Simple Ultrasonic and Water Level Sensor With LoRa RFM95

#include <SPI.h>
#include <LoRa.h>
#include <NewPing.h>

//Ultrasonic sensor
#define TRIGGER_PIN  3  
#define ECHO_PIN     4 
#define MAX_DISTANCE 200

//Water level sensor
#define sensor A0

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE);

int distance;

int dummyValue;
long randNumber; //Create Random Number To Avoid Transmission Loss For First Digit

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  while(!Serial);

  if (!LoRa.begin(915E6)){
    Serial.println("Starting LoRa Failed!");
    while(1);
    }else{
      Serial.println("LoRa Sender!");
      }
}

void loop() {
  // put your main code here, to run repeatedly:
  randNumber = random(1000);

  int randNumber = random(100); dummyValue = randNumber;
  int wlvl = analogRead(sensor);
  int distance = sonar.ping_cm();

  Serial.println(wlvl);
  Serial.println(distance);

  if (isnan(wlvl)){
    Serial.println(F("Failed to read from Water Level sensor!"));
    return;
    }
  if (isnan(distance)){
    Serial.println(F("Failed to read from Ultrasonic sensor!"));
    }

  String dataString = String(dummyValue) + (";") + String(wlvl) + (";") + String(distance);

  Serial.println(dataString);
  LoRa.beginPacket();
  LoRa.print(dataString);
  LoRa.endPacket();

  delay(100);
}