The HCSR04 measures object distance using ultrasonic ranging. It offers incredible range accuracy and stable readings in a simple to-use bundle. It ‘s working isn ‘t influenced by daylight or dark material like sharp range discoverers are (delicate materials like fabric can be hard to distinguish).
The fundamental basic principle of operation is beneath, use IO port TRIG to trigger running. It needs 10 us abnormal state signal in any event module will send eight 40kHz square wave automatically and will test if there is any signal returned. In the event that there is signal returned, yield will be abnormal state signal through IO port ECHO. The span of the abnormal state signal is the time from transmitter to getting with the ultrasonic. Testing separation = length of abnormal state x sound velocity(340m/s)/2 You can use the above figuring to discover the separation between the impediment and the ultrasonic module.
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HC-SR04 Ultrasonic Range Finder Distance Sensor Module (Pack of 10)
₹570.0 + Shipping & Taxes
Buy high quality HC-SR04 Ultrasonic Range Finder Distance Sensor Module along with other sensor modules, relays, electronic components, bread boards, transducers and much more online at low price in India
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| Weight | 80 g |
|---|---|
| Dimensions | 10 × 6 × 3 mm |
| Color | Blue |
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const int trigPin = 9;
const int echoPin = 10;
long duration;
int distance;
void setup() {
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
Serial.begin(9600);
}
void loop() {
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = duration * 0.034 / 2;
Serial.print("Distance: ");
Serial.println(distance);
}
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