Sensing Part 2: Force Sensitive Resistors and Photocells

For this assignment i used a force sensitive resistor to modify the input and read the serial input via an arduino and used processing software to produce some visualization.
I modified the code which was available with the software to control the force applied on a spring and visualized the elongation and compression of a spring with a force sensor that was wrapped in cotton ball to disperse the force.
Attached the images and the code files. and here is the link to the video.
https://www.dropbox.com/s/n8mi38osa5lgck9/VID_20131006_121030.mp4

Description:
I decided to use the FSR as an input measurement for stress of a person, and then used it shower them with LOVE! The user will press the stress ball really hard if he is under stress and then the visualization which is written in Processing will fill his screen with hearts. The hearts get darker and bigger as the stress increases. I also experimented with a doll, because babies clench dolls really hard when they play with them and this can be used to show their parents a visualization of their activity.
 
Components:
1 Breadboard

Description:
In this lab we had to consider how to use the FSR to vary the visual output using Processing. I decided to vary the color of the circles more differently with varying pressure: light pressure to harder pressure ranges from the colors pink to red to purple to blue. 

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Description
For the pressuer diffuser, I firstly tried to tape the pressuer sensor to my wrist hoping it would read my pulse and output value accordingly. But that didn't work so well as the pulse is too subtle to measure. My current design is gluing two cotton swabs at one end and let other ends press against each other with the pressure sensor in between, a little similar to the way chopsticks work. 

For this assignment, I tried to create a trigger that would tell a user when stressed or elated to have a beer. Using force sensors (embedded within a force diffuser) I created an application which once squeezed would tell you how much beer to have. If you are at the extremes (very angry or very happy) you deserve a full beer mug, whereas if you are somewhere in between you are going to have to make do with a partial beer mug. 

Description
We continue our exploration of input devices with force sensitive resistors and photocells. Using these new devices requires implementation of trivial circuits involving the analog pin of the Arduino in parallel with a 10k ohm resistor connected to either the FSR or photocell. In this lab, we were tasked with two goals:
1) Use the Processing programming language to retrieve data from the Arduino via serial communication and create some visualization from the data created from the input devices.

Description
Arduino Color Size Pressure Detector
This Lab uses Processing to draw a ball on the screen, size depending on a random selection of an input device.
A Potentiometer (Pot) and a Force Sensitive Resistor (FSR) provides serial values. As the serial port begins to recognize values, the first input device READ will be considered the SIZE changer, the second will be the COLOR ("FILL") changer. Processing receives their ASCII number (for voltage) over the serial port, terminating with a carriage return (ascii 13) then newline (10).

Description:

Description:
I attempted to use the force sensor to do something really interesting, but I was having difficulties with my circuit.  I think what needs to happen is that my arduino code needs to be stored on the input so that another program can run on the output.  For some reason, this did not work out the way I had hoped.
Materials:
FSR
Arduino Board
Breadboard
Wires
LED light
 
Code: