First Circuit

TO DO  Create your own simple circuit that activates with a switch you build from a conductive material. You can use the power and ground pins on your Arduino to power your circuit.

The task was simple I need to find a conductive material to link the two power ( - & +) sources together to make the costume switch. Once I understood the flow of the electronic circuit I looked for a found object that has the conductive components. I came across a couple of options. ( Pater Crips, Nails, any unused old material trinkets that could be used as the connector). I decided to use a key-shaped medallion to give a more analog feeling.

I build a keyhole that could be used as a base which could hold the (-) hookup wire and connected the (+) hookup wire to the key-shaped medallion. 

Learnings: Electrical conductivity in metals is a result of the movement of electrically charged particles. The atoms of metal elements are characterized by the presence of valence electrons, which are electrons in the outer shell of an atom that are free to move about. It is these 'free electrons' that allow metals to conduct an electric current.

Because valence electrons are free to move they can travel through the lattice that forms the physical structure of a metal. Under an electric field, free electrons move through the metal much like billiard balls knocking against each other, passing an electric charge as they move.