# DFRobot_SHT20

**Repository Path**: dfrobot/DFRobot_SHT20

## Basic Information

- **Project Name**: DFRobot_SHT20
- **Description**: No description available
- **Primary Language**: C++
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-06-02
- **Last Updated**: 2022-05-18

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# DFRobot_SHT20
* [中文版](./README_CN.md)

This is a SHT20 I2C temperature & humidity sensor with waterproof probe.
It comes with the 4C CMOSens® SHT20 temperature & humidity sensor chip, and the probe has gone through dual waterproof protection.
The SHT20 I2C temperature & humidity sensor adopt Sensirion new technique.
Besides the capacitive type humidity sensor and the band gap temperature sensor, the chip contains an amplifier, A/D converter, OTP memory and a digital processing unit.
Compared with early SHT1x series and SHT7x series, SHT20 shows better reliability and long-term stability.
It can measure surrounding environment temperature and relative air humidity precisely.


![产品实物图](./resources/images/SHT20.png)


## Product Link (https://www.dfrobot.com/product-1636.html)
    SKU: SEN0227


## Table of Contents

* [Summary](#summary)
* [Installation](#installation)
* [Methods](#methods)
* [Compatibility](#compatibility)
* [History](#history)
* [Credits](#credits)


## Summary

* The Arduino SHT20 waterproof temperature & humidity sensor adopts dual waterproof protection.
* The inner PCB has perfusion and encapsulation protection, and the probe enclosure is made of PE waterproof materials.
* This is a special waterproof breathable material that allows water molecules to seep in, blocking water droplets from seeping in.
* The sensor won't be damaged even if it is submerged in water for a long time.
* There is a built-in 10k Pull-up resistor and 0.1uf filter capacitor, so it can be used directly with the microcontroller such as Arduino.
* Recommend DFRobot Gravity 4Pin Sensor Adapter, it is quite convenient.


## Installation

To use this library, first download the library file, paste it into the \Arduino\libraries directory, 
then open the examples folder and run the demo in the folder.


## Methods

```C++

  /**
   * @fn initSHT20
   * @brief Init function
   * @return None
   */
  void initSHT20(void);

  /**
   * @fn readHumidity
   * @brief Read the measured data of air humidity
   * @return Return the measured air humidity data of float type, unit: %
   */
  float readHumidity(void);

  /**
   * @fn readTemperature
   * @brief Read the measured temp data
   * @return Return the measured temp data of float type, unit: C
   */
  float readTemperature(void);

  /**
   * @fn checkSHT20
   * @brief Check the current status information of SHT20
   * @n Status information: End of battery, Heater enabled, Disable OTP reload
   * @n Check result: yes, no
   * @return None
   */
  void checkSHT20(void);

```


## Compatibility

MCU                | Work Well    | Work Wrong   | Untested    | Remarks
------------------ | :----------: | :----------: | :---------: | :----:
Arduino Uno        |      √       |              |             |
Arduino MEGA2560   |      √       |              |             |
Arduino Leonardo   |      √       |              |             |
FireBeetle-ESP8266 |      √       |              |             |
FireBeetle-ESP32   |      √       |              |             |
FireBeetle-M0      |      √       |              |             |
Micro:bit          |      √       |              |             |


## History

- 2017-9-12 - Version 1.0.0 released.


## Credits

Written by Zhangjiawei(jiawei.zhang@dfrobot.com), 2021. (Welcome to our [website](https://www.dfrobot.com/))