March 27-April 8, 2018

Over the past two weeks, the Power Puff girls have continued testing and improving the apparatus. In the previous post, the girls discussed the data collected for the collection device and the error associated with it from the control tests. From there, the girls worked on conducting tests for the re-circulation device to ensure the mixing ability. Figure 1 is a video of the device using the 3D printed holder, pulleys, and the Arduino code. The testing was successful as there was visible mixing of the fluid and particles.

Figure 1: A video showing the re-circulation of fluid.

Along with this, the apparatus was made mobile. Legs and wheels were attached to the base of the box. The wheels have a locking mechanism that keeps the device stationary during testing. Also, the collection plate was slightly altered in order to have gravity help the fluid flow through the system. A metallic film was placed around the box to hide the wood and give a more aesthetic appearance. The new design can be seen in Figure 2.

Figure 2: A photographs showing the legs and wheels attached to the box.

This week, the girls will be working on completing the poster, running additional tests, and beginning the final presentation and binder assignments.