Stacja pogodowa NodeMCU i HD44780 i2c

05/10/202006/10/2020 Jarek Brak komentarzy

Chcesz znać aktualną pogodę? W tym artykule dowiesz się, jak zbudować prostą stację pogodową z płytą NODEmcu i wyświetlaczem HD44780 i2c. Płytka NodeMCU korzysta z układu ESP8266 w celu połączenia się z internetem i będziemy ją programować za pomocą Arduino IDE. Projekt pobiera dane pogodowe ze strony openweathermap.org i wyświetla je na wyświetlaczu. Wyświetlacz jest podłączony do Nodemcu poprzez moduł i2c, więc połączenie jest bardzo proste. Potrzebujemy tylko adresu modułu.

Podłączenie

NODEmcu -> Arduino:

D1 -> SCL
D2 -> SDA
Vin -> Vcc
GND -> GND

Pliki:

i2c_address_shearch.ino_Download

Weather_Station_i2c_NODEmcu.ino_Download

ArduinoJson-6.x Download

Instalacja płytki ESP8266 w Arduino IDE
Skopiuj link do dodatkowych adresów URL menedżera płytek (plik Arduino IDE -> Preferencje)

http://arduino.esp8266.com/stable/package_esp8266com_index.json

1	http://arduino.esp8266.com/stable/package_esp8266com_index.json

Teraz dodaj płytkę NODEmcu do Arduino IDE. Otwórz menadżer płytek (Arduino IDE -> Narzędzia -> Płytki: „……….” -> Menadżer płytek)

Biblioteka:

OK, Twoja płytka jest już dodana. Teraz musimy dodać biblioteki potrzebne w programie. Dodaj Liquid crystal_i2c, otwórz Narzędzia -> Biblioteki menedżera i wpisz LiquidCrystal_i2c w wyszukiwarkę i znajdź bibliotekę „LiquidCrystal_i2c autorstwa franka de Brabandera”.

Potrzebujesz jeszcze biblioteki JsonArduino, Otwórz Adruino IDE -> Szkic -> Dołącz bibliotekę -> Dodaj .ZIP Library …. I wybierz plik ArduinoJson-6.x.zip

Moduł adresowy i2c:

Jeśli nie znasz adresu swojego modułu, wgraj poniższy kod na płytkę i otwórz Serial Monitor tam pojawi się adres. Mój to 0x3F.

// ---------------------------------------------------------------- //
// Arduino I2C Scanner
// Re-writed by Arbi Abdul Jabbaar
// Using Arduino IDE 1.8.7
// Using GY-87 module for the target
// Tested on 10 September 2019
// This sketch tests the standard 7-bit addresses
// Devices with higher bit address might not be seen properly.
// ---------------------------------------------------------------- //

#include <Wire.h> //include Wire.h library

void setup()
{
  Wire.begin(); // Wire communication begin
  Serial.begin(9600); // The baudrate of Serial monitor is set in 9600
  while (!Serial); // Waiting for Serial Monitor
  Serial.println("\nI2C Scanner");
}

void loop()
{
  byte error, address; //variable for error and I2C address
  int nDevices;

  Serial.println("Scanning...");

  nDevices = 0;
  for (address = 1; address < 127; address++ )
  {
    // The i2c_scanner uses the return value of
    // the Write.endTransmisstion to see if
    // a device did acknowledge to the address.
    Wire.beginTransmission(address);
    error = Wire.endTransmission();

    if (error == 0)
    {
      Serial.print("I2C device found at address 0x");
      if (address < 16)
        Serial.print("0");
      Serial.print(address, HEX);
      Serial.println("  !");
      nDevices++;
    }
    else if (error == 4)
    {
      Serial.print("Unknown error at address 0x");
      if (address < 16)
        Serial.print("0");
      Serial.println(address, HEX);
    }
  }
  if (nDevices == 0)
    Serial.println("No I2C devices found\n");
  else
    Serial.println("done\n");

  delay(5000); // wait 5 seconds for the next I2C scan
}

// ---------------------------------------------------------------- //

// Arduino I2C Scanner

// Re-writed by Arbi Abdul Jabbaar

// Using Arduino IDE 1.8.7

// Using GY-87 module for the target

// Tested on 10 September 2019

// This sketch tests the standard 7-bit addresses

// Devices with higher bit address might not be seen properly.

