Published June 8, 2017

Wireless Weather Station

How I made a weather station.

BeginnerShowcase (no instructions)2,653

Things used in this project

Hardware components

DHT11 Temperature & Humidity Sensor (4 pins)

MyOctopus i2c Barometric Air Pressure Sensor BMP280

UVM30A UV sensor

Arduino UNO

Arduino Nano R3

Jumper wires (generic)

Adafruit RGB Backlight LCD - 16x2

RF433 Transmitter and Receiver

Story

STEP 1

First we need to make the transmitter. The transmitter should collect information from sensors and then send that information to the receiver by the RF433 transmitter part. It needs to look like this.

In the pictures, we can see that the sensors and transmitters are connected on Arduino Nano. At the end of this project I will give you a code for the transmitter and receiver.

STEP 2

Second, we need to build a receiver which will take information from the transmitter and print it on the LCD display.

This is how the project looked in the end.

For more visit https://www.youtube.com/watch?v=x_3yc_zOUyI&t=87s

 #include<dht.h> 
#include <Wire.h> 
#include <VirtualWire.h>  
#include <Adafruit_Sensor.h> 
#include <Adafruit_BMP280.h> 
#define dht_apin A0 
dht DHT; 
char msg[8]; 
float pritisak; 
#define BMP_SCK 12 
#define BMP_MISO 11 
#define BMP_MOSI 10  
#define BMP_CS 9 
Adafruit_BMP280 bme(BMP_CS, BMP_MOSI, BMP_MISO,  BMP_SCK); 
void setup(){ 
 vw_set_ptt_inverted(true); 
 Serial.begin(9600); 
 vw_set_tx_pin(4);  // Sets pin D12 as the TX pin 
 vw_setup(2000);  
 if (!bme.begin()) {   
   Serial.println("Could not find a valid BMP280 sensor, check wiring!"); 
 while (1);} 
 delay(1000);//Wait before accessing Sensor      
} 
void loop(){ 
 DHT.read11(dht_apin); 
 dtostrf(DHT.humidity, 8,1,msg); 
 msg[0]='H'; 
 vw_send((uint8_t *)msg, strlen(msg)); //transmits the data 
 vw_wait_tx(); 
 dtostrf(DHT.temperature,8,1,msg); 
 msg[0]='T'; 
 vw_send((uint8_t *)msg, strlen(msg)); //transmits the data 
 vw_wait_tx(); 
 dtostrf(analogRead(3), 8,1,msg); 
 msg[0]='U'; 
 vw_send((uint8_t *)msg, strlen(msg)); //transmits the data 
 vw_wait_tx(); 
 pritisak = bme.readPressure()/100; 
 dtostrf(pritisak,8,1,msg); 
 msg[0]='P'; 
 vw_send((uint8_t *)msg, strlen(msg)); //transmits the data 
 vw_wait_tx(); 
 delay(3000); }

 #include <VirtualWire.h> 
#include <LiquidCrystal.h> 
String poruka; 
LiquidCrystal lcd(8,9,4,5,6,7); 
unsigned char ledPin=1; 
unsigned char ledPin2=2; 
int flag = 0; 
void setup(){ 
 vw_set_ptt_inverted(true); 
 Serial.begin(9600); 
 delay(500); 
 vw_set_rx_pin(12);       //Sets pin D12 as the RX Pin 
 vw_setup(2000);       
 vw_rx_start();            
 pinMode(ledPin, OUTPUT); 
 pinMode(ledPin2, OUTPUT); 
 digitalWrite(ledPin, LOW); 
 digitalWrite(ledPin2, LOW); 
 digitalWrite(ledPin, HIGH); 
 lcd.begin(16,2); 
 lcd.setCursor(0,0); 
 lcd.print("  Wheater"); 
 lcd.setCursor(0,1); 
 lcd.print("    station"); 
 delay(2000); 
 lcd.clear(); 
} 
void loop(){ 
 uint8_t buf[VW_MAX_MESSAGE_LEN]; 
 uint8_t buflen = VW_MAX_MESSAGE_LEN; 
 if( vw_get_message(buf, &buflen) ) 
 { 
   if(flag<2){ 
     lcd.setCursor(15,1); 
     lcd.print("*"); 
     flag++; 
   } 
   else if(flag<4){ 
     lcd.setCursor(15,1); 
     lcd.print(" "); 
     flag++; 
   } 
   else 
     flag=0; 
   if(buf[0]=='H'){ 
     buf[0]=' '; 
     poruka=String((char *)buf); 
     poruka.trim(); 
     lcd.setCursor(0,1); 
     lcd.print("V="); 
     lcd.print(poruka); 
     lcd.print("%"); 
   } 
   else if(buf[0]=='T'){ 
     buf[0]=' '; 
     poruka=String((char *)buf); 
     poruka.trim(); 
     lcd.setCursor(0,0); 
     lcd.print("T="); 
     lcd.print(poruka); 
     lcd.print("C"); 
   } 
   else if(buf[0]=='U'){ 
     buf[0]=' '; 
     poruka=String((char *)buf); 
     poruka.trim(); 
     lcd.setCursor(8,1); 
     lcd.print("U="); 
     lcd.print(poruka); 
   } 
   else if(buf[0]=='P'){ 
     buf[0]=' '; 
     poruka=String((char *)buf); 
     poruka.trim(); 
     lcd.setCursor(8,0); 
     lcd.print("P="); 
     lcd.print(poruka); 
   } 
 } }

Credits

Aldin

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Wireless Weather Station

Things used in this project

Hardware components

Story

STEP 1

STEP 2

Code

Transmitter code

Receiver code

Credits

Aldin

Comments

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Wireless Weather Station

Wireless Weather Station

Things used in this project

Hardware components

Story

STEP 1

STEP 2

Code

Transmitter code

Receiver code

Credits

Aldin

Comments

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