The Si7021 is a low-cost, easy-to-use, highly accurate, digital humidity and temperature sensor. This sensor is ideal for environmental sensing and data logging and perfect for build a weather stations or humidor control system. All you need are two lines for I2C communication, and you’ll have relative humidity readings and very accurate temperature readings as a bonus! There are only four pins that need to be hooked up in order to start using this sensor in a project. One for VCC, one for GND, and two data lines for I2C communication. This breakout board has built-in 4.7KΩ pullup resistors for I2C communications. If you’re hooking up multiple I2C devices on the same bus, you may want to disable these resistors. Dimensions: 0.6" x 0.6" Documents: * Schematic * Eagle Files * Datasheet (Si7021) * Hookup Guide * GitHub (Design Files & Example Code) * GitHub (Library) https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2016-05-07 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2016-11-24 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2016-11-25 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2016-11-28 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2016-11-29 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2016-12-09 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2016-12-13 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2017-03-31 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2017-04-06 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2017-11-10 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2017-11-13 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2017-11-24 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2017-11-28 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2018-05-05 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2018-05-11 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2018-05-15 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2018-10-30 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2018-11-21 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2018-11-27 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2018-12-05 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2018-12-06 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2019-03-15 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2019-03-19 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2019-07-04 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2019-07-09 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2019-11-29 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2019-12-03 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2021-06-15 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2022-02-21 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2023-04-14 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2023-04-21 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2024-02-15 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2025-01-19 https://elecena.pl/product/6055519/sparkfun-humidity-and-temperature-sensor-breakout-si7021 2025-02-22