// ---------------------------------------------------------------- //

#include <Wire.h> //include Wire.h library

void setup()

{

Wire.begin(); // Wire communication begin

Serial.begin(9600); // The baudrate of Serial monitor is set in 9600

while (!Serial); // Waiting for Serial Monitor

Serial.println("\nI2C Scanner");

}

void loop()

{

byte error, address; //variable for error and I2C address

int nDevices;

Serial.println("Scanning...");

nDevices = 0;

for (address = 1; address < 127; address++ )

{

// The i2c_scanner uses the return value of

// the Write.endTransmisstion to see if

// a device did acknowledge to the address.

Wire.beginTransmission(address);

error = Wire.endTransmission();

if (error == 0)

{

Serial.print("I2C device found at address 0x");

if (address < 16)

Serial.print("0");

Serial.print(address, HEX);

Serial.println(" !");

nDevices++;

}

else if (error == 4)

{

Serial.print("Unknown error at address 0x");

if (address < 16)

Serial.print("0");

Serial.println(address, HEX);

}

if (nDevices == 0)

Serial.println("No I2C devices found\n");

else

Serial.println("done\n");

delay(5000); // wait 5 seconds for the next I2C scan

}

Skonfiguruj stację pogodową:

Teraz otwórz szkic Weather_Station_i2c_NODEmcu.ino i przejdź do sekcji konfiguracji.

// ----------------  CONFIGURE  ------------------------------


// initialize the library
LiquidCrystal_I2C lcd(ADDRESS MODULE,2,16);


const char* ssid     = "NAME NETWORK";      // SSID of Wifi network
const char* password = "PASSWORD NETWORK";   // Password on network
String APIKEY = "APIKEY";                
String CityID = "NUMBER CITY"; // London, GB. 2643743


// ------------------  END -------------------------------------

// ---------------- CONFIGURE ------------------------------

// initialize the library

LiquidCrystal_I2C lcd(ADDRESS MODULE,2,16);

const char* ssid = "NAME NETWORK"; // SSID of Wifi network

const char* password = "PASSWORD NETWORK"; // Password on network

String APIKEY = "APIKEY";

String CityID = "NUMBER CITY"; // London, GB. 2643743

// ------------------ END -------------------------------------

Wpisz swój moduł adresowy i2c:

// zainicjuj bibliotekę

LiquidCrystal_I2C lcd( address module i2c ,2,16);

Wpisz nazwę swojej sieci:

const char* ssid = „NAME NETWORK”;

Wprowadź hasło sieciowe:

const char* password = „PASSWORD NETWORK”;

Teraz wejdź na www.openweathermap.org i zarejestruj się na stronie, przejdź do zakładki cen i kliknij BEZPŁATNIE BEZPŁATNIE „pobierz KLUCZ API i zacznij”. Wejdź na home.openweathermap.org i otwórz APIKEY i skopiuj go.

Następnie wyszukaj swoje miasto i z linku skopiuj numer miasta do skech https://openweathermap.org/city/2643743 numer miasta 2643743.

