SparkFun Humidity and Temperature Sensor Breakout - Si7021

The SparkFun Si7021 Humidity and Temperature Sensor Breakout is a compact, low-cost, digital sensor that delivers highly accurate readings. It's perfect for environmental sensing, data logging, building weather stations, or controlling humidors. The sensor communicates via I2C, providing relative humidity readings and precise temperature measurements. The sensor's functionality is achieved through just four pins: VCC, GND, and two data lines for I2C communication. The breakout board is equipped with built-in 4.7KΩ pullup resistors for I2C communications, which can be disabled if multiple I2C devices are being used on the same bus. This makes it a flexible component for various projects.Measuring only 15.24mm x 15.24mm, the SparkFun Si7021 sensor is compact and easy to integrate into your projects. Its small size doesn't compromise its performance, making it a reliable choice for your sensing needs.For your convenience, SparkFun provides a range of supporting documents. These include a schematic, Eagle files, a datasheet for the Si7021-A20, a hookup guide, and GitHub links for both design files and the library. These resources make it easier to get started and make the most of the sensor's capabilities.