display tempearture and humidity using oled display

STEPS:

connect circuit as per ciecuit diagram

CIRCUIT DIAGRAM:

LIBRARY LINK:

https://drive.google.com/open?id=14AfJzTNVJtmP7BnHcqNukXyopVu94iA7

adafruit library link:

https://github.com/adafruit/Adafruit_SSD1306

gfx:

https://github.com/adafruit/Adafruit-GFX-Library

VIDEO:

CODE:

#include <SPI.h>

#include <Wire.h>

#include <Adafruit_GFX.h>

#include <Adafruit_SSD1306.h>

#include "DHT.h"

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)

#define OLED_RESET  LED_BUILTIN // 4 for arudino Reset pin # (or -1 if sharing Arduino reset pin)

Adafruit_SSD1306 display(OLED_RESET);

#define DHTPIN 2 //gpio 4

#define DHTTYPE DHT11   // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);

void setup() {

display.begin(SSD1306_SWITCHCAPVCC, 0x3C);

  

  display.clearDisplay();

  dht.begin();

}

void loop() {

  // Wait a few seconds between measurements.

  delay(2000);

 displayOled();

  

  

}

void displayOled() {

  // Read humidity

  float h = dht.readHumidity();

  // Read temperature as Celsius (the default)

  float t = dht.readTemperature();

  // Read temperature as Fahrenheit (isFahrenheit = true)

  float f = dht.readTemperature(true);

  // Compute heat index in Fahrenheit (the default)

  float hif = dht.computeHeatIndex(f, h);

  // Compute heat index in Celsius (isFahreheit = false)

  float hic = dht.computeHeatIndex(t, h, false);

  display.clearDisplay();

  display.setTextColor(WHITE);

  display.setTextSize(1);

  display.setCursor(5, 15);

  display.print("Humidity:");

  display.setCursor(80, 15);

  display.print(h);

  display.print("%");

  display.setCursor(5, 30);

  display.print("Temperature:");

  display.setCursor(80, 30);

  display.print(t);

  display.print((char)247); // degree symbol

  display.print("C");

  display.setCursor(5, 45);

  display.print("Heat Index:");

  display.setCursor(80, 45);

  display.print(hic);

  display.print((char)247); // degree symbol

  display.print("C");

  display.display();

}