/*
 *     ForbiddenBit.com
 *     
 *     http://arduino.esp8266.com/stable/package_esp8266com_index.json
 */

#include <ESP8266WiFi.h>
#include <LiquidCrystal_I2C.h>
#include <ArduinoJson.h>

// ----------------  CONFIGURE  ------------------------------


// initialize the library
LiquidCrystal_I2C lcd(ADDRESS MODULE,2,16);


const char* ssid     = "NAME NETWORK";      // SSID of Wifi network
const char* password = "PASSWORD NETWORK";   // Password on network
String APIKEY = "APIKEY";                
String CityID = "NUMBER CITY"; // London, GB. 2643743


// ------------------  END -------------------------------------


WiFiClient client;

char servername[]="api.openweathermap.org";  // remote server we will connect to
String result;

int  counter = 60;

String weatherDescription ="";
String weatherLocation = "";
String Country;
float Temperature;
float Humidity;
float Pressure;



void setup() {
  Serial.begin(115200);
  int cursorPosition=0;
  
  //display initialization
   lcd.init();

   //turn on the backlight
   lcd.backlight();
   
  lcd.print("   Connecting");  
  Serial.println("Connecting");
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    lcd.setCursor(cursorPosition,2); 
    lcd.print(".");
    cursorPosition++;
  }
  lcd.clear();
  lcd.print("   Connected!");
  Serial.println("Connected");
  delay(1000);

}

void loop() {
    if(counter == 60) //Get new data every 10 minutes
    {
      counter = 0;
      displayGettingData();
      delay(1000);
      getWeatherData();
    }else
    {
      counter++;
      displayWeather(weatherLocation,weatherDescription);
      delay(5000);
      displayConditions(Temperature,Humidity,Pressure);
      delay(5000);
    }
}

void getWeatherData() //client function to send/receive GET request data.
{
  if (client.connect(servername, 80)) {  //starts client connection, checks for connection
    client.println("GET /data/2.5/weather?id="+CityID+"&units=metric&APPID="+APIKEY);
    client.println("Host: api.openweathermap.org");
    client.println("User-Agent: ArduinoWiFi/1.1");
    client.println("Connection: close");
    client.println();
  } 
  else {
    Serial.println("connection failed"); //error message if no client connect
    Serial.println();
  }

  while(client.connected() && !client.available()) delay(1); //waits for data
  while (client.connected() || client.available()) { //connected or data available
    char c = client.read(); //gets byte from ethernet buffer
      result = result+c;
    }

  client.stop(); //stop client
  result.replace('[', ' ');
  result.replace(']', ' ');
  Serial.println(result);

char jsonArray [result.length()+1];
result.toCharArray(jsonArray,sizeof(jsonArray));
jsonArray[result.length() + 1] = '\0';

StaticJsonDocument<1024> doc;

/*
DeserializationError error = deserializeJson(doc, json);
if (error)
{
  Serial.print("deserializeJson() failed");
  Serial.println(error.c_str());
  return;
}
*/

String location = doc["name"];
String country = doc["sys"]["country"];
float temperature = doc["main"]["temp"];
float humidity = doc["main"]["humidity"];
String weather = doc["weather"]["main"];
String description = doc["weather"]["description"];
float pressure = doc["main"]["pressure"];


weatherDescription = description;
weatherLocation = location;
Country = country;
Temperature = temperature;
Humidity = humidity;
Pressure = pressure;

}

void displayWeather(String location,String description)
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print(location);
  lcd.print(", ");
  lcd.print(Country);
  lcd.setCursor(0,1);
  lcd.print(description);
}

void displayConditions(float Temperature,float Humidity, float Pressure)
{
  lcd.clear();
  lcd.print("T:"); 
 lcd.print(Temperature,1);
 lcd.print((char)223);
 lcd.print("C ");
 
 //Printing Humidity
 lcd.print(" H:");
 lcd.print(Humidity,0);
 lcd.print(" %");
 
 //Printing Pressure
 lcd.setCursor(0,1);
 lcd.print("P: ");
 lcd.print(Pressure,1);
 lcd.print(" hPa");

}

void displayGettingData()
{
  lcd.clear();
  lcd.print("Getting data");
}

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* ForbiddenBit.com

* http://arduino.esp8266.com/stable/package_esp8266com_index.json

#include <ESP8266WiFi.h>

#include <LiquidCrystal_I2C.h>

#include <ArduinoJson.h>

// ---------------- CONFIGURE ------------------------------

// initialize the library

LiquidCrystal_I2C lcd(ADDRESS MODULE,2,16);

const char* ssid = "NAME NETWORK"; // SSID of Wifi network

const char* password = "PASSWORD NETWORK"; // Password on network

String APIKEY = "APIKEY";

