The DHT11 sensor is made of two parts, the capacitive humidity sensor and the thermistor. There is also a basic chip inside that converts the analog signal to a digital signal with the temperature and the humidity.The digital signal is easy to read using a microcontroller. The result is shown on a LCD display.
- Ultra low cost
- 3V to 5V power and I/O
- 20% to 80% humidity reading with 5% accuracy
- 0°C to 50°C temparature reading with 2°C accuracy
- sample reading once every second.
The DHT11 has four pins to connect to a microocntroller:
|3||Not connected, not used.|
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