CODE
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_Sensor.h>
#include "DHT.h"
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET 4
//Adafruit_SH1106 display(OLED_RESET);
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT);
#define DHTPIN 2 // Digital pin connected to the DHT sensor
#define BLUE 0x001F
// Uncomment the type of sensor in use:
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
DHT dht(DHTPIN, DHTTYPE);
void setup() {
Serial.begin(115200);
dht.begin();
// display.begin(SH1106_SWITCHCAPVCC, 0x3C);
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
delay(20);
display.clearDisplay();
display.setTextColor(SSD1306_WHITE);
// display.setTextColor(BLUE);
}
void loop() {
delay(20);
//read temperature and humidity
float t = dht.readTemperature();
float h = dht.readHumidity();
if (isnan(h) || isnan(t)) {
Serial.println("Failed to read from DHT sensor!");
}
Serial.println(t);
Serial.println(h);
//clear display
display.clearDisplay();
// display temperature
display.setTextSize(1);
display.setCursor(0,7);
//display.setTextColor(BLUE);
display.print("Temperature: ");
display.setTextSize(2);
display.setCursor(0,16);
display.print(t);
display.print(" ");
display.setTextSize(1);
display.cp437(true);
display.write(167);
display.setTextSize(2);
display.print("C");
// display humidity
display.setTextSize(1);
display.setCursor(0, 37);
display.print("Humidity: ");
display.setTextSize(2);
display.setCursor(0, 50);
display.print(h);
display.print(" %");
display.display();
}