This video is a walk-through of the "Dealing with Diabetes: The Road to Developing an Artificial Pancreas" project at Science Buddies: https://www.sciencebuddies.org/science-fair-projects/project-ideas/HumBio_p040/human-biology-health/developing-an-artificial-pancreas. In this project, you will use an Arduino to design an automatic feedback control system using tap water and distilled water to model the behavior of insulin and blood in the human body. See the link above for a complete materials list, circuit diagram, example code, and written instructions.