The Emotion Lighthouse is a transformation and electrification of a project my client did. Her project is about emotions changing from glumness and depression to joy, represented by movement through a colorful forest path. My goal was to capture the essence of that in a new form. In my project, the path takes the form of a spiral staircase up the Lighthouse, adorned by paper, the colors of which represent different places on this emotion gradient. When the user presses a button, lights illuminate the gloomy base of the lighthouse. Then, through the power of Arduino, the light travels around and up the lighthouse, illuminating the present emotion.