March Madness Challenge - Day 16

Wired and ADXL335 accelerometer to RGB leds. Thought neat I've got a simple program. Oops, the only difference between the Joystick controlled RGB LED was that I was measuring X, Y, and Z axis. Three variable between two programs. Yikes, that sounds a lot like a rule violation. So in the last few minutes I've added self calibration to the device. I didn't have time to work out the math and turn the numbers into something meaning so I did something to make it more meaningful to an LED. x, y, and z max and min values are now checked and set so depending on the most recent max and mins the widest led action occurs.

/*
* Accelerometer  controlled red, green, blue leds
* ADXL35
*/


int redPin = 9;    // LED connected to digital pin 9
int greenPin = 10;
int bluePin = 11;
int Z = 0;
int Y = 1;
int X = 2;
int r,g,b = 0;
int xmax, ymax, zmax = 0;
int xmin, ymin, zmin = 1024;

void rgb (int r, int g, int b) 
{
     analogWrite(redPin, r);
     analogWrite(greenPin, g);
     analogWrite(bluePin, b);
     
}

void setup()  { 
  Serial.begin(9600);
  Serial.println("Setup done");
} 


void loop()  {

  r = analogRead(Z);
  g = analogRead(Y);
  b = analogRead(X);
 
  xmin = min(xmin, b);
  ymin = min(ymin, g);
  zmin = min(zmin, r);
  
  xmax = max(xmax, b);
  ymax = max(ymax, g);
  zmax = max(zmax, r);
  /*
  Serial.print("xmin: ");
  Serial.print(xmin);
  Serial.print(", xmax: ");
  Serial.print(xmax);
  Serial.print(" ymin: ");
  Serial.print(ymin);
  Serial.print(", zmax: ");
  Serial.println(zmax);
  */  
  
  
  r = map(r, zmin, zmax, 0, 255);
  g = map(g, ymin, ymax, 0, 255);
  b = map(b, xmin, xmax, 0, 255);
      
  rgb(r, g, b);
  /*
  Serial.print(r);
  Serial.print(", ");
  Serial.print(g);
  Serial.print(", ");
  Serial.println(b);
 */
        
}