Smart Blink Stick

CODE

 

Make sure you download NewPing library before you code.

 

 

 

// ---------------------------------------------------------------------------

// Example NewPing library sketch with buzzer alert if object is within 10 cm

// ---------------------------------------------------------------------------

 

#include <NewPing.h>

 

#define TRIGGER_PIN  2     // Arduino pin tied to trigger pin on the ultrasonic sensor.

#define ECHO_PIN     3     // Arduino pin tied to echo pin on the ultrasonic sensor.

#define MAX_DISTANCE 200   // Maximum distance to ping for (in centimeters).

#define BUZZER_PIN   7     // Buzzer pin

 

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup

 

void setup() {

  pinMode(BUZZER_PIN, OUTPUT);       // Set buzzer pin as output

  Serial.begin(115200);              // Start serial monitor

}

 

void loop() {

  delay(50);                         // Wait 50ms between pings

  unsigned int distance = sonar.ping_cm();  // Perform one ping and get distance in cm

 

  Serial.print("Ping: ");

  Serial.print(distance);

  Serial.println(" cm");

 

  if (distance > 0 && distance <= 10) {

    digitalWrite(BUZZER_PIN, HIGH);  // Turn buzzer on

  } else {

    digitalWrite(BUZZER_PIN, LOW);   // Turn buzzer off

  }

}