Simple NewPing Example Sketch

``` // --------------------------------------------------------------------------- // Example NewPing library sketch that does a ping about 20 times per second. // ---------------------------------------------------------------------------

include

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 centimeters). 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() { Serial.begin(115200); // Open serial monitor at 115200 baud to see ping results. }

void loop() { delay(50); // 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). Serial.print("Ping: "); Serial.print(uS / US_ROUNDTRIP_CM); // Convert ping time to distance and print result (0 = outside set distance range, no ping echo) Serial.println("cm"); } ```