Week 9 - Preparing for the presentation

We met outside of class to make a video for the final presentation. We brainstormed our ideas of how long we wanted the video to be, and what would be the most simple, yet effective way of showing that out product works. One group member volunteered to wear the shoe and walk during the presentation, while another member would film the multi-meter and a third member would film the entire act. Before filming, the piezo crystals on the shoe sole were adjusted according the member's foot map to increase the mechanical energy input on them. The initial voltage reading was noted down and the person walked for 2 minutes and then the final voltage reading was read. An increase of 0.01 V was obtained, from 0.26 to 0.27 Volts. That was a success for the group. Because if the person keeps on applying the same pressure on the shoe for 4 hours, they will fully charge the battery, assuming it is an ideal system. The figure below shows the team members making some fianl adjustments before filming the video for presentation.

Figure 1: A team member placing the rechargeable battery in the case before testing and filming.