Ground Water level Monitored with WeMos D1 R2 and HR-SC04

/* 
 *  ********************************************
 *  WARNING DISCONNECT SENSORS USING WEMOS D1 * 
 *  *******************************************
   
   https://www.dealextreme.com/p/hc-sr04-ultrasonic-sensor-distance-measuring-module-133696
   http://www.tautvidas.com/blog/2012/08/distance-sensing-with-ultrasonic-sensor-and-arduino/
   moreinfo: http://m5.img.dxcdn.com/CDDriver/CD/sku.133696.pdf
   Output distance http://keyes-arduino.taobao.com
   This sketch reads a HC-SR04 ultrasonic rangefinder and returns the
   distance to the closest object in range. To do this, it sends a pulse
   to the sensor to initiate a reading, then listens for a pulse 
   to return.  The length of the returning pulse is proportional to 
   the distance of the object from the sensor.
     
   The circuit:
  * VCC connection of the sensor attached to +5V
  * GND connection of the sensor attached to ground
  * TRIG connection of the sensor attached to digital pin 5 (subject to change)
  * ECHO connection of the sensor attached to digital pin 4
   Original code for Ping))) example was created by David A. Mellis
   Adapted for HC-SR04 by Tautvidas Sipavicius
   
   The speed of sound is 340 m/s or 29 microseconds per centimeter.
   The ping travels out and back, so to find the distance of the
   object we take half of the distance travelled.
   
   This example code is in the public domain.
 */

//#define CAYENNE_PRINT Serial   // Comment this out to disable prints and save space
#include <SPI.h>
#include <SimpleTimer.h>
//#include <CayenneEthernet.h> //when using W5100
///*
// with the ESP8266 module
#include "CayenneDefines.h"
#include "BlynkSimpleEsp8266.h"
#include "CayenneWiFiClient.h"
// Your network name and password.
char ssid[] = "xxxx";
char password[] = "xxxx";
//*/

// Cayenne authentication token. This should be obtained from the Cayenne Dashboard.
char token[] = "xxxx";

SimpleTimer timer;

// for DHT22
#include <DHT.h>
// DHT22 temp & vochtmeter
#define DHTPIN D6        // what digital pin we're connected to
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
DHT dht(DHTPIN, DHTTYPE);

// for HC-SR04
#define echoPin D4 // Echo Pin
#define trigPin D5 // Trigger Pin
float h, t, f; //declare variable used in HC-SR04

// establish variables for duration of the ping, 
// and the distance result in inches and centimeters:
long duration, distance, distance_new, logecho; // Duration used to calculate distance

void setup() {
  //Cayenne.begin(token); //with W5100
  Cayenne.begin(token, ssid, password); //with ESP8266
  Serial.begin(115200);
  Serial.println("info: sketch_Distance_Cayenne");
  Serial.print("compiled: ");
  Serial.print(__DATE__);
  Serial.print(" ");
  Serial.println(__TIME__);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  timer.setInterval(60000, RepeatTask);
  timer.setInterval(6000, RepeatEcho);

  // initialise DHT
  Serial.println("DHTxx begin!\n");
  dht.begin();
}


CAYENNE_OUT(V3) {
  Cayenne.virtualWrite(V3,logecho); // virtualpin 3 plus distance
}

CAYENNE_OUT(V4) {
  Cayenne.virtualWrite(V4,distance); // virtualpin 4 plus distance
}

CAYENNE_OUT(V5) {
  Cayenne.virtualWrite(V5,t); // virtualpin 5 (temperature)
}

CAYENNE_OUT(V6) {
  Cayenne.virtualWrite(V6,h); // virtualpin 6 (huminity)
}

void loop() {
  Cayenne.run(); // Initiates Blynk
  timer.run();   // Initiates SimpleTimer
}