With a team of three other students, I designed and built a robot that could climb a flight of stairs, and is intended for a robot vacuum such as a Roomba. The device, STAIR (Stair-Traversing, Articulating, Innovative Robot), has two rotating arms, which push the Roomba to the next stair, then fold back to their original position. These arms are powered by DC motors connected to worm gears, which spin shafts connected to the arms. I was personally responsible for a significant portion of the CAD, woodworking, and project organization/management needed for the project. Ultimately, the intended motion was possible, the electronics worked well, and the robot could almost make it up stairs independently, although a small human intervention was needed. The project won the Best in Section award with a perfect score, as well as second runner-up for the people's choice award across the entire freshman engineering design expo. The final video and abstract presented at the design expo are available below.