Process

I began this project by understanding the user's problems and creating a schematic to outline the problem statement. Following that, I conducted research to learn about the sensors that I would need to accomplish the goal of this project. Based on my research, I learned that I needed to use a Hall effect sensor to check for the open and closed state of the toy box and an ultrasonic range finder to check for a hand being inserted into the box. I briefly considered using a photo-resistor to check for the box being opened but found that it could give false data for toys that light up and the hall effect sensor would be more accurate. I encountered challenges in the executing the code with the hall effect sensor. I fixed this issue with the help of Prof. Daragh who recommended the use of an 'interrupt' to measure the change of state for the hall effect sensor.