Pedal-Powered Phone Charger

While I was in High School, I decided to spend the spring of my junior year in an independent project. I worked closely with a few faculty advisors to modify a bike to charge a phone from the pedaling. I was very interested in finding and exploring other means of energy, and I thought this would be an interesting concept. By the end of my semester, I had successfully designed and created circuitry to charge a phone from the rotation of the wheels.