It has an 8-bit microcontroller on-board to output the values of temperature and humidity as serial data through one-wire protocol. Meaning, the sensor has only one data pin ... DHT11 Temperature & ...

Circuit diagram. Here is the circuit diagram of this project. The DHT11 sensor and a HD44780-based character LCD are both interfaced to the PIC16F628A microcontroller, which runs at 4.0 MHz clock ...