Library for HTU21D, Si7021, SHT21 Digital Humidity & Temperature Sensor

The most advanced library for the most accurate and cheap humidity & temperature sensor for Arduino. I do not understand why people use inaccurate DHT11, DHT21 and DHT22.

Library supports all sensors features:

  • read humidity for SHT21, HTU21D or compensated humidity for Si70xx
  • calculate compensated humidity for SHT21, HTU21D
  • read temperature for SHT21, HTU21D, Si70xx or retrieve temperature value after RH measurement for Si70xx
  • soft reset
  • check battery status
  • turn ON/OFF build-in Heater
  • read FW version
  • read sensor ID

Tested on:

  • Arduino AVR
  • Arduino ESP8266
  • Arduino STM32

Downlod link - GitHub - enjoyneering/HTU21D: This is an Arduino library for HTU21D, Si7021 and SHT21 Digital Humi