Keyestudio ARDUINO maker learning kit, Manual

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Project 17: DHT11 Temperature and Humidity Sensor
Introduction
This DHT11 Temperature and Humidity Sensor features calibrated digital signal output with the
temperature and humidity sensor complex. Its technology ensures high reliability and excellent
long-term stability. A high-performance 8-bit microcontroller is connected. This sensor includes a
resistive element and a sense of wet NTC temperature measuring devices. It has excellent quality,
fast response, anti-interference ability and high cost performance advantages.
Each DHT11 sensor features extremely accurate calibration data of humidity calibration
chamber. The calibration coefficients stored in the OTP program memory, internal sensors detect
signals in the process, and we should call these calibration coefficients. The single-wire serial
interface system is integrated to make it quick and easy. Qualities of small size, low power, and
20-meter signal transmission distance make it a wide applied application and even the most
demanding one. Convenient connection, special packages can be provided according to users
need.
Hardware required
Temperature and humidity unit *1
10K resistor *1
Breadboard *1
Breadboard jumper wires *several
Schematic diagram: