Arduino Based Smart Weather Station
COMPONENT'S FOR THIS PROJECT'S
· NODE-MCU (ESP-8266)
· SERIAL USB CABEL
· TEMPERATURE SENSOR (DHT-11)
· OLED DISPLAY
· BREAD-BOARD
· JUMPER WIRES
· BATTERY (optional) you can also use by usb cabel power supply
SOFTWARE & APPLICATION
· ARDUINO IDE
https://www.arduino.cc/en/software
CIRCUIT DIAGRAM
ARDUINO CODE'S
#include <Arduino.h>
#include <ESPWiFi.h>
#include <ESPHTTPClient.h>
#include <JsonListener.h>
#include <time.h> // time() ctime()
#include <sys/time.h> // struct timeval
#include <coredecls.h> // settimeofday_cb()
#include "SSD1306Wire.h"
#include "OLEDDisplayUi.h"
#include "Wire.h"
#include "OpenWeatherMapCurrent.h"
#include "OpenWeatherMapForecast.h"
#include "WeatherStationFonts.h"
#include "WeatherStationImages.h"
#include "DHT.h"
const char* WIFI_SSID = "Gaurav Sharma";
const char* WIFI_PWD = "access@denied";
#define TZ 5 // (utc+) TZ in hours
#define DST_MN 30 // use 60mn for summer time in some countries
// Setup
const int UPDATE_INTERVAL_SECS = 10 * 60; // Update every 30 minutes
// Display Settings
const int I2C_DISPLAY_ADDRESS = 0x3C;
#if defined(ESP8266)
const int SDA_PIN = D2;
const int SDC_PIN = D1;
#else
const int SDA_PIN = 19; //D3;
const int SDC_PIN = 20; //D4;
#endif
String OPEN_WEATHER_MAP_APP_ID = "471a17ddf68029674538e9e1663f7262";
String OPEN_WEATHER_MAP_LOCATION_ID = "1271942";
String OPEN_WEATHER_MAP_LANGUAGE = "en";
const uint8_t MAX_FORECASTS = 4;
const boolean IS_METRIC = true;
// Adjust according to your language
const String WDAY_NAMES[] = {"SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"};
const String MONTH_NAMES[] = {"JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SEP", "OCT", "NOV", "DEC"};
/***************************
* End Settings
**************************/
SSD1306Wire display(I2C_DISPLAY_ADDRESS, SDA_PIN, SDC_PIN);
OLEDDisplayUi ui( &display );
OpenWeatherMapCurrentData currentWeather;
OpenWeatherMapCurrent currentWeatherClient;
OpenWeatherMapForecastData forecasts[MAX_FORECASTS];
OpenWeatherMapForecast forecastClient;
#define TZ_MN ((TZ)*60)
#define TZ_SEC ((TZ)*3600)
#define DST_SEC ((DST_MN)*60)
time_t now;
// flag changed in the ticker function every 10 minutes
bool readyForWeatherUpdate = false;
String lastUpdate = "--";
long timeSinceLastWUpdate = 0;
//declaring prototypes
void drawProgress(OLEDDisplay *display, int percentage, String label);
void updateData(OLEDDisplay *display);
void drawDateTime(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y);
void drawTemp(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y);
void drawHum(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y);
void drawCurrentWeather(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y);
void drawForecast(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y);
void drawForecastDetails(OLEDDisplay *display, int x, int y, int dayIndex);
void drawHeaderOverlay(OLEDDisplay *display, OLEDDisplayUiState* state);
void setReadyForWeatherUpdate();
FrameCallback frames[] = { drawDateTime, drawCurrentWeather, drawForecast, drawTemp, drawHum };
int numberOfFrames = 5;
OverlayCallback overlays[] = { drawHeaderOverlay };
int numberOfOverlays = 1;
DHT dht = DHT(D3, DHT11, 6);
void setup() {
Serial.begin(115200);
Serial.println();
Serial.println();
// initialize dispaly
display.init();
display.clear();
display.display();
display.setFont(ArialMT_Plain_10);
display.setTextAlignment(TEXT_ALIGN_CENTER);
display.setContrast(255);
dht.begin();
WiFi.begin(WIFI_SSID, WIFI_PWD);
int counter = 0;
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
display.clear();
display.drawString(64, 10, "Connecting to WiFi");
display.drawXbm(46, 30, 8, 8, counter % 3 == 0 ? activeSymbole : inactiveSymbole);
display.drawXbm(60, 30, 8, 8, counter % 3 == 1 ? activeSymbole : inactiveSymbole);
display.drawXbm(74, 30, 8, 8, counter % 3 == 2 ? activeSymbole : inactiveSymbole);
display.display();
counter++;
}
// Get time from network time service
configTime(TZ_SEC, DST_SEC, "pool.ntp.org");
ui.setTargetFPS(30);
ui.setActiveSymbol(activeSymbole);
ui.setInactiveSymbol(inactiveSymbole);
// You can change this to
// TOP, LEFT, BOTTOM, RIGHT
ui.setIndicatorPosition(BOTTOM);
// Defines where the first frame is located in the bar.
