The HTU21D 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 a weather stations or humidor control systems. All you need is two lines for I2C communication and youâ€™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 4.7k pull up resistors for I2C communications. If youâ€™re hooking up multiple I2C devices on the same bus, you may want to disable these resistors.Note: Full drops of water can damage the sensor. We recommend wrapping the board in Teflon/irrigation tape for extreme conditions where water droplets may find their way onto the sensor. Dimensions: 0.6 x 0.6"Documents:SchematicEagle FilesDatasheet (HTU21D)Hookup GuideGitHub (Design Files & Example Code)GitHub (Library)
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