Digital Measuring Cup
Description
Too lazy to use more than one measuring cup? Unable to read the markings on a measuring cup? Think it's more practical to hook a computer up and pour liquids nearby? If you answered yes to all of the above, I've got a useless device for you!
The digitial measuring cup. Pour water into it, and the visual display will show you how much has been filled.
Disclaimer: It's not finely calibrated, at all 
Materials:
- Analog input device (Force Sensitive Resistor)
- A Measure Cup
- Museum Gel to increase contact between cup and resistor
/* Ardunio Code to get input from analog sensors */
const int input1 = A0; // sensor to control red color
const int input2 = A1; // sensor to control green color
const int input3 = A2; // sensor to control blue color
void setup()
{
Serial.begin(9600);
}
void loop()
{
Serial.print(analogRead(input1));
Serial.print(",");
Serial.print(analogRead(input2));
Serial.print(",");
Serial.println(analogRead(input3));
}
/* Tim's Code to make Analog 1 data translate into a visual display
Adapted from:
http://www.arduino.cc/en/Tutorial/VirtualColorMixer
created 2 Dec 2006
by David A. Mellis
modified 4 Sep 2010
// by Tom Igoe and Scott Fitzgerald
*/
import processing.serial.*;
float analogInput = 0; // From Analog
Serial myPort;
void setup() {
size(300, 300);
noStroke();
fill (40,40,40);
ellipse(150,150,299,299);
// List all the available serial ports
println(Serial.list());
// I know that the first port in the serial list on my mac
// is always my Arduino, so I open Serial.list()[0].
// Open whatever port is the one you're using.
myPort = new Serial(this, Serial.list()[0], 9600);
// don't generate a serialEvent() unless you get a newline character:
myPort.bufferUntil('\n');
}
void draw() {
// set the background color with the color values:
fill (40,40,40);
ellipse(150,150,299,299);
fill (204,100,40);
arc(150, 150, 299, 299, PI/2, analogInput);
}
void serialEvent(Serial myPort) {
// get the ASCII string:
String inString = myPort.readStringUntil('\n');
if (inString != null) {
// trim off any whitespace:
inString = trim(inString);
// split the string on the commas and convert the
// resulting substrings into an integer array:
int [] fraction = int (split(inString, ","));
// if the array has at least three elements, you know
// you got the whole thing. Put the numbers in the
// color variables:
if (fraction.length >=3) {
// map them to the range 0-255:
analogInput = map(fraction[0], 0, 1023, 0, 2.5*PI);
}
}
}
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