This project demonstrates how to generate, visualize, and get useful insights from real-time sensor data. The concept of this particular project is to track night time (10 pm to 5 am) activity based on the light level in a room. The light could be from the room lights, TV, phone flashlight, etc. The project assumes that there is no activity while the light level is close to zero percent (lit room = 100%). This project can be deployed in an office space, a facility room, a house, etc.