Help with mouse input and output?

Okay but the foot petals seem like a good idea, so the foot petal isn't producing any power?

If I have this right: The Arduino Due (One of the pins) -------> Jumper Wire -------> Foot Pedal (If it is pressed it closes or opens the circuit.. idk but doesnt rlly matter) -----> Goes back to GRD. Send data to Arduio which would be connected to the computer via it's Programming Ports to send the mouseclick script?

Also I literally have none of the supplies:

What I have: +The Due Board

  • micro usb cable meant for phones but what I use for the Arduino

What I (think I need): + Foot Pedal Switch

For the foot switch what I am looking for is something that is going to last, isn't very expensive and preferable has close shipping to me not really long shipping times. (I live in Canada and would like to order something in Canada maybe off Amazon.ca). Anyways since I have literally 0 knowledge on this type of stuff I don't really know what to order for this? Could you give me some help? I understand the whole concept of it I just don't know how the guy making that instructable knew that the inside would be basically empty and stuff. Thanks!