#define TRIG_PIN 9
#define ECHO_PIN 10
#define RED_LED 6
#define GREEN_LED 5
#define BUZZER 7
long duration;
int distance;
void setup() {
pinMode(TRIG_PIN, OUTPUT);
pinMode(ECHO_PIN, INPUT);
pinMode(RED_LED, OUTPUT);
pinMode(GREEN_LED, OUTPUT);
pinMode(BUZZER, OUTPUT);
Serial.begin(9600);
}
void loop() {
//Trigger ultrasonic pulse
digitalWrite(TRIG_PIN, LOW);
delayMicroseconds(2);
digitalWrite(TRIG_PIN, HIGH);
delayMicroseconds(10);
digitalWrite(TRIG_PIN, LOW);
//R
}