The robot, created by current and former students of Dartmouth College, aims to help reduce the number of concussions experienced during practice.
Tackling was banned at Dartmouth College by coach Buddy Teevens in 2010.
But, thanks to a few passionate Dartmouth engineering students, a robot tackling dummy was created in the summer of 2015 for players to practice on instead.
By having a robot to tackle instead of a person, the Steelers hope to reduce the chances of concussing one of its own players.
"You realize it's fast when you have to catch up to it.
The robot was initially controlled by an iPhone app, but is now controlled using a controller from a radio controlled car.