gistfile1.ino

/*
 *  stepper pins
 */
int Pin0 = 2;
int Pin1 = 3;
int Pin2 = 4;
int Pin3 = 5;

int timeout = 1;

int _step = 0;

int dir = LOW; // I use it as a HIGH/LOW check later, so this makes more sense in my head

int motorpos[9][4] = {
	{0,0,0,1},
	{0,0,1,1},
	{0,0,1,0},
	{0,1,1,0},
	{0,1,0,0},
	{1,1,0,0},
	{1,0,0,0},
	{1,0,0,1},
	{0,0,0,0} // no state
};

void setup() {
	/*
	 *	Settintg up the output pins
	 */
	pinMode(Pin0, OUTPUT);
	pinMode(Pin1, OUTPUT);
	pinMode(Pin2, OUTPUT);
	pinMode(Pin3, OUTPUT);
}

void loop() {
	// some shit 
	// if ( digitalRead(blah) ) dir = HIGH
	moveMotor();
}

void moveMotor() {
	/*
	 *	basically we need to pulse through a pattern to move the motor. sucks doesn't it. 
	 */
	digitalWrite(Pin0, motorpos[_step][0]);
	digitalWrite(Pin1, motorpos[_step][1]);
	digitalWrite(Pin2, motorpos[_step][2]);
	digitalWrite(Pin3, motorpos[_step][3]);
	/*
	 * just toggle dir from LOW to HIGH or vice versa and you'll change directions.
	 */
	if(dir == HIGH) {
		_step++;
	} else {
		_step--;
	}
	if(_step>7) {
		_step=0;
	}
	if(_step<0) {
		_step=7;
	}

	delay(timeout); // speed of the 'steps' 
}