ui.setIndicatorDirection(LEFT_RIGHT);
// You can change the transition that is used
// SLIDE_LEFT, SLIDE_RIGHT, SLIDE_TOP, SLIDE_DOWN
ui.setFrameAnimation(SLIDE_LEFT);
ui.setFrames(frames, numberOfFrames);
ui.setOverlays(overlays, numberOfOverlays);
// Inital UI takes care of initalising the display too.
ui.init();
Serial.println("");
updateData(&display);
display.clear();
display.drawXbm(26,0,logo1_width,logo1_height,logo1_bits);
display.display();
delay(3000);
display.clear();
display.setTextAlignment(TEXT_ALIGN_LEFT);
display.setFont(ArialMT_Plain_10);
display.drawString(0,0,"LOADING");
display.display();
delay(2000);
display.drawString(0,10,"TIME AND DATE");
display.display();
delay(2000);
display.drawString(0,20,"TEMPERATURE");
display.display();
delay(2000);
display.drawString(0,30,"HUMIDITY");
display.display();
delay(2000);
display.drawString(0,40,"FORECAST");
display.display();
delay(2000);
display.drawString(0,50,"INITIALIZING GUI");
display.display();
delay(2000);
}
void loop() {
if (millis() - timeSinceLastWUpdate > (1000L*UPDATE_INTERVAL_SECS)) {
setReadyForWeatherUpdate();
timeSinceLastWUpdate = millis();
}
if (readyForWeatherUpdate && ui.getUiState()->frameState == FIXED) {
updateData(&display);
}
int remainingTimeBudget = ui.update();
if (remainingTimeBudget > 0) {
// You can do some work here
// Don't do stuff if you are below your
// time budget.
delay(remainingTimeBudget);
}
}
void drawProgress(OLEDDisplay *display, int percentage, String label) {
display->clear();
display->setTextAlignment(TEXT_ALIGN_CENTER);
display->setFont(ArialMT_Plain_10);
display->drawString(64, 10, label);
display->drawProgressBar(2, 28, 124, 10, percentage);
display->display();
}
void updateData(OLEDDisplay *display) {
drawProgress(display, 10, "Updating time...");
drawProgress(display, 30, "Updating weather...");
currentWeatherClient.setMetric(IS_METRIC);
currentWeatherClient.setLanguage(OPEN_WEATHER_MAP_LANGUAGE);
currentWeatherClient.updateCurrentById(¤tWeather, OPEN_WEATHER_MAP_APP_ID, OPEN_WEATHER_MAP_LOCATION_ID);
drawProgress(display, 50, "Updating forecasts...");
forecastClient.setMetric(IS_METRIC);
forecastClient.setLanguage(OPEN_WEATHER_MAP_LANGUAGE);
uint8_t allowedHours[] = {12};
forecastClient.setAllowedHours(allowedHours, sizeof(allowedHours));
forecastClient.updateForecastsById(forecasts, OPEN_WEATHER_MAP_APP_ID, OPEN_WEATHER_MAP_LOCATION_ID, MAX_FORECASTS);
readyForWeatherUpdate = false;
drawProgress(display, 100, "Done...");
delay(1000);
}
void drawDateTime(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y) {
now = time(nullptr);
struct tm* timeInfo;
timeInfo = localtime(&now);
char buff[16];
display->setTextAlignment(TEXT_ALIGN_CENTER);
display->setFont(ArialMT_Plain_10);
String date = WDAY_NAMES[timeInfo->tm_wday];
sprintf_P(buff, PSTR("%s, %02d/%02d/%04d"), WDAY_NAMES[timeInfo->tm_wday].c_str(), timeInfo->tm_mday, timeInfo->tm_mon+1, timeInfo->tm_year + 1900);
display->drawString(64 + x, 5 + y, String(buff));
display->setFont(ArialMT_Plain_24);
sprintf_P(buff, PSTR("%02d:%02d:%02d"), timeInfo->tm_hour, timeInfo->tm_min, timeInfo->tm_sec);
