https://github.com/walidabazo/ttgo-t-display-with-dht11-and-dht22temperature-sensor
https://github.com/walidabazo/ttgo-t-display-with-dht11-and-dht22temperature-sensor
Last synced: about 2 months ago
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- Host: GitHub
- URL: https://github.com/walidabazo/ttgo-t-display-with-dht11-and-dht22temperature-sensor
- Owner: walidabazo
- Created: 2023-08-19T04:23:35.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2023-08-19T04:29:49.000Z (over 1 year ago)
- Last Synced: 2025-01-09T17:04:23.460Z (4 months ago)
- Size: 1.95 KB
- Stars: 3
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Project ESP32 development using the TTGO T-DISPLAY
# TTGO-T-Display-with-DHT11-and-DHT22Temperature-Sensor
This tutorial shows how to use the DHT11 and DHT22 temperature and humidity sensors with the TTGO T-DISPLAY using Arduino IDE.
We will go through a quick introduction to these sensors
/**************************************************************************
TTGO T-Display ST7789 OLED based on Adafruit example
https://github.com/adafruit/Adafruit-ST7735-Library/blob/master/examples/graphicstest/graphicstest.ino
**************************************************************************/
#include // Core graphics library
#include // Hardware-specific library for ST7789
#include
#include
// pinouts from https://github.com/Xinyuan-LilyGO/TTGO-T-Display
#define TFT_MOSI 19
#define TFT_SCLK 18
#define TFT_CS 5
#define TFT_DC 16
#define TFT_RST 23
#define TFT_BL 4
#define DHTPIN 17
#define DHTTYPE DHT11
// constructor for data object named tft
Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);
DHT dht(DHTPIN, DHTTYPE);
void setup(void)
{
Serial.begin(9600);
Serial.print(F("Hello! ST77xx TFT Test"));
pinMode(TFT_BL, OUTPUT); // TTGO T-Display enable Backlight pin 4
digitalWrite(TFT_BL, HIGH); // T-Display turn on Backlight
tft.init(135, 240); // Initialize ST7789 240x135
Serial.println(F("Initialized"));
tft.setRotation(1);
dht.begin();
}
void loop()
{
// tft print function!
tftPrintTest();
delay(4000);
}
void tftPrintTest() {
int h = dht.readHumidity();
int h = dht.readHumidity();
//Read the moisture content in %.
int t = dht.readTemperature();
//Read the temperature in degrees Celsius
float f = dht.readTemperature(true);
// true returns the temperature in Fahrenheit
if (isnan(h) || isnan(t) || isnan(f)) {
Serial.println("Failed reception");
return;
//Returns an error if the ESP32 does not receive any measurements
}
Serial.print("Humidite: ");
Serial.print(h);
Serial.print("% Temperature: ");
Serial.print(t);
Serial.print("°C, ");
Serial.print(f);
Serial.println("°F");
tft.setTextWrap(false);
tft.fillScreen(ST77XX_BLACK);
tft.setCursor(0, 20);
tft.setTextColor(ST77XX_YELLOW);
tft.setTextSize(6);
tft.print(h);
tft.setTextColor(ST77XX_YELLOW);
tft.setTextSize(6);
tft.println(" % ");
tft.setTextColor(ST77XX_GREEN);
tft.setTextSize(7);
tft.print(t);
tft.setTextColor(ST77XX_GREEN);
tft.setTextSize(7);
tft.print(" ");
delay(1500);
}