Week 6

Summary:

• Redesigned jaw
• Sensor problem solved
• Clay model done
• Plaster applied
• String force testing
• Servos and Ultrasonic sensors connected
• Mist machine apparatus set up

Welcome back!

The original 3-D printed jaw looked great and fit the ultrasonic sensors perfectly as intended, however Kate was afraid the latex mask will not stretch an extra half inch. So to be safe, Gary redesigned the jaw's dimensions to fit her latex masks dimensions. He will submit the 3-D print request soon. 

We finally figured out how to solve the problem of controlling two LEDs with two sensors. Ultimately, we ended up controlling two LEDs with one Arduino pin port and one sensor to dictate when these lights are high or low. Connecting the LEDs in parallel was the trick we were missing. 

Kate finished the long awaited clay model of the head! It looks fantastic; Game of Thrones props people could take some pointers from Kate for their dragons. 

Today in lab, Kate began and finished applying the plaster on the clay model to get a clean mold. It was a very messy process, but it is finished now. We used a two part plaster to one part water mixture, as in 2 pounds of powder for every 1 pound of water.

 Peter started using the Mark-10 in the lab to test the maximum force that could be applied a certain string. This string will be used to control the jaw and this testing puts some restraint on how much force someone applies when they pull their hand out of the jaw very fast. Here is a sample of how a load vs time graph.

Arjun and Gary put the ultrasonic code together with the servo code and got a basic algorithmic sequence going, where one action causes another.

Finally, James created the mist maker apparatus for Mario, hot gluing the tubing to the lid and the fan to the lid. In James's words, it is an "Ultrasonic Mist-Making Delivery Device"