Materials:-
NodeMCU ESP8266 16x2 LCD Display Potentiometer 10k ohm BreadBoard Wires
Circuit:-
Code:-
/* Viral Science www.viralsciencecreativity.com www.youtube.com/c/viralscience
* Corona Virus Tracker 16X2 LCD Display
* Corona Data: https://www.worldometers.info/coronavirus/
* ThingSpeak: https://thingspeak.com/
*/
#include <ESP8266WiFi.h> //Use ESP8266 functions
#include <ESP8266HTTPClient.h>
#include <LiquidCrystal.h>
#include <Wire.h> // Only needed for Arduino 1.6.5 and earlier
LiquidCrystal lcd(D0, D1, D2, D3, D4, D5);
const char* ssid = "-----------"; //WIFI SSID Name
const char* password = "----------"; //WIFI Password
const char* host = "api.thingspeak.com"; //We read the data from this host
const int httpPortRead = 80;
const char* url1 = "/apps/thinghttp/send_request?api_key=4SHYJLK0BWQ7O9MQ"; //Change this URL Cases
const char* url2 = "/apps/thinghttp/send_request?api_key=P13YBNR40WI0LDTU"; //Deaths
const char* url3 = "/apps/thinghttp/send_request?api_key=EOEI1HVPDOAG4RNL"; //Recovered
int To_remove; //There are some irrelevant data on the string and here's how I keep the index
//of those characters
String Cases,Deaths,Recovered,Data_Raw,Data_Raw_1,Data_Raw_2,Data_Raw_3; //Here I keep the numbers that I got
WiFiClient client; //Create a WiFi client and http client
HTTPClient http;
void setup() {
lcd.begin(16, 2);
lcd.setCursor(1, 0);
lcd.print("Covid-19 INDIA"); //Change Your Country Name
lcd.setCursor(1, 1);
lcd.print("Viral Science"); //Change Name if you want
Serial.begin(115200);
WiFi.disconnect(); //Disconnect and reconnect to the Wifi you set
delay(1000);
WiFi.begin(ssid, password);
Serial.println("Connected to the WiFi network"); //Display feedback on the serial monitor
Serial.println(WiFi.localIP());
}
void loop() {
//Reading 1: Reading of cases
if( http.begin(host,httpPortRead,url1)) //Connect to the host and the url
{
int httpCode = http.GET(); //Check feedback if there's a response
if (httpCode > 0)
{
if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY)
{
Data_Raw = http.getString(); //Here we store the raw data string
Data_Raw_1 = Data_Raw;
To_remove = Data_Raw_1.indexOf(">"); //I look for the position of this symbol ">"
Data_Raw_1.remove(0,To_remove+1); //I remove it and everything that's before
To_remove = Data_Raw_1.indexOf("<"); //I look for the position of this symbol ">"
Data_Raw_1.remove(To_remove,Data_Raw_1.length()); //I remove it and everything that's after
//Example: This is the raw data received <td style="font-weight: bold; text-align:right">63,927</td>
//First we look for ">" and we remove everything before it including it
//We stay with this 63,927</td>
//We look for "<" symbol and we remove it + everything after
//We keep only this 63,927 as string
Cases=Data_Raw_1;
Serial.print("Cases: "); //I choosed to display it on the serial monitor to help you debug
Serial.println(Cases);
Data_Raw_2=Data_Raw;
To_remove = Data_Raw_2.indexOf("<span>");
Data_Raw_2.remove(0,To_remove+6);
Data_Raw_3=Data_Raw_2;
To_remove = Data_Raw_2.indexOf("</span>");
Data_Raw_2.remove(To_remove,Data_Raw_2.length());
Deaths=Data_Raw_2;
Serial.print("Deaths: ");
Serial.println(Deaths);
To_remove = Data_Raw_3.indexOf("<span>");
Data_Raw_3.remove(0,To_remove+6);
To_remove = Data_Raw_3.indexOf("<");
Data_Raw_3.remove(To_remove,Data_Raw_3.length());
Recovered=Data_Raw_3;
Serial.print("Recovered: ");
Serial.println(Recovered);
}
}
else //If we can't get data
{
Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
}
http.end();
}
else //If we can't connect to the HTTP
{
Serial.printf("[HTTP} Unable to connect\n");
}
while (WiFi.status() != WL_CONNECTED) //In case the Wifi connexion is lost
{
WiFi.disconnect();
delay(1000);
WiFi.begin(ssid, password);
Serial.println("Reconnecting to WiFi..");
delay(10000);
}
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Cases:");
lcd.setCursor(7, 0);
lcd.print(Cases);
lcd.setCursor(0, 1);
lcd.print("D:");
lcd.setCursor(2, 1);
lcd.print(Deaths);
lcd.setCursor(8, 1);
lcd.print("R:");
lcd.setCursor(10, 1);
lcd.print(Recovered);
}