I made an ultra-low-cost ($120) quadruped robot moving base for the MechWarfare competition that I couldn't get a chance to attend. I used a novel spring-and-cable parallel mechanism and a minimalistic open-loop trotting gait generator. The robot achieved 100 mm/s walking speed.
This is my Major Qualifying Project (senior thesis) at WPI. Our ultimate goal was to create a retrofitting kit to convert cheap single engine planes into autonomous cargo drones. In about 6 months, We made the world's first fly-by-wire single engine aircraft.
I was the electric+electronic engineering wizard, machinist, and embedded programmer on the team. I made gorgeous avionics.
Video credit: Nick Cyganski