I built Productivity Pen with two friends over two days at Calhacks 2016. Deep in midterm season, we decided that increasing productivity was the problem we wanted to tackle. We brainstormed potential solutions and eventually, based on the amount of time we had and the parts we had readily available, we decided to create a smart pen topper. The topper held a start button, LED, and accelerometer which recorded user movement. Through calibration and testing we programmed our Arduino to characterize motions as either working, fidgeting, or stalling. We’ve open-sourced our code here. See below for project pictures!