User manual

www.sainsmart.com

Example code

const int TrigPin = 2;

const int EchoPin = 3;

float cm;

void setup()

{

Serial.begin(9600);

pinMode(TrigPin, OUTPUT);

pinMode(EchoPin, INPUT);

}

void loop()

{

digitalWrite(TrigPin, LOW); //Low-high-low level sent a short time pulse to TrigPin

delayMicroseconds(2);

digitalWrite(TrigPin, HIGH);

delayMicroseconds(10);

digitalWrite(TrigPin, LOW);

cm = pulseIn(EchoPin, HIGH) / 58.0; //Echo time converted into cm

cm = (int(cm * 100.0)) / 100.0; // retain two decimal places

Serial.print(cm);

Serial.print("cm");

Serial.println();

delay(1000);

}