The DHT11 is a digital temperature and humidity sensor. DHT11 sensor has a built-in NTC thermistor to measure humidity and a capacitive humidity sensor to measure temperature.
D igital temperature and humidity sensor DHT11 is a low-cost, easy-to-use sensor that is commonly used in a variety of applications. DHT11 sensor has a single data pin that is used to communicate with the host microcontroller. The sensor uses a one-wire protocol, which makes it easy to interface with the microcontroller. DHT11 sensor can be read by the microcontroller using a simple polling method.
The DHT11 sensor has a temperature range of 0°C to 50°C and a humidity range of 20% to 90%. The sensor has an accuracy of ±2°C and ±5%RH. The DHT11 sensor is a reliable and accurate sensor that is a good choice for many applications.
It is important to note that the DHT11 not designed to be powered by a higher voltage than 5.5V, as this could damage the sensor. The DHT11 is a digital temperature and humidity sensor that can power by a voltage range of 3.3V to 5.5V. The recommended input voltage for the DHT11 is 5V.
The DHT11 has a maximum current draw of 2.5mA, which is relatively low. This means that the DHT11 can power by a small battery or a USB power supply. The DHT11 has a data pin that used to communicate with the host microcontroller. The data pin pulled up to 5V by a 10K resistor. This means that the microcontroller can read the data from the DHT11 without having to provide any additional power to the sensor.
Features : –
The DHT11 is a digital temperature and humidity sensor that uses a capacitive humidity sensor and an NTC thermistor to measure the surrounding air. The capacitive humidity sensor consists of two electrodes with a moisture holding substrate as a dielectric between them. As the humidity levels change, the capacitance of the sensor changes. The NTC thermistor is a resistor whose resistance decreases as the temperature increases.
Here are some of the advantages of using the DHT11 sensor:
- Low cost
- Easy to use
- Single data pin
- One-wire protocol
- Wide temperature and humidity range
- Good accuracy
DHT11 Temperature Humidity Sensor Specifications : –
The DHT-11 sensor has a single data pin that used to communicate with the host microcontroller. The sensor uses a one-wire protocol, which makes it easy to interface with the microcontroller. The DHT11 sensor can be read by the microcontroller using a simple polling method.
The DHT-11 sensor has a temperature range of 0°C to 50°C and a humidity range of 20% to 90%. The sensor has an accuracy of ±2°C and ±5%RH.
Here are some of the specifications of the DHT-11 digital temperature and humidity sensor:
- Operating voltage: 3.3V to 5.5V
- Current draw: 2.5mA
- Data pin: Single data pin
- Communication protocol: One-wire protocol
- Temperature range: 0°C to 50°C
- Humidity range: 20% to 90%
- Accuracy: ±2°C and ±5%RH
- Response time: 20 milliseconds
- Dimensions: 15.5mm x 12mm x 5.5mm
DHT11 Temperature Humidity Sensor Pin Descriptions : –
The DHT-11 digital temperature and humidity sensor has 4 pins:
- VCC: The VCC pin is the power supply pin for the sensor. It should connect to a voltage source of 3.3V to 5.5V.
- DATA: The DATA pin is the data pin for the sensor. It used to communicate with the sensor using the one-wire protocol.
- GND: The GND pin is the ground pin for the sensor. It should connect to a common ground.
- NC: The NC pin is not connected to anything. It typically left unconnected.
The DHT-11 sensor is a reliable and accurate sensor that is a good choice for many applications. The low cost and easy-to-use interface make the DHT-11 a popular choice for hobbyists and professionals alike.
DHT11 Temperature Humidity Sensor Applications : –
DHT-11 digital temperature and humidity sensor is a versatile sensor that can use in a variety of applications. Some of the most common applications for the DHT-11 sensor include:
- Weather stations
- Home automation
- Agriculture
- Industrial applications
- Scientific research
Overall, the DHT-11 is a good choice for applications where low cost and ease of use are more important than accuracy.
Package : –
1 x DHT-11 Temperature Humidity Sensor