Step-by-Step Guide
1
Materials List
- 1 Arduino Uno
- 1 DHT11 temperature and humidity sensor
- 1 I2C LCD display (2x16 or 4x20)
- 1 Breadboard
- Jumper wires
- 1 Resistor (optional)
Click to expand
2
Assembling
1. Connect the DHT11 sensor to the Arduino Uno: VCC to 5V, GND to GND, and DOUT to any digital pin (e.g., pin 2).
2. Connect the I2C LCD display to the Arduino Uno: VCC to 5V, GND to GND, SCL to SCL, and SDA to SDA.
3. Connect the jumper wires to the Breadboard and connect the components.
4. If using a resistor, connect it between the DHT11 sensor's VCC and the Arduino Uno's 5V pin.
3
Arduino Code & Libraries
The project requires the 'DHT' library for the DHT11 sensor and the 'LiquidCrystal_I2C' library for the I2C LCD display.
arduino code:
#define DHTPIN 2
#define DHTTYPE DHT11
#define LCD_ADDRESS 0x27 DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(LCD_ADDRESS, 16, 2);
void setup() {
Serial.begin(9600);
lcd.init();
lcd.backlight();
dht.begin();
}
void loop() {
float temperature = dht.readTemperature();
float humidity = dht.readHumidity();
lcd.setCursor(0, 0);
lcd.print("Temp: ");
lcd.print(temperature);
lcd.print("C");
lcd.setCursor(0, 1);
lcd.print("Humidity: ");
lcd.print(humidity);
lcd.print("%");
delay(1000);
}
Project Resources
No downloadable resources added yet.
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