Published June 20, 2021 © LGPL

Lora Weather Station With Arduino

Simple Weather Station With Lora, Arduino & Sensors

IntermediateFull instructions provided4,083

Things used in this project

Hardware components

Arduino Nano R3

Bolt IoT LORA RFM95

DFRobot I2C 16x2 Arduino LCD Display Module

DHT11 Temperature & Humidity Sensor (4 pins)

Ldr Sensor

MyOctopus i2c Barometric Air Pressure Sensor BMP280

5 mm LED: Red

Breadboard (generic)

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)

Solder Wire, Lead Free

Solder Flux, Soldering

PCB Holder, Soldering Iron

Story

Today iam going to show you how to make LoRa (rfm95) Weather Station With Arduino & Sensors this is a simple project does not require high knowledge about arduino and electronics this is an intermediate level project, so its kind of okay to you. I tried my best to document this project to you, to look simple. so you can also make this project as I do, if you appreciate my work, a sub to my youtube channelwill make me happy and keeps me motivated so I can make new projects for you in the near future, so with out further ado lets get started........

Code

/*feel free to contact
 * sreeramaj53@gmail.com
 * www.youtube.com/ZenoModiff
 * last updated - time 11:26am - date 12 may 2021
 */

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

#include "DHT.h"
#include <Adafruit_BMP280.h>

#define DHTPIN 7
#define DHTTYPE DHT11
Adafruit_BMP280 bmp; 

float Pressure;
float Altitude;
int ldr = 4;
int counter = 0;
int Dummyvalue;

DHT dht(DHTPIN, DHTTYPE);
long randNumber; //Create Random Number To Avoid Transmission Loss For First Digit

void setup() 
{
  Serial.begin(115200);
  
 randomSeed(analogRead(0));
 dht.begin();
 
if (!bmp.begin()) {
    Serial.println(F("Could not find a valid BMP280 sensor, check wiring!"));
    while (1);
  }

   pinMode(ldr, OUTPUT);
  while (!Serial);
  
  Serial.println(" Lora Weather Station By ZenoModiff ");

  if (!LoRa.begin(915E6)) {
    Serial.println("Starting LoRa failed!");
  }
  else
  {
   Serial.println("Starting LoRa Sucesses!");
  }
}
void loop()
{
 Serial.println();
 Serial.print("Sending packet: ");
 Serial.println(counter);
 randNumber = random(1000);

 
 int randNumber = random(100); Dummyvalue = randNumber;
 double ldrvalue = analogRead(ldr);
 float h = dht.readHumidity();
 float t = dht.readTemperature();
 float f = dht.readTemperature(true);
 float pressure = (bmp.readPressure()/100); Pressure = pressure;
 int altitude =  (bmp.readAltitude(1019.66)); Altitude = altitude; 
  

  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  String Datastring = String(Dummyvalue) + (";") + String(t) + (";") + String(h) + (";") + String(ldrvalue) + (";") + String (Pressure) + (";") + String (Altitude);
 
  Serial.println(Datastring);
  LoRa.beginPacket();      
  LoRa.print(Datastring);
  LoRa.print(counter);
  LoRa.endPacket();
  counter++;
  
  delay(3000);
  
}

/*feel free to contact
 * sreeramaj53@gmail.com
 * www.youtube.com/ZenoModiff
 * last updated - time 11:28am - date 12 may 2021
 */

#include <Wire.h> 
#include <SPI.h>
#include <LoRa.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() 
{  
  
  Serial.begin(115200);

  lcd.begin();
  lcd.setCursor(0,0);
  lcd.print("LoRa Weather");
  lcd.setCursor(0,3);
  lcd.print("Station");
  delay(2000);
  lcd.clear();
  lcd.print("By");
  lcd.setCursor(0,3);
  lcd.print("Zeno Modiff");
  delay (2000);
  while (!Serial);

  Serial.println("LoRa Receiver By Zeno Modiff");

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

void loop() {
  
  String packet = "";
  
  int packetSize = LoRa.parsePacket();
  if (packetSize) {

    Serial.print("Received packet :-- ");

    while (LoRa.available()) {
    
    packet = LoRa.readString();
    }
    
    Serial.println(packet);
    Serial.println();

int firstcommaIndex   = packet.indexOf(';');
int secondCommaIndex  = packet.indexOf(';', firstcommaIndex+1);
int thirdCommaIndex   = packet.indexOf(';', secondCommaIndex+1);
int fourthCommaIndex  = packet.indexOf(';', thirdCommaIndex+1);   
int fifthCommaIndex   = packet.indexOf(';', fourthCommaIndex+1);
int sixthCommaIndex   = packet.indexOf(';', fifthCommaIndex+1);

String firstValue  =  packet.substring( 0, firstcommaIndex);
String secondValue =  packet.substring(firstcommaIndex+1, secondCommaIndex);
String thirdValue  =  packet.substring(secondCommaIndex+1, thirdCommaIndex);
String fourthValue =  packet.substring(thirdCommaIndex +1, fourthCommaIndex);
String fifthValue  =  packet.substring(fourthCommaIndex+1, fifthCommaIndex);
String sixthValue  =  packet.substring(fifthCommaIndex+1,  sixthCommaIndex);

Serial.print("Temp:-"); Serial.println(secondValue);
Serial.print("Humi:-"); Serial.println(thirdValue);
Serial.print("Ldr:-"); Serial.println(fourthValue); 
Serial.print("Pressure:-"); Serial.println(fifthValue);  
Serial.print("Altitude:-"); Serial.println(sixthValue); 
Serial.println();

/*since we can't print the first digit 
it is a dummy value sent by the LoRa String 
in case of transmission Loss*/

lcd.clear(); lcd.setCursor(0,0);
lcd.print("Temp:-"); lcd.println(secondValue);
delay(2000);

lcd.clear(); lcd.setCursor(0,0);
lcd.print("Humi:-"); lcd.println(thirdValue);
delay(2000);

lcd.clear(); lcd.setCursor(0,0);
lcd.print("Ldr:-"); lcd.println(fourthValue);
delay(2000);

lcd.clear(); lcd.setCursor(0,0);
lcd.print("Pres:-"); lcd.println(fifthValue);
delay(2000);

lcd.clear(); lcd.setCursor(0,0);
lcd.print("Alti:-"); lcd.println(sixthValue);
delay(2000);

}
}