zackhaikal

/* HC-SR04 Sensor
   https://www.dealextreme.com/p/hc-sr04-ultrasonic-sensor-distance-measuring-module-133696
  
   This sketch reads a HC-SR04 ultrasonic rangefinder and returns the
   distance to the closest object in range. To do this, it sends a pulse
   to the sensor to initiate a reading, then listens for a pulse 
   to return.  The length of the returning pulse is proportional to 
   the distance of the object from the sensor.
     
   The circuit:

zackhaikal

#define SIO_C 2
#define SIO_D 4
#define SIO_CLOCK_DELAY 100

void setup()
{
  pinMode(8,OUTPUT);
  
//  while(1)
//  {