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This is described on my blog: http://boriskourt.com/2013/12/03/wraithguard/
// eltests.ino
unsigned long currentMillis = 0;
unsigned int seed = 10;
unsigned int flickerVariability = 700;
long previousMillis = 0;
long prevSeed = 0;
long prevFlick1 = 0;
long prevFlick2 = 0;
long prevFlick3 = 0;
long interval = 250;
long flickInterval = 700;
long seedInterval = 100;
int xVal = 0;
int yVal = 0;
int zVal = 0;
int mode = 1;
const int xPin = A3;
const int yPin = A4;
const int zPin = A5;
const int wire = 2;
const int pannel = 3;
const int ribbon = 4;
int ribbonStat = HIGH;
int wireStat = HIGH;
int pannelStat = HIGH;
int seedHigh = 0;
int seedLow = 9999;
void setup() {
pinMode(wire,OUTPUT);
pinMode(pannel,OUTPUT);
pinMode(ribbon,OUTPUT);
digitalWrite(wire,HIGH);
digitalWrite(pannel,HIGH);
digitalWrite(ribbon,HIGH);
}
void loop() {
currentMillis = millis();
if(currentMillis - previousMillis > interval) {
previousMillis = currentMillis;
xVal = analogRead(xPin);
yVal = analogRead(yPin);
zVal = analogRead(zPin);
randomSeed(seed);
seed = (xVal + yVal + zVal) / 3;
if(seedHigh < seed) {
seedHigh = seed;
}
if (seedLow > seed) {
seedLow = seed;
}
if (xVal >= yVal && xVal >= zVal) {
mode = 1;
} else if (yVal >= xVal && yVal >= zVal) {
mode = 2;
} else if (zVal >= xVal && zVal >= yVal) {
mode = 3;
} else {
mode = 4;
}
}
//unsigned int test = int(random(20, flickInterval));
if(currentMillis - prevSeed > flickerVariability) {
prevSeed = currentMillis + flickerVariability;
flickInterval = map((random(seed/2, seed * 2)),seedLow / 2, seedHigh * 4, 300,4000);
}
switch (mode) {
case 1:
modeOne();
break;
case 2:
modeTwo();
break;
case 3:
modeThree();
break;
case 4:
modeFour();
break;
}
digitalWrite(wire,wireStat);
digitalWrite(pannel,pannelStat);
digitalWrite(ribbon,ribbonStat);
}
void modeOne() {
if(currentMillis - prevFlick1 > flickInterval) {
prevFlick1 = currentMillis + flickInterval;
if (wireStat == HIGH) {
wireStat = LOW;
pannelStat = HIGH;
} else {
wireStat = HIGH;
pannelStat = LOW;
}
}
ribbonStat = HIGH;
}
void modeTwo() {
if(currentMillis - prevFlick2 > flickInterval) {
prevFlick2 = currentMillis + flickInterval;
if (ribbonStat == HIGH) {
ribbonStat = LOW;
pannelStat = HIGH;
} else {
ribbonStat = HIGH;
pannelStat = LOW;
}
}
wireStat = HIGH;
}
void modeThree() {
if(currentMillis - prevFlick3 > flickInterval) {
prevFlick3 = currentMillis + flickInterval;
if (pannelStat == HIGH) {
pannelStat = LOW;
wireStat = HIGH;
} else {
pannelStat = HIGH;
wireStat = LOW;
}
}
ribbonStat = HIGH;
}
void modeFour() {
wireStat = HIGH;
pannelStat = HIGH;
ribbonStat = HIGH;
}
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