sensmotleo.ino

#include <NewPing.h>

#define TRIGGER_PIN 12 	 // Arduino pin tied to trigger pin on the ultrasonic sensor.
#define ECHO_PIN 11    	 // Arduino pin tied to echo pin on the ultrasonic sensor.
#define MAX_DISTANCE 200 // Maximum distance we want to ping for (in cm). Maximum sensor distance is rated at 400-500cm

NewPing sonar{TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE};  // NewPing setup of pins and maximum distance.

void setup()
{
	delay(3000);
	Serial.begin(115200);  // Open serial monitor at 115200 baud to see ping results.
}
void loop()
{
	delay(30);			// Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.
	unsigned int uS = sonar.ping();	// Send ping, get ping time in microseconds (uS).
	float s = uS*0.034385/2;	// Convert ping time to distance and print result (0 = outside set distance range, no ping echo)
	Serial.println(s);
}