Behold the tangled mess of the Heart-Rate Hoodie. Its disorganization might look complicated but is actually very simple. The servos are wired first and foremost to a very small perf board so that they can run from the Arduino more simply (as there is only one 5V pin available, and two grounds). The Pulse Sensor is wired directly into the Arduino. Easy peasy! The whole mess fits snuggly into the front pocket of the hoodie.