This project is supposed to show the use of an Arduino measuring the frequency of something happening in the world. My project specifically is measuring how often I open the door to my dorm room to leave or come back. Every second, the ultrasonic sensor is measuring the distance between it and the wall with the door on one side of it. Whenever the door opens, it makes the distance it detects shorter, causing a different measurement. When that measurement is below a certain number, my project says that it detected something pass by, which is will most likely be the door opening/closing, and this goes on in 10 minute intervals. After running the program for 24 hours, there were a few things that I noticed. The first one being that most of the day, from the morning to around 4, there would be no activity. The second is that for the next few hours afterwards, there would be more activity during that time than the rest of the 24 hours combined, and then stop. This made me come to the conclusion that I am most often in and out of my room during that time after 4 pm, when I am no longer in my classes, and I am still active to do things before I go to bed.