55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
#define DISTANCE 15
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// defines pins numbers
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const int trigPin = 2; //D4
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const int echoPin = 0; //D3
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// defines variables
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long duration;
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int distance;
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int bool1 = 0;
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void setup() {
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pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
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pinMode(echoPin, INPUT); // Sets the echoPin as an Input
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Serial.begin(9600); // Starts the serial communication
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}
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void loop() {
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// Clears the trigPin
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digitalWrite(trigPin, LOW);
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delayMicroseconds(2);
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// Sets the trigPin on HIGH state for 10 micro seconds
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digitalWrite(trigPin, HIGH);
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delayMicroseconds(10);
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digitalWrite(trigPin, LOW);
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// Reads the echoPin, returns the sound wave travel time in microseconds
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duration = pulseIn(echoPin, HIGH);
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// Calculating the distance
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distance = duration * 0.034 / 2;
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// Prints the distance on the Serial Monitor
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if (bool1 == 0) {
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//if ((distance != (DISTANCE - 1)) && (distance != (DISTANCE)) && (distance != (DISTANCE + 1))) { //+-1
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if(((DISTANCE+2)<distance)|| ((DISTANCE-2)>distance)){ //darf +- 2 um festgelegte entfernung schwanken, um störungen herauszufiltern
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Serial.print("Motion detected: ");
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Serial.println(distance);
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bool1 = 1;
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}
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}
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else if(bool1==1){
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if(((DISTANCE+2)<distance)|| ((DISTANCE-2)>distance)){ //darf +- 2 um festgelegte entfernung schwanken, um störungen herauszufiltern
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Serial.print("Still motion detected: ");
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Serial.println(distance);
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}
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else{
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//Flag wieder auf 0
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bool1=0;
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}
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}
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delay(100);
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}
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