Hakan: Skapade sidan med 'Kodexempel

 //Defining the pins and variables const int trigPin = 27; const int echoPin = 13; const int freq = 2000; const int channel = 0; const int resolution = 8;   l...'

2019-12-02T22:12:16Z

Skapade sidan med 'Kodexempel <pre> //Defining the pins and variables const int trigPin = 27; const int echoPin = 13; const int freq = 2000; const int channel = 0; const int resolution = 8; l...'

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Kodexempel

<pre>
//Defining the pins and variables
const int trigPin = 27;
const int echoPin = 13;
const int freq = 2000;
const int channel = 0;
const int resolution = 8;

long duration;
long distance;

void setup() {
//Initiate serial monitor
Serial.begin (9600);

//Specifies the pins behavior
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);

ledcSetup(channel, freq, resolution);
ledcAttachPin(12, channel);
ledcWrite(channel, 10);
}

void loop() {
//Sending a LOW pulse to clear the trigPin
//and sets the trigger to a HIGH pulse for 10 microseconds
digitalWrite(trigPin, LOW);
delayMicroseconds(5);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);

//Reads the echoPin and the time it
//took for the HIGH pulse to return
duration = pulseIn(echoPin, HIGH);

//Calculating the distance in cm
distance = (duration/2) / 29.1;

//Checking to see if the discance is less than 400
//to avoid getting alerts when object is out of range.
if(distance < 400){
Serial.print("distance: ");
Serial.println(distance);
ledcWriteTone(channel, distance);
}

delay(200);
}
</pre>

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Hakan: Skapade sidan med 'Kodexempel
//Defining the pins and variables const int trigPin = 27; const int echoPin = 13; const int freq = 2000; const int channel = 0; const int resolution = 8; l...'