Mechanical Mechanism

So for my final project I needed to make a mini markup of my mechanical pulley system in order for it to be successful and achieve what I want. After messing around with make shift hinges and pulley systems, I came to a conclusion on cutting the cans in a pedal shape, putting a hole in the bottom for a string, and a cardboard hinge to help the pedals move back and forth. The angles of the cardboard worked perfectly for them to snap back into place. After this mock up I knew what to do on my final design