Pulsinator.ino

/*
 * Arduino Pulsinator for Andre by Adam
 * Direction pin is controlled directly by a switch, no code needed
 */

#define A_IN A0     // 10K linear pot wiper
#define P_OUT 5     // pulse output pin (digital 5)

bool pulseState = false;        // pulse pin will be one of high or low
unsigned long nextUpdate = 0;   // schedule variable to track when tasks
                                // should be done (in milliseconds)

// setup() happens only once when
// the arduino is first turned on
void setup() {
  pinMode(A_IN, INPUT);         // setup analog input
  pinMode(P_OUT, OUTPUT);       // setup digital output
}

// loop() happens over and over
void loop() {
  if(nextUpdate <= millis()) {       // Do we need to do tasks?

    pulseState != pulseState;        // Toggle the pin state
    digitalWrite(P_OUT, pulseState); // Send the new pin state

    nextUpdate = millis() + (analogRead(A_IN)/4096); // schedule the next
                                                     // time to do stuff
  }
}