Ardunino 倒車雷達

電路圖

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影片

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程式碼

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	const int trig = 5;
	const int echo = 4;
	int buzzerPin = 3;//蜂鳴器
	const int inter_time = 100;
	int time = 0;
	void setup() {
	Serial.begin(9600);
	pinMode (trig, OUTPUT);
	pinMode (echo, INPUT);
	pinMode (buzzerPin, OUTPUT);
	}
	void loop() {
	float duration, distance;
	digitalWrite(trig, HIGH);
	delayMicroseconds(100);
	digitalWrite(trig, LOW);
	duration = pulseIn (echo, HIGH);
	distance = (duration/2)/29;
	Serial.print("Data:");
	Serial.print (time/100);
	Serial.print(", d = ");
	Serial.print(distance);
	if(distance<10){
	digitalWrite (buzzerPin, HIGH);
	delay (5);
	digitalWrite (buzzerPin, LOW);
	delay (5);
	}
	else
	{
	digitalWrite (buzzerPin, HIGH);
	delay (100);
	digitalWrite (buzzerPin, LOW);
	delay (100);
	}
	Serial.println(" cm");
	time = time + inter_time;
	delay(inter_time);
	}

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