Today, we worked on the mixing buddy, and encountering several problems, we finally found what was wrong: The breadboard did not have power on ground! We added 5 volts AND ground to te breadboard, and Whadaya know? It worked! We also updated our code a bit.
The link to our Gist on github is here!!!
We also started soldering the accessibility switch. We are using a male and female headphone jacks, and know the switch is more accessible.