Water temp NTC & DHT11

dht11.ino

#include "DHT.h"

DHT dht;

const int dhtPin = D0;

struct DhtValue {
  float humidity;
  float celcius;
  float fahrenheit;
  float kelvin;
};

void setup()
{
  Serial.begin(9600);
  dht.setup(dhtPin);
}

void loop()
{
  delay(dht.getMinimumSamplingPeriod());

  DhtValue dhtValue = readDht();
  printDht(dhtValue);
}

DhtValue readDht() {
  DhtValue dhtValue;
  dhtValue.humidity = dht.getHumidity();
  dhtValue.celcius = dht.getTemperature();
  dhtValue.fahrenheit = (dhtValue.celcius * 1.8) + 32;
  dhtValue.kelvin = dhtValue.celcius + 293.15;

  return dhtValue;
}

void printDht(DhtValue dhtValue) {
  Serial.print("Temperature:");
  Serial.print("\t");
  Serial.print(dhtValue.celcius);      
  Serial.print("C\t\t");
  Serial.print(dhtValue.kelvin);        
  Serial.print("K\t\t");
  Serial.print(dhtValue.fahrenheit);   
  Serial.print("F\t\t");
  Serial.print(dhtValue.humidity);   
  Serial.println("%");
}

dht11_with_blynk.ino

#define BLYNK_TEMPLATE_ID "YOUR_TEMPLATE_ID"
#define BLYNK_DEVICE_NAME "YOUR_DEVICE_NAME"
#define BLYNK_AUTH_TOKEN "YOUR_DEVICE_TOKEN"
#define BLYNK_FIRMWARE_VERSION        "0.1.0"
#define BLYNK_PRINT Serial
#define APP_DEBUG

#define WIFI_SSID "YOUR_WIFI_SSID"     
#define WIFI_PASSWORD "YOUR_WIFI_PASSWORD"  

#include "DHT.h"

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

DHT dht;

const int dhtPin = D0;

struct DhtValue {
  float humidity;
  float celcius;
  float fahrenheit;
  float kelvin;
};

void setup()
{
  Serial.begin(9600);
  dht.setup(dhtPin);
  Blynk.begin(BLYNK_AUTH_TOKEN, WIFI_SSID, WIFI_PASSWORD);
}

void loop()
{
  delay(dht.getMinimumSamplingPeriod());

  DhtValue dhtValue = readDht();
  printDht(dhtValue);

  Blynk.virtualWrite(V0,dhtValue.celcius);  
  Blynk.virtualWrite(V1,dhtValue.fahrenheit);
}

DhtValue readDht() {
  DhtValue dhtValue;
  dhtValue.humidity = dht.getHumidity();
  dhtValue.celcius = dht.getTemperature();
  dhtValue.fahrenheit = (dhtValue.celcius * 1.8) + 32;
  dhtValue.kelvin = dhtValue.celcius + 293.15;

  return dhtValue;
}

void printDht(DhtValue dhtValue) {
  Serial.print("Temperature:");
  Serial.print("\t");
  Serial.print(dhtValue.celcius);      
  Serial.print("C\t\t");
  Serial.print(dhtValue.kelvin);        
  Serial.print("K\t\t");
  Serial.print(dhtValue.fahrenheit);   
  Serial.print("F\t\t");
  Serial.print(dhtValue.humidity);   
  Serial.println("%");
}

water_temp_ntc.ino

const int tempPin = A0;

struct Temperature {
  float kelvin;
  float celcius;
  float fahrenheit;
} ;

void setup() {
  Serial.begin(9600);
  
  pinMode(tempPin,INPUT);
}

void loop() {
  Temperature temp = readTemp();
  printTemp(temp);
 
  delay(1000);
}

Temperature readTemp() {
  const int rt0  = 10000;  // Ω
  const int B = 3977;   // K
  const int vcc =  5;   //Supply voltage
  const int r =  10000;  //R=10KΩ

  float rt, vr, ln, tempValue, t0, sensorValue;
  float a = A0;

  t0 = 25 + 273.15;      
  sensorValue = analogRead(tempPin);              
  sensorValue = (5.00 / 1023.00) * sensorValue;      
  vr = vcc - sensorValue;
  rt = sensorValue / (vr / r);               

  ln = log(rt / rt0);
  tempValue = (1 / ((ln / B) + (1 / t0))); 

  Temperature temp;
  temp.kelvin = tempValue;
  temp.celcius = tempValue - 273.15;
  temp.fahrenheit = (temp.celcius * 1.8) + 32;

  return temp;
}

void printTemp(Temperature temp) {
  Serial.print("Temperature:");
  Serial.print("\t");
  Serial.print(temp.celcius);      
  Serial.print("C\t\t");
  Serial.print(temp.kelvin);        
  Serial.print("K\t\t");
  Serial.print(temp.fahrenheit);   
  Serial.println("F");
}

wifi_ap.ino

#include <ESP8266WiFi.h>

#define AP_SSID "AP_SSID"     
#define AP_PASSWORD "AP_PASSWORD"  

void setup() {
  Serial.begin(9600);
  Serial.println();
  Serial.print("Setting AP ... ");
  boolean result = WiFi.softAP(AP_SSID, AP_PASSWORD);
  
  if (result == true) {
    Serial.println("Ready");
  } else {
    Serial.println("Failed!");
  }
}

void loop(){
  Serial.printf("Stations connected = %d\n", WiFi.softAPgetStationNum());
  delay(3000);
}

wifi_connect.ino

#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>

#define WIFI_SSID "YOUR_WIFI_SSID"      
#define WIFI_PASSWORD "YOUR_WIFI_PASSWORD"   

void setup() {
  Serial.begin(9600);
  
  connectWifi();
}

void loop() {

}

void connectWifi() {
  Serial.println("Communication Started \n\n");
  delay(1000);

  WiFi.mode(WIFI_STA);
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);  //try to connect with wifi
  Serial.print("Connecting to ");
  Serial.print(WIFI_SSID);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }

  Serial.println();
  Serial.print("Connected to ");
  Serial.println(WIFI_SSID);
  Serial.print("IP Address is : ");
  Serial.println(WiFi.localIP());  //print local IP address

  delay(30);
}

wifi_station.ino

#include <ESP8266WiFi.h>

#define WIFI_SSID "YOUR_WIFI_SSID"      
#define WIFI_PASSWORD "YOUR_WIFI_PASSWORD"   

void setup() {
  Serial.println("Communication Started \n\n");
  delay(1000);

  WiFi.mode(WIFI_STA);
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);  //try to connect with wifi
  Serial.print("Connecting to ");
  Serial.print(WIFI_SSID);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }

  Serial.println();
  Serial.print("Connected to ");
  Serial.println(WIFI_SSID);
  Serial.print("IP Address is : ");
  Serial.println(WiFi.localIP());  //print local IP address

  delay(30);
}

void loop(){
}