SHT20 온도 습도 센서 -I2C, 3.3V/5V

(SHT20 Temperature Humidity Sensor -I2C, 3.3V/5V)

IMG_0242

 

개요

  • 본 제품은 SHT20 온도 습도 센서 -I2C, 3.3V/5V입니다.
  • SHT20 온습도 센서를 기반으로 디자인된 제품으로 3.3V/5V 로 동작합니다.
  • I2C 인터페이스를 가지고 있습니다.

특징

  • Working voltage: 2.5V~5.5V

    Measuring temperature range: - 40 ℃~120 ℃

    Temperature accuracy: ±± 0.3 ℃

    Humidity measurement range: 0~100% RH

    Temperature accuracy: ± 3% RH

  • Serial No

    Pin Name

    Description

    1

    VCC

    Power input

    2

    GND

    Power supply ground

    3

    SCL

    I2C clock, built-in 10K pull-up

    4

    SDA

    I2C data, built-in 10K pull-up

    5

    NC

    Empty foot

    6

    NC

    Empty foot

    7

    GND

    Power supply ground

    8

    3V3

    3.3V output pin

문서

  • https://www.mediafire.com/file/hmq7t2v08om3p4i/SHT2x.rar/file
  • https://gist.github.com/myarduinosale/000dfe38b975943a4afa70512bf16d6d#file-m1505_arduino-ino

  • This module reads data through I2C interface. I2C device address is b1000000X, length is 7 bits, and X bit is read/write bit. The write device address is b10000000 (0x80), and the read device address is b10000000 (0x81). It is recommended to read the temperature and humidity at an interval of more than 1s.

    After starting transmission, the first I2C byte transmitted subsequently includes a 7-bit I2C device address (b10000 000) and a SDA direction bit (read R: 1, write W: 0). After the falling edge of the eighth SCL clock, pull down the SDA pin (ACK bit) to indicate that the sensor data reception is normal. After sending the measurement command, MCU must wait for the measurement to be completed. The basic commands are outlined in the following table. There are two different options, host mode and non host mode.

    Command

    definition

    code

    Trigger T measurement

    Hold host

    1110 0011

    Trigger RH test

    Hold host

    1110 0101

    Trigger T test

    Non persistent host

    1111 0011

    Trigger RH measurement

    Non persistent host

    1111 0101

    Write User Register

    1110 0110

    Read user register

    1110 0111

    Soft reset

    1111 1110

    Host mode data transmission process:

    Non host mode data transmission process:

    Temperature conversion formula: (unit: ℃)

    Humidity conversion formula: (unit:% RH)

    Application Schematic Diagram

연관제품