String CityID = "NUMBER CITY"; // London, GB. 2643743

// ------------------ END -------------------------------------

WiFiClient client;

char servername[]="api.openweathermap.org"; // remote server we will connect to

String result;

int counter = 60;

String weatherDescription ="";

String weatherLocation = "";

String Country;

float Temperature;

float Humidity;

float Pressure;

void setup() {

Serial.begin(115200);

int cursorPosition=0;

//display initialization

lcd.init();

//turn on the backlight

lcd.backlight();

lcd.print(" Connecting");

Serial.println("Connecting");

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

lcd.setCursor(cursorPosition,2);

lcd.print(".");

cursorPosition++;

}

lcd.clear();

lcd.print(" Connected!");

Serial.println("Connected");

delay(1000);

}

void loop() {

if(counter == 60) //Get new data every 10 minutes

{

counter = 0;

displayGettingData();

delay(1000);

getWeatherData();

}else

{

counter++;

displayWeather(weatherLocation,weatherDescription);

delay(5000);

displayConditions(Temperature,Humidity,Pressure);

delay(5000);

}

void getWeatherData() //client function to send/receive GET request data.

{

if (client.connect(servername, 80)) { //starts client connection, checks for connection

client.println("GET /data/2.5/weather?id="+CityID+"&units=metric&APPID="+APIKEY);

client.println("Host: api.openweathermap.org");

client.println("User-Agent: ArduinoWiFi/1.1");

client.println("Connection: close");

client.println();

}

else {

Serial.println("connection failed"); //error message if no client connect

Serial.println();

}

while(client.connected() && !client.available()) delay(1); //waits for data

while (client.connected() || client.available()) { //connected or data available

char c = client.read(); //gets byte from ethernet buffer

result = result+c;

}

client.stop(); //stop client

result.replace('[', ' ');

result.replace(']', ' ');

Serial.println(result);

char jsonArray [result.length()+1];

result.toCharArray(jsonArray,sizeof(jsonArray));

jsonArray[result.length() + 1] = '\0';

StaticJsonDocument<1024> doc;

DeserializationError error = deserializeJson(doc, json);

if (error)

{

Serial.print("deserializeJson() failed");

Serial.println(error.c_str());

return;

}

String location = doc["name"];

String country = doc["sys"]["country"];

float temperature = doc["main"]["temp"];

float humidity = doc["main"]["humidity"];

String weather = doc["weather"]["main"];

String description = doc["weather"]["description"];

float pressure = doc["main"]["pressure"];

weatherDescription = description;

weatherLocation = location;

Country = country;

Temperature = temperature;

Humidity = humidity;

Pressure = pressure;

}

void displayWeather(String location,String description)

{

lcd.clear();

lcd.setCursor(0,0);

lcd.print(location);

lcd.print(", ");

lcd.print(Country);

lcd.setCursor(0,1);

lcd.print(description);

}

void displayConditions(float Temperature,float Humidity, float Pressure)

{

lcd.clear();

lcd.print("T:");

lcd.print(Temperature,1);

lcd.print((char)223);

lcd.print("C ");

//Printing Humidity

lcd.print(" H:");

lcd.print(Humidity,0);

lcd.print(" %");

//Printing Pressure

lcd.setCursor(0,1);

lcd.print("P: ");

lcd.print(Pressure,1);

lcd.print(" hPa");

}

void displayGettingData()

{

lcd.clear();

lcd.print("Getting data");

}

Podłączenie

Biblioteka:

Moduł adresowy i2c:

Skonfiguruj stację pogodową:

Teraz otwórz szkic Weather_Station_i2c_NODEmcu.ino i przejdź do sekcji konfiguracji.

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