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Elegoo HC-SR04 Ultrasonic Module Distance Sensor - Equation?

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  • Elegoo HC-SR04 Ultrasonic Module Distance Sensor - Equation?

    I've got 5x of these I'm playing with.

    Everything is connected and configured -> plugin sees my board, reads the sensor, etc.

    I'm trying to figure out how to (properly) configure the output and input for the distance sensor.

    Here's how it is coded in an Arduino sketch (AKA hello world for this sensor):

     * created by Rui Santos,
     * Complete Guide for Ultrasonic Sensor HC-SR04
        Ultrasonic sensor Pins:
            VCC: +5VDC
            Trig : Trigger (INPUT) - Pin11
            Echo: Echo (OUTPUT) - Pin 12
            GND: GND
    int trigPin = 11;    //Trig - OUTPUT
    int echoPin = 12;    //Echo - INPUT
    long duration, cm, inches;
    void setup() {
      //Serial Port begin
      Serial.begin (9600);
      //Define inputs and outputs
      pinMode(trigPin, OUTPUT);
      pinMode(echoPin, INPUT);
    void loop()
      // The sensor is triggered by a HIGH pulse of 10 or more microseconds.
      // Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
      digitalWrite(trigPin, LOW);
      digitalWrite(trigPin, HIGH);
      digitalWrite(trigPin, LOW);
      // Read the signal from the sensor: a HIGH pulse whose
      // duration is the time (in microseconds) from the sending
      // of the ping to the reception of its echo off of an object.
      pinMode(echoPin, INPUT);
      duration = pulseIn(echoPin, HIGH);
      // convert the time into a distance
      cm = (duration/2) / 29.1;
      inches = (duration/2) / 74;
      //Serial.print("in, ");
    Hopefully this sensor can be set up!!!

  • #2
    This might help you.
    Zwave = Z-Stick, 3xHSM100� 7xACT ZDM230, 1xEverspring SM103, 2xACT HomePro ZRP210.
    X10 = CM12U, 2xAM12, 1xAW10, 1 x TM13U, 1xMS13, 2xHR10, 2xSS13
    Other Hardware = ADI Ocelot + secu16, Global Cache GC100, RFXtrx433, 3 x Foscams.
    Plugings = RFXcom, ActiveBackup, Applied Digital Ocelot, BLDeviceMatrix, BLGarbage, BLLAN, Current Cost, Global Cache GC100,HSTouch Android, HSTouch Server, HSTouch Server Unlimited, NetCAM, PowerTrigger, SageWebcamXP, SqueezeBox, X10 CM11A/CM12U.
    Scripts =


    • #3
      THANK YOU!!!!!!