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DHT11 Digital Temperature Humidity Sensor Module in Pakistan
₨ 450
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DHT11 Digital Temperature Humidity Sensor Module in Pakistan
The DHT11 temperature and humidity sensor module for Arduino features an on-board power and data indicator LED, a built-in pull-up resistor, and a simple 3-pin or 4-pin breakout board. It operates on 3.3V to 5V, measuring 0–50°C temperatures and 20–80% humidity levels via a digital single-wire protocol. [1, 2, 3, 4, 5]
Module Features & Specs
- Operating Voltage: 3.3V to 5V DC
- Temperature Range: 0°C to 50°C (±2°C accuracy)
- Humidity Range: 20% to 80% RH (±5% accuracy)
- LED Indication: Power status and data transmission flash
- Interface: Single-wire digital output (no analog pins needed) [1, 2, 3, 4, 5]
Pin Connections
- VCC: Connect to Arduino 5V or 3.3V
- GND: Connect to Arduino GND (Ground)
- DATA / OUT: Connect to any digital pin on your Arduino (e.g., Pin 2) [1, 2, 3, 4]
Basic Arduino Code Setup
- Install the DHT sensor library by Adafruit via the Arduino IDE Library Manager.
- Use this sample code structure to read data: [1, 2]
cpp
#include <DHT.h>
#define DHTPIN 2 // Digital pin connected to the DHT data pin
#define DHTTYPE DHT11 // Defining sensor type as DHT11
DHT dht(DHTPIN, DHTTYPE);
void setup() {
Serial.begin(9600);
dht.begin();
}
void loop() {
delay(2000); // Wait 2 seconds between measurements
float h = dht.readHumidity();
float t = dht.readTemperature(); // Celsius
if (isnan(h) || isnan(t)) {
Serial.println("Failed to read from DHT sensor!");
return;
}
Serial.print("Humidity: ");
Serial.print(h);
Serial.print("% Temperature: ");
Serial.print(t);
Serial.println("°C");
}
Use code with caution.
If you need help, tell me:
- Are you trying to add an extra external LED that turns on at a certain temperature?
- Are you having trouble with reading errors or wire setup?
