Скачать или смотреть Arduino Tutorial #11 Buzzer with Ultrasonic sensor

Arduino Tutorial #11 Buzzer with Ultrasonic sensor
Scroll down for code.....
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LIST OF COMPONENT (affiliate links)

http://amzn.to/2fvSRJq (Arduino)
http://amzn.to/2uKfEDf (Piezo buzzer)
http://amzn.to/2vmUlLw (Ultrasonic sensor)
http://amzn.to/2wxPmWz (Breadboard)
http://amzn.to/2vJ3lvo (Jumper wire)

#define trigPin 13
#define echoPin 12
void setup() {
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
}

void loop() {
long duration, distance;
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
//instead of parenthesis () put angle bracket as YouTube description does not allow angle bracket
if (distance (= 10){
tone(9,400,100);
}
else {
noTone(9);
}
delay(50);
}