In my Junior Year, the design class had students work on an Arduino-specific project that was to use three different types of input and outputs, to create a useful product that takes into consideration user interface design and is documented appropriately in the form of a report.

The approach I took was to create a digital proximity reader that is able to record and display the most recent measurement (in inches and centimetres) and has the ability to notify when the previously recorded reading has been reached. This allowed the device to effectively be used as a digital tape measure.