DHT11 Humidity and Temperature Sensor

DHT11 is an affordable sensor that gives calibrated digital outputs for ambient temperature and relative humidity.

It comes throughout a single row 4-pin bundle and operates from 3 to 5 .5V energy provide. It could possibly measure temperature from 0-50 °C with an accuracy of ±2°C and ratio ranging from 20-95% with an accuracy of ±5%. It’s got its personal proprietary 1-wire protocol, and thus, the communication between the sensor and a microcontroller is not potential by means of a direct interface with any of its peripherals. The protocol should be carried out inside the firmware of the MCU by means of bit-banging of an I/O pin.

Low-cost temperature and humidity sensor. Requires one digital I/O pin to learn each temperature and humidity values.

The DHT11 sensor can both be bought as a sensor or as a module. Both manner, the efficiency of the sensor is identical. The sensor will come as a 4-pin bundle out of which solely three pins are going for use whereas the module will accompany three pins.

The one distinction between the sensor and module is that the module could have a filtering capacitor and pull-up resistor inbuilt, and for the sensor, you have to use them externally if required. The DHT11 could also be a generally used Temperature and humidity sensor. The sensor comes with a fanatical NTC to dwell temperature and an 8-bit microcontroller to output the values of temperature and humidity as serial knowledge. The sensor can be manufacturing facility calibrated and therefore straightforward to interface with different microcontrollers.

The sensor can measure temperature from 0°C to 50°C and humidity from 20% to 90% with an accuracy of ±1°C and ±1%. So if you happen to’re trying to dwell throughout this vary then this sensor might be the correct alternative for you.

It’s utilized in Measure temperature and humidity, Native Climate station, Computerized local weather management and Setting monitoring.