void vStimTask(void *pvParameters) {
  Serial.print("Starting stimulator with pulse width of ");
  Serial.print(pulse_width);
  Serial.print("ms and inter-pulse width of ");
  Serial.print(inter_pulse);
  Serial.println("ms");
  Serial.print("Pulse train length is ");
  Serial.println(pulse_train);
  Serial.flush();

  for( ;; ) {
       for(int i=0; i<=pulse_train; i++) {
         digitalWrite(13, HIGH);
         digitalWrite(12, LOW);
         delay(pulse_width);


         digitalWrite(12,LOW);
         digitalWrite(13,LOW);
         delay(inter_pulse);


         digitalWrite(12, HIGH);
         digitalWrite(13, LOW);
         delay(pulse_width);

       }
  }
}