DHT 11 Sensor Humidity Temprature Sensor
The DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin (no analog input pins needed). It's fairly simple to use but requires careful timing to grab data.
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Sparkfun Connecting a DHT11 temperature and humidity sensor with an Arduino is a straightforward process. The DHT11 sensor is a basic and cost-effective sensor for measuring temperature and humidity. Here’s a step-by-step guide on how to connect and read data from a DHT11 sensor using an Arduino:
Components Needed:
- Arduino board (e.g., Arduino Uno)
- DHT11 temperature and humidity sensor
- Breadboard and jumper wires
DHT11 Sensor Pinout:
The DHT11 sensor typically has four pins:
- VCC: Power supply (typically +5V)
- GND: Ground (connect to Arduino GND)
- DATA: Data signal (connect to a digital pin on the Arduino)
Wiring Instructions:
-
Connect Power and Ground:
- VCC of the DHT11 sensor to 5V on the Arduino.
- GND of the DHT11 sensor to GND on the Arduino.
-
Connect Data Pin:
- DATA pin of the DHT11 sensor to a digital pin on the Arduino (e.g., digital pin 2).
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