pi (no single component should have 2 separate power supply). In addition, I was getting mixed results from the cheap USB audio interface (both for the Prometheus alarm sound and using the Pi as a AirPlay media server). Hence, I used the wiring schematic, adding new features, and updating the design in order to be a single-component device that hid the internal components, soldered sensitive connections between components, had only one power input, and was aesthetically pleasing to look at.
For the purpose of this guide, I will refer to the prototype as Prometheus v1 and finished one (I am currently using) as Prometheus v2.
