The Perpetual Energy Wasting Machine is an artistic contraption by Berlin-based artist Niklas Roy. It involves a rope and pulley mechanism which moves an elevator continuously between the 1st and 2nd floor of a building. The system is powered by the sliding doors of the elevator. In the elevator, a calculator figures out just how much energy was wasted, happily printing the results which are immediately deposited in the trash bin below.
"Perpetual Energy Wasting Machine" is a rope and pulley mechanism, installed in the staircase of the WRO Art Center in Wroclaw, Poland. The mechanism connects the sliding doors of the elevator in one floor with the elevator call button on another floor. Operating in two directions on the first and on the second floor, the contraption automatically moves the elevator cabin in an infinite loop between those two levels.