gistfile1.txt

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_RESET 4
Adafruit_SSD1306 display(OLED_RESET);

#define NUMFLAKES 10
#define XPOS 0
#define YPOS 1
#define DELTAY 2


#define LOGO16_GLCD_HEIGHT 16 
#define LOGO16_GLCD_WIDTH  16 
static const unsigned char PROGMEM logo16_glcd_bmp[] =
{ B00000000, B11000000,
  B00000001, B11000000,
  B00000001, B11000000,
  B00000011, B11100000,
  B11110011, B11100000,
  B11111110, B11111000,
  B01111110, B11111111,
  B00110011, B10011111,
  B00011111, B11111100,
  B00001101, B01110000,
  B00011011, B10100000,
  B00111111, B11100000,
  B00111111, B11110000,
  B01111100, B11110000,
  B01110000, B01110000,
  B00000000, B00110000 };

#if (SSD1306_LCDHEIGHT != 64)
#error("Height incorrect, please fix Adafruit_SSD1306.h!");
#endif

#include <dht11.h>

dht11 DHT11;

#define DHT11PIN 2

float temp;
float vorherige;

void setup()
{
  Serial.begin(115200);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();

}

void loop()
{
  display.clearDisplay();
  int chk = DHT11.read(DHT11PIN);
  
  vorherige = temp;
  
  temp = DHT11.temperature;
  
  display.setCursor(0,10);
  display.setTextColor(WHITE);
  display.setTextSize(2);
  display.println(temp);

 if(vorherige > temp)
  {
    display.drawLine(80, 20, 80, 40, WHITE);
    display.fillTriangle(70, 40, 90, 40, 80, 55, WHITE);  
  }
  if(vorherige == temp)
  {
    display.drawLine(80, 30, 105, 30, WHITE);
    display.fillTriangle(105, 40, 105, 20, 120, 30, WHITE);  
  }
  if(vorherige < temp)
  {
    display.drawLine(80, 40, 80, 20, WHITE); 
    display.fillTriangle(70, 20, 90, 20, 80, 5, WHITE);   
  }
  
  display.display();
  
  Serial.println(temp);
  
  delay(300000);
  
}