This project was completed for my EGR 121 course at Duke University with a team of sixteen students. I collaborated with a subteam of four students to design two sections of a larger, eight-part Harry-Potter themed Rube Goldberg machine. I coded, designed, and soldered a Harry Potter sorting hat circuit, using an Arduino to control an ultrasonic sensor that triggered an LCD screen and RGB LEDs that cycled through Harry Potter houses and their respective colors. I used TinkerCAD for the circuit schematic.