I 3d printed 1/3 Scale Sentry Bot based on my design for Fallout 4. Total build time was about 9 months. It uses a rapberry pi, and operates via bluetooth gamepad. It is a bit over 4 feet tall.
Sentry Bot guarding my work cubicle
Mothman Festival as I was assembling Sentry Bot
Sentry Bot Electronics tray
Sentry Bot Overview