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Arduino Ultrasonic Module HC-SR04 Distance Measuring

    Arduino Ultrasonic Module HC-SR04 Distance Measuring

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    Product ID : 211161709 Conditions : New


    Arduino Ultrasonic Module HC-SR04 Distance Measuring

    Description:
    Working Voltage : 5V(DC)
    Static Current: Less than 2mA.
    Output Signal: Electric frequency signal, high level 5V, low level 0V.
    Sensor Angle: Not more than 15 degrees.
    Detection Distance: 2cm-450cm.
    High Precision: Up to 0.3cm
    Input Trigger Signal: 10us TTL impulse
    Echo Signal : output TTL PWL signal
    Mode of connection:
    VCC
    trig(T)
    echo(R)
    GND
    Use method:
    Supply module with 5V, the output will be 5V while obstacle in range, or 0V if not.The out pin of this
    module is used as a switching output when anti-theft module, and without the feet when ranging modules.
    Note : the module should be inserted in the circuit before been power, which avoid producing high level
    of misoperation;if not, then power again.
    Module Working Principle:
    1.Adopt IO trigger through supplying at least 10us sequence of high level signal.
    2.The module automatically send eight 40khz square wave and automatically detect whether receive
    the returning pulse signal.
    3.If there is signals returning, through outputting high level and the time of high level continuing is
    the time of that from the ultrasonic transmitting to receiving. Test distance =(high level time * sound velocity (340M/S) / 2.
    Note : This module is not suitable to connect with electric power, if you need to connect this module with
    electronic power,then let the GND terminal of this module to be connected first,otherwise, it will affect the
    normal work of the module

    Package Included:
    1 x HC-SR04 Ultrasonic Module Distance Measuring Transducer

    Sample code

    int TRIG = 12;

    int ECHO = 13;

    void setup() {

    Serial.begin(9600);

    }

    void loop(){

    int distance;

    float time ;

    pinMode(TRIG, OUTPUT);

    //Start Pulse

    digitalWrite(TRIG,LOW); // LOW

    delay (0.002);

    digitalWrite(TRIG,HIGH); // HIGH

    delay (0.005);

    digitalWrite(TRIG,LOW); // LOW

    //Measuring the time of the pulse when is it HIGH

    pinMode(ECHO, INPUT);

    unsigned long ulPing = pulseIn (ECHO, HIGH);

    if (ulPing == 0 && digitalRead(ECHO) == HIGH) {

    pinMode(ECHO, OUTPUT);

    Serial.println("timeout");

    digitalWrite(ECHO, LOW);

    delay(100);

    pinMode(ECHO, INPUT);

    }

    //Calculating the distance

    distance = ulPing/58;

    //Printing the distance

    Serial.print (distance);

    Serial.println("cm");

    delay(100);

    }

    Last Updated @ 12/18/2015 12:34:14 PM


    Last Updated @ 1/27/2016 10:00:20 AM


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