The Watchman

I added face tracking to the Doorman, creating the Watchman! The eyes will track your face as you move past.

I made design changes, most notably to incorporate Google's AIY VIsion board (for face detection) and to incorporate Will Cogley's [Advanced Eye mechanism](http://www.nilheim.co.uk/latest-projects-and-blog/compact-and-robust-3d-printed-animatronic-eye-mechanism.)

Video of tracking: https://www.youtube.com/watch?v=xo8RRXo4SKw


More detail on what I changed:
- Designed face structure to securely package electronics and allow quick access.
- Integrated Google's AIY Vision Hat for offline face tracking.
- Added batteries for mobile use.
- Wrote Python and C++ programs to find faces and direct servo positions.
- Adapted and upgraded eye mechanism - using Will Cogley's (Nilheim Mechatronics) advanced eye mechanism.
- Designed laser accuracy tuning hardware  - integrated lasers to tune eye mechanism accuracy.

The eye mechanism STL's I uploaded are parts that I used