// IF-THEN INTERACTIVITY 01
//
// Testing for a value as it changes to
// trigger interativity

// pin variable
int p1 = 11;  // These can be anything we want. my board
int p2 = 10;  // just happens to be set up with PWM pins...
int p3 = 9;
int p4 = 6;
int p5 = 5;
int p6 = 3;
// variables to hold values to test for
int lightVal = 0;  
int minVal = 70;  // Last time I tested, my range from the 
int maxVal = 240; // photoresistor was 70 to 245. I'll use
                  // these min and max variables to divide 
                  // the lightVal into 6  even parts

//Setup
void setup() {                 
  Serial.begin(9600);        
  // Set pins to output
  pinMode(p1, OUTPUT); pinMode(p2, OUTPUT); pinMode(p3, OUTPUT); 
  pinMode(p4 ,OUTPUT); pinMode(p5 ,OUTPUT); pinMode(p6, OUTPUT);   
}

// Das Loop...
void loop() {
 // On every loop, read the value of the lignt sensor on analog 
 // pin 4. I know that with my hardware setup I get values from 
 // around 70 to 245.
 lightVal = analogRead(4);
 Serial.println(lightVal); 
 // Test for increasing values and turn on the six lights as they get higher.
 // LED 1
 if(lightVal - minVal > maxVal/6) {
   digitalWrite(p1,HIGH);
 }else{
   digitalWrite(p1,LOW);
 }
 // LED 2
 if(lightVal - minVal > ((maxVal - minVal) * 2)/6) {
   digitalWrite(p2,HIGH);
 }else{
   digitalWrite(p2,LOW);
 }
 // LED 3
 if(lightVal - minVal > ((maxVal - minVal) * 3)/6) {
   digitalWrite(p3,HIGH);
 }else{
   digitalWrite(p3,LOW);
 }
 // LED 4
 if(lightVal - minVal > ((maxVal - minVal) * 4)/6) {
   digitalWrite(p4,HIGH);
 }else{
   digitalWrite(p4,LOW);
 }
 // LED 5
 if(lightVal - minVal > ((maxVal - minVal) * 5)/6) {
   digitalWrite(p5,HIGH);
 }else{
   digitalWrite(p5,LOW);
 }
 // LED 6
  if(lightVal - minVal > (maxVal - minVal)) {
   digitalWrite(p6,HIGH);
 }else{
   digitalWrite(p6,LOW);
 }
}