![]() ![]() DHT11 fritzing circuit DHT11 Arduino Code The DHT11 data pin is connected to the arduino digital pin 2. The figure below shows the DHT11 sensor interfacing with arduino. The parts required for this tutorial are: DHT11 and DHT22 Pin ConfigurationĭHT11 and DHT22 have only three connections: Vcc, GND, and Data. Connect Pin 1 directly to Supply (3.3V or 5V), pin 4 to GND, and Pin 2 to the microcontroller pin with pull-up resistor to the supply voltage. The circuit diagram below shows DHT sensor Arduino circuit. ![]() In summary, the DHT22 a little more accurate have a slightly larger temperature and humidity range.ĭHT11 and DHT22 Specifications DHT11 Sensor ApplicationĭHT11 is usually used in Weather Stations, HVAC, Dehumidifier, data loggers, humidity regulators, Home Appliances, and Consumer Electronics. RangeĠ☌ to 50☌ (Temperature) 20% to 80% (Humidity)ĭHT11 Specifications DHT11 vs DHT22 Specificationsīoth DHT11 and DHT22 have the same pin configuration but have different characteristics. An integrated ADC converter converts the measured values into a digital signal, which is then output via the OneWire interface. It integrates a thermistor and a capacitive humidity sensor. ![]() The DHT11 temperature sensor range: 0 – 50☌ (☒☌) and DHT11 humidity sensor range: 20-80% (±5%). The DHT11 sensor is low-cost Temperature and Humidity sensor that is ideal for hobbyists and prototyping applications. ![]()
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