{"product_id":"adafruit-hts221-temperature-humidity-sensor-breakout-board-stemma-qt-qwiic","title":"Adafruit HTS221 - Temperature \u0026 Humidity Sensor Breakout Board (STEMMA QT \/ Qwiic)","description":"\u003cp\u003eHumidity is the concentration of water vapor (water when it's a gas) in the air. Some places have more and make you feel soggy and hot like you're in a sauna. Other places don't have much, which makes it easier to get nose bleeds and static zaps. These are just a few examples of how humidity can have a noticeable impact on things that grow, like mushrooms or humans, as well as things that are sensitive to moisture, like delicate electronics, or humans.\u003c\/p\u003e\u003cp\u003eThis is where the \u003cstrong\u003eHTS221 Temperature and Humidity Sensor\u003c\/strong\u003e by ST comes in. With an HTS221, you can take measurements of the relative humidity which will tell you if the environment you're measuring is bone dry or sopping wet. The HTS221 can measure relative humidity from \u003cstrong\u003e0%-100% rH \u003c\/strong\u003ewith a sensitivity of 0.004% and 3.5% accuracy between 20-80%. It can also measure temperature from \u003cstrong\u003e-40 to 120\u003c\/strong\u003e degrees C, with a resolution of 0.016°C with ±0.5 °C accuracy between 15 and +40 °C.\u003c\/p\u003e\u003cp\u003eThe HTS221 is an inexpensive humidity sensor which makes it great for everyday measurement applications. Want to measure the humidity of your bathroom? Sure! How about your mushroom farm? Perfect!\u003c\/p\u003e\u003cp\u003eThe HTS221 lets you choose between a \u003cstrong\u003e3-wire SPI \u003c\/strong\u003eor the ever-popular \u003cstrong\u003eI2C\u003c\/strong\u003e which only needs two wires for data. If you're an I2C fan (who isn't?), we've included our handy dandy SparkFun Qwiic compatible \u003cstrong\u003eSTEMMA QT\u003c\/strong\u003e connectors for the I2C bus \u003cstrong\u003eso you don't even need to solder! \u003c\/strong\u003e\u003cstrong\u003eQT Cable is not included\u003c\/strong\u003e, but we have a variety in the shop. \u003c\/p\u003e\u003cp\u003eSince the HTS221 is a super small 2mm square, we've put it on a breakout board with level shifting and a power regulator, so it's easy to use on a breadboard with either a \u003cstrong\u003e5V logic level\u003c\/strong\u003e device like a Metro 328 or Arduino Uno, or with \u003cstrong\u003e3.3V logic level\u003c\/strong\u003e devices like a Feather M4 or Raspberry Pi of your choice.\u003c\/p\u003e\u003cp\u003eLastly, it wouldn't be an Adafruit breakout if it didn't come with \u003cstrong\u003elibraries for Arduino and CircuitPython or Python\u003c\/strong\u003e. We've also written \u003cstrong\u003eexample code\u003c\/strong\u003e and instructions on the pages that follow, so you'll be ready to tell all your friends the approximate relative humidity level and temperature in only a few minutes.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\u003cul\u003e\n\u003cli\u003eCapacitive digital sensor for relative humidity and temperature\u003c\/li\u003e\n\u003cli\u003e0to 100% relative humidity range\u003c\/li\u003e\n\u003cli\u003e3 - 5 VDC power and logic\u003c\/li\u003e\n\u003cli\u003eSelectable ODR from 1 Hz to 12.5 Hz\u003c\/li\u003e\n\u003cli\u003eHigh rH sensitivity: 0.004% rH\/LSB\u003c\/li\u003e\n\u003cli\u003eHumidity accuracy: ± 3.5% rH, 20 to +80% rH\u003c\/li\u003e\n\u003cli\u003eTemperature accuracy: ± 0.5°C,15 to +40 °C\u003c\/li\u003e\n\u003cli\u003eEmbedded 16-bit ADC with16-bit humidity and temperature output data\u003c\/li\u003e\n\u003cli\u003eSPI and I²C interfaces, I2C address 0x5F\u003c\/li\u003e\n\u003cli\u003eST Factory calibrated\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e \u003c\/div\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":51616996852018,"sku":"nnv1787258108814","price":6.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/0289\/8482\/files\/adafruit-hts221---temperature-humidity-sensor-breakout-board-stemma-qt-qwiic_1.jpg?v=1787258113","url":"https:\/\/www.mapleborough.shop\/products\/adafruit-hts221-temperature-humidity-sensor-breakout-board-stemma-qt-qwiic","provider":"My Store","version":"1.0","type":"link"}