MARK MA
HCDI - Portfolio
Final Project - Drop
Emily, Luis, Mark, Nathan

Problem Statement
Showers are typically the third largest use of water in the home. Our team’s goal is to encourage people to reduce their water consumption through a monitoring system. A Bluetooth tablet detects when the person starts showering, records showering time and water usage, and relays this information to the user. To incentivize this experience, we integrated Spotify/Apple Music into the system so that the user doesn’t need to bring a speaker or phone to the bathroom. Additionally, it allows users to compete with their friends on the same system. Users are also aware of the environmental impact of the water they saved from showering.
Drop - Design Solution
Our final design was an ironed-out version of the second concept. It contains an internal battery, low-flow showerhead, screen to monitor real-time showering data, a turbine to charge the battery and monitor water flow, and a solenoid valve to control water flow. Additionally, in our final design, we added a Bluetooth speaker, proximity sensor, and flexible arm. This Bluetooth speaker would allow users to play music through them, and it would also allow for auditory alerts for when the shower is approaching its end. The proximity sensor would allow for modulation of the flow depending on whether or not the user is within the showerhead’s line of sight. If the user is outside of the showerhead’s range, it will shut off the shower, preventing the waste of water. When the user steps back into the showerhead’s line of sight, it will resume water flow. The device also includes buttons that allow the user to pause, rewind or skip songs. Lastly, the internal thermometer monitors water temperature, so that when the user is waiting for the shower to warm up, it will automatically shut off water flow when the desired temperature is reached. This is also used to shut off the flow when water temperatures reach a dangerous level, preventing burns from high water temperatures.





Productivity App
