i use nodemcu ,dht11 sensor ,i2c lcd
i want to display temperature and humidity on lcd
how to modify code ?
//#define BLYNK_PRINT Serial // Comment this out to disable prints and save space
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager
#include <EEPROM.h>
#include <DHT.h>
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "4ecda56a656542f0825bb1704b711c4b";
#define DHTPIN 2 // What digital pin we're connected to
// Uncomment whatever type you're using!
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22, AM2302, AM2321
//#define DHTTYPE DHT21 // DHT 21, AM2301
DHT dht(DHTPIN, DHTTYPE);
BlynkTimer timer;
// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void sendSensor()
{
float h = dht.readHumidity();
float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
if (isnan(h) || isnan(t)) {
Serial.println("Failed to read from DHT sensor!");
return;
}
// You can send any value at any time.
// Please don't send more that 10 values per second.
Blynk.virtualWrite(V5, h);
Blynk.virtualWrite(V6, t);
}
void setup()
{
EEPROM.begin(512);
Serial.begin(115200);
WiFiManager wifiManager;
//wifiManager.resetSettings(); //Uncomment this to wipe WiFi settings from EEPROM on boot. Comment out and recompile/upload after 1 boot cycle.
wifiManager.autoConnect("NodeMCU");
//if you get here you have connected to the WiFi
Serial.println("connected...yeey :)");
pinMode(BUILTIN_LED, OUTPUT); // Initialize the BUILTIN_LED pin as an output, I like blinkies.
Blynk.begin(auth, WiFi.SSID().c_str(), WiFi.psk().c_str(), "cyrax.top", 8080);
dht.begin();
// Setup a function to be called every second
timer.setInterval(1000L, sendSensor);
}
void loop()
{
Blynk.run(); // Commented out for a short time.
timer.run();
}