The schematic diagram for the DHT11 module is given below. The DHT11 module has only a very low number of parts that includes the DHT11, pullup resistor, bypass capacitor, and power led with a current limiting resistor. VCC Provides power for the module, Connect to the 5V pin of the Arduino.
GND Ground Connected to Ground pin of the Arduino. The pinout of a DHT11 Sensor module is as follows: In which two are for power and one is for communication. These are connected to a high-performance 8-bit microcontroller, offering excellent quality, fast response, anti-interference ability, and cost-effectiveness. This sensor includes an NTC for temperature measurement and a resistive-type humidity measurement component for humidity measurement. The exclusive digital-signal-acquisition technique and temperature & humidity sensing technology ensure high reliability and excellent long-term stability. DHT11 Module features a temperature & humidity sensor complex with a calibrated digital signal output.
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