How to Make Simple Weather Station
Supplies
Step 1: About DHT11 Sensor
Step 2: Connecting DHT11 With Arduino
Step 3: I2C LCD Display
Step 4: Connecting I2C LCD Display to Arduino
Step 5: Code
Step 6: Complete Construction and Working
Step 7: Sponsor by NEXTPCB
Step 8: NextPCB Offers

Published July 12, 2020 © Apache-2.0

How to Make Simple Weather Station

Hello Guys, In this Video I will Show You how to make simple weather station to sense temperature and humidity using DHT11 sensor

BeginnerShowcase (no instructions)1 hour11,339

Things used in this project

Hardware components

Arduino UNO

DHT11 Temperature & Humidity Sensor (3 pins)

Jumper wires (generic)

Adafruit RGB Backlight LCD - 16x2

Software apps and online services

Arduino IDE

Story

Video

How to Make Simple Weather Station

Hello Guys, In this Video I will Show You how to make simple weather station to sense temperature and humidity using DHT11 sensor

Supplies:

Parts list : -Arduino UNO -16×2 LCD MODULE-Jumper Cable -DHT 11 -

Step 1: About DHT11 Sensor

DHT11 is a humidity and temperature sensor. It can be used as humidity sensor as well as the temperature sensor. You can find the dht11 sensor of 2 types in the market. One is with 4 pins and another is with 3 pins. In 3 pin dht11 sensor already 10k Ohm resistor is added inside the module. The operating voltage of this module is 3.3 V. The output of this sensor is digital.

Step 1: About DHT11 SensorDHT11 is a humidity and temperature sensor. It can be used as humidity sensor as well as the temperature sensor. You can find the dht11 sensor of 2 types in the market. One is with 4 pins and another is with 3 pins. In 3 pin dht11 sensor already 10k Ohm resistor is added inside the module. The operating voltage of this module is 3.3 V. The output of this sensor is digital.

Step 2: Connecting DHT11 With Arduino

Connect DHT 11 With Arduino UNO

DHT11 ARDUINO UNO

GND TO GND

VCC TO 3.3V

OUTPIN TO D11

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Step 2: Connecting DHT11 With ArduinoConnect DHT 11 With Arduino UNODHT11 ARDUINO UNOGND TO GNDVCC TO 3.3VOUTPIN TO D11Add TipAsk QuestionCommentDownload

Step 3: I2C LCD Display

This is an 16x2 LCD display screen with I2C interface. It is able to display 16x2 characters on 2 lines, white characters on blue background.

Usually, Arduino LCD display projects will run out of pin resources easily, especially with Arduino Uno. And it is also very complicated with the wire soldering and connection. This I2C 16x2 Arduino LCD Screen is using an I2C communication interface. It means it only needs 4 pins for the LCD display: VCC, GND, SDA, SCL. It will saves at least 4 digital / analog pins on Arduino. All connector are standard XH2.54 (Breadboard type). You can connect with jumper wire directly.

Step 3: I2C LCD DisplayThis is an 16x2 LCD display screen with I2C interface. It is able to display 16x2 characters on 2 lines, white characters on blue background.Usually, Arduino LCD display projects will run out of pin resources easily, especially with Arduino Uno. And it is also very complicated with the wire soldering and connection. This I2C 16x2 Arduino LCD Screen is using an I2C communication interface. It means it only needs 4 pins for the LCD display: VCC, GND, SDA, SCL. It will saves at least 4 digital / analog pins on Arduino. All connector are standard XH2.54 (Breadboard type). You can connect with jumper wire directly.

Step 4: Connecting I2C LCD Display to Arduino

I2C LCD Arduino

GND <---> GND

VCC <---> 5V

SDA <---> A4

SCL <---> A5

Step 4: Connecting I2C LCD Display to ArduinoI2C LCD ArduinoGND <---> GNDVCC <---> 5VSDA <---> A4SCL <---> A5

Step 5: Code

Code

Step 6: Complete Construction and Working

Video

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Step 6: Complete Construction and WorkingVideoLike, Share, And Subscribe My Channel

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e do you make them?Personally, I do not have the space and the courage (nor the skill) to do them myself.For SF, I turn to Util-Pocket, because I find that the quality is excellent for the price.For the DF (with metallic holes), I tried several companies, all of which do a good job, but it costs a lot.This time I addressed myself here. I had 3 circuits to do, totaling an average surface of 49 cm2.When I saw that the minimum quantity to order was 5 PCBs, I continued my order out of curiosity, just to see the quote.And when I saw the asking price, I placed the order.NEXTPCBAdd TipAsk QuestionCommentDownload

Step 8: NextPCB Offers

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Code

Code

//Smarttronics


#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display 
byte degree_symbol[8] = 
              {
                0b00111,
                0b00101,
                0b00111,
                0b00000,
                0b00000,
                0b00000,
                0b00000,
                0b00000
              };
int gate=11; 
volatile unsigned long duration=0;
unsigned char i[5];
unsigned int j[40];
unsigned char value=0;
unsigned answer=0;
int z=0;
int b=1;
void setup() 
{
 lcd.init();                       // initialize the lcd
 lcd.init();
 lcd.backlight(); 
 lcd.print("Temp = ");
 lcd.setCursor(0,1);
 lcd.print("Humidity = ");
 lcd.createChar(1, degree_symbol);
 lcd.setCursor(9,0);
 lcd.write(1);
 lcd.print("C");
 lcd.setCursor(13,1);
 lcd.print("%");
}

void loop() 
{

 delay(1000);
 while(1)
 {
  delay(1000);
  pinMode(gate,OUTPUT);
  digitalWrite(gate,LOW);
  delay(20);
  digitalWrite(gate,HIGH);
  pinMode(gate,INPUT_PULLUP);//by default it will become high due to internal pull up
 // delayMicroseconds(40);

  
  duration=pulseIn(gate, LOW);
  if(duration <= 84 && duration >= 72)
  {
      while(1)
      {
        duration=pulseIn(gate, HIGH);
        
        if(duration <= 26 && duration >= 20){
        value=0;}
        
        else if(duration <= 74 && duration >= 65){
        value=1;}
        
        else if(z==40){
        break;}
        
        i[z/8]|=value<<(7- (z%8));
        j[z]=value;
        z++;
      }
    }
answer=i[0]+i[1]+i[2]+i[3];

if(answer==i[4] && answer!=0)
{
lcd.setCursor(7,0);
lcd.print(i[2]);
lcd.setCursor(11,1);
lcd.print(i[0]);
}

z=0;
i[0]=i[1]=i[2]=i[3]=i[4]=0;
 }
}

Credits

Raushan kr.

38 projects • 160 followers

Maker | Developer | Content Creator

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How to Make Simple Weather Station