display->drawString(64 + x, 15 + y, String(buff));
display->setTextAlignment(TEXT_ALIGN_LEFT);
}
void drawTemp(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y) {
float temperature = dht.readTemperature();
display->setTextAlignment(TEXT_ALIGN_CENTER);
display->setFont(ArialMT_Plain_10);
display->drawString(64 + x, 5 + y, "Room Temperature");
display->setFont(ArialMT_Plain_24);
display->drawString(64 + x, 15 + y, String(temperature,1)+("°C"));
display->setTextAlignment(TEXT_ALIGN_LEFT);
}
void drawHum(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y) {
int humidity = dht.readHumidity();
display->setTextAlignment(TEXT_ALIGN_CENTER);
display->setFont(ArialMT_Plain_10);
display->drawString(64 + x, 5 + y, "Humidity");
display->setFont(ArialMT_Plain_24);
display->drawString(64 + x, 15 + y, String(humidity)+(" %"));
display->setTextAlignment(TEXT_ALIGN_LEFT);
}
void drawCurrentWeather(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y) {
display->setFont(ArialMT_Plain_10);
display->setTextAlignment(TEXT_ALIGN_CENTER);
display->drawString(64 + x, 38 + y, currentWeather.description);
display->setFont(ArialMT_Plain_24);
display->setTextAlignment(TEXT_ALIGN_LEFT);
String temp = String(currentWeather.temp, 1) + (IS_METRIC ? "°C" : "°F");
display->drawString(51 + x, 5 + y, temp);
display->setFont(Meteocons_Plain_36);
display->setTextAlignment(TEXT_ALIGN_CENTER);
display->drawString(23 + x, 0 + y, currentWeather.iconMeteoCon);
}
void drawForecast(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y) {
drawForecastDetails(display, x, y, 0);
drawForecastDetails(display, x + 44, y, 1);
drawForecastDetails(display, x + 88, y, 2);
}
void drawForecastDetails(OLEDDisplay *display, int x, int y, int dayIndex) {
time_t observationTimestamp = forecasts[dayIndex].observationTime;
struct tm* timeInfo;
timeInfo = localtime(&observationTimestamp);
display->setTextAlignment(TEXT_ALIGN_CENTER);
display->setFont(ArialMT_Plain_10);
display->drawString(x + 20, y, WDAY_NAMES[timeInfo->tm_wday]);
display->setFont(Meteocons_Plain_21);
display->drawString(x + 20, y + 12, forecasts[dayIndex].iconMeteoCon);
String temp = String(forecasts[dayIndex].temp, 0) + (IS_METRIC ? "°C" : "°F");
display->setFont(ArialMT_Plain_10);
display->drawString(x + 20, y + 34, temp);
display->setTextAlignment(TEXT_ALIGN_LEFT);
}
void drawHeaderOverlay(OLEDDisplay *display, OLEDDisplayUiState* state) {
now = time(nullptr);
struct tm* timeInfo;
timeInfo = localtime(&now);
char buff[14];
sprintf_P(buff, PSTR("%02d:%02d"), timeInfo->tm_hour, timeInfo->tm_min);
display->setColor(WHITE);
display->setFont(ArialMT_Plain_10);
display->setTextAlignment(TEXT_ALIGN_LEFT);
display->drawString(0, 54, String(buff));
display->setTextAlignment(TEXT_ALIGN_RIGHT);
String temp = String(currentWeather.temp, 1) + (IS_METRIC ? "°C" : "°F");
display->drawString(128, 54, temp);
display->drawHorizontalLine(0, 52, 128);
}
void setReadyForWeatherUpdate() {
Serial.println("Setting readyForUpdate to true");
readyForWeatherUpdate = true;
}
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