Well, not exactly HER brain, per-say. However, it is her brain for her science project on the brain. She’s in junior high now (reserve your old-man jokes now), so she has lofty projects from here on out. Cat had to demonstrate ten parts of the brain, so we built it … electronics style.
An Arduino is the main chunk of the brain, running the LEDs, via optocouplers, to allow a low and high side to the circuit. 9v is running the high side, while the low-side is stepped down to 5v by the Arduino. I think, it’s an elegant solution to Emerystein’s Monster!
Gallery and code follow:
#Arduino code
const int ONE = 0;
const int TWO = 1;
const int THREE = 2;
const int FOUR = 3;
const int FIVE = 4;
const int SIX = 5;
const int SEVEN = 6;
const int EIGHT = 7;
const int NINE = 8;
const int TEN = 9;
const int ELEVEN = 10;
const int BUTTON = 11;
int countUp = 0;
int buttonState = LOW;
int pressedButton = 0;
long lastDebounceTime = 0;
long debounceDelay = 200;
const int SYNONE = 50;
long blinkOne = 0;
const int SYNTWO = 100;
long blinkTwo = 0;
void setup() {
writeLow();
pinMode(ONE, OUTPUT);
pinMode(TWO, OUTPUT);
pinMode(THREE, OUTPUT);
pinMode(FOUR, OUTPUT);
pinMode(FIVE, OUTPUT);
pinMode(SIX, OUTPUT);
pinMode(SEVEN, OUTPUT);
pinMode(EIGHT, OUTPUT);
pinMode(NINE, OUTPUT);
pinMode(TEN, OUTPUT);
pinMode(ELEVEN, OUTPUT);
pinMode(BUTTON, INPUT);
}
void loop() {
synFire();
if (buttonPressed())
{
brainMode(countUp);
countUp++;
if (countUp >= 12) {
countUp = 0;
writeLow();
}
}
}
void synFire() {
if (countUp == 11)
{
int randOne = random(ONE, ELEVEN);
int randTwo = random(ONE, ELEVEN);
unsigned long firstFire = millis();
if ((firstFire - blinkOne) > SYNONE) {
blinkOne = firstFire;
brainMode(randOne);
digitalWrite(ELEVEN, HIGH);
}
if ((firstFire - blinkTwo) > SYNTWO) {
blinkTwo = firstFire;
brainMode(randTwo);
digitalWrite(ELEVEN, HIGH);
}
}
}
boolean buttonPressed() {
boolean state = false;
buttonState = digitalRead(BUTTON);
if (pressedButton == 0) {
if ((millis() - lastDebounceTime) > debounceDelay)
{
if (buttonState == HIGH) {
state = true;
lastDebounceTime = millis();
pressedButton = 1;
}
}
}
if (pressedButton == 1 && buttonState == LOW) {
pressedButton = 0;
}
return state;
}
void brainMode(int mode) {
writeLow();
switch(mode) {
case ONE:
digitalWrite(ONE, HIGH);
digitalWrite(TWO, HIGH);
digitalWrite(TEN, HIGH);
break;
case TWO:
digitalWrite(TWO, HIGH);
break;
case THREE:
digitalWrite(THREE, HIGH);
break;
case FOUR:
digitalWrite(FOUR, HIGH);
break;
case FIVE:
digitalWrite(FIVE, HIGH);
break;
case SIX:
digitalWrite(SIX, HIGH);
break;
case SEVEN:
digitalWrite(SEVEN, HIGH);
break;
case EIGHT:
digitalWrite(EIGHT, HIGH);
break;
case NINE:
digitalWrite(NINE, HIGH);
break;
case TEN:
digitalWrite(TEN, HIGH);
break;
case ELEVEN:
digitalWrite(ELEVEN, HIGH);
break;
}
}
void writeLow()
{
digitalWrite(ONE, LOW);
digitalWrite(TWO, LOW);
digitalWrite(THREE, LOW);
digitalWrite(FOUR, LOW);
digitalWrite(FIVE, LOW);
digitalWrite(SIX, LOW);
digitalWrite(SEVEN, LOW);
digitalWrite(EIGHT, LOW);
digitalWrite(NINE, LOW);
digitalWrite(TEN, LOW);
digitalWrite(ELEVEN, LOW);
}