   pinMode(9, OUTPUT); 
   pinMode(10, OUTPUT); 
   pinMode(11, OUTPUT); 
+  pinMode(coila1, OUTPUT); 
+  pinMode(coila2, OUTPUT); 
+  pinMode(coilb1, OUTPUT); 
+  pinMode(coilb2, OUTPUT); 
+
   //init serial
   Serial.begin(9600);
 }
 
 void loop() {
 
+  
+// stepper experiments. Commented out for now
+//for (int i=0; i <= 255; i++){
+
+//digitalWrite(coila1, HIGH); 
+//digitalWrite(coila2, LOW); 
+//digitalWrite(coilb1, LOW); 
+//digitalWrite(coilb2, LOW); 
+//delay(mdelay); 
+
+//digitalWrite(coila1, LOW); 
+//digitalWrite(coila2, LOW); 
+//digitalWrite(coilb1, HIGH); 
+//digitalWrite(coilb2, LOW); 
+//delay(mdelay); 
+
+//digitalWrite(coila1, LOW); 
+//digitalWrite(coila2, HIGH); 
+//digitalWrite(coilb1, LOW); 
+//digitalWrite(coilb2, LOW); 
+//delay(mdelay); 
+
+//digitalWrite(coila1, LOW); 
+//digitalWrite(coila2, LOW); 
+//digitalWrite(coilb1, LOW); 
+//digitalWrite(coilb2, HIGH); 
+//delay(mdelay); 
+//}
+
+//digitalWrite(coila1, LOW); 
+//digitalWrite(coila2, LOW); 
+//digitalWrite(coilb1, LOW); 
+//digitalWrite(coilb2, LOW); 
+  
 // some info on PWM here: http://www.uchobby.com/index.php/2008/02/12/arduino-analog-gauge/
 // need to add resistors
  if (Serial.available() > 0) {

  
  This code is in the public domain.
 */

void setup() {                
  // initialize the digital pin as an output.

    int cpu = Serial.parseInt();
    int ram = Serial.parseInt();    
    int net = Serial.parseInt(); 

    if (Serial.read() == '\n') {
      
      if (cpu >= 0) {
