The steps are as follows: A pendulum swings, hitting a ball. The ball rolls down a ramp, where it falls into a bucket. The bucket then falls down, due to the weight being heavier. This results in a domino being knocked over. The domino then knocks over another domino, which then knocks over another. This third domino pushes a button. The button being pushed results in the light bulb being turned on. The button is accidentally pushed too much, and the heat breaks the bulb. A fragment of the bulb flies up and knocks the pendulum, cutting the rope. The metal ball swings off the pendulum to break the bucket.
*not the original project, I just added everything breaking