{"product_id":"adafruit-hdc3021-precision-temperature-humidity-sensor-stemma-qt-qwiic","title":"Adafruit HDC3022 Precision Temperature \u0026 Humidity Sensor - STEMMA QT \/ Qwiic","description":"\u003cp\u003eWe stock a large number of Temperature\/Humidity sensors, so you're probably wondering why another one? Well, this Adafruit \u003cspan\u003eHDC3022 \u003c\/span\u003ePrecision Temperature \u0026amp; Humidity Sensor breakout features the highest accuracy \u0026amp; precision we've seen so far! It has the \u003ca href=\"https:\/\/www.ti.com\/product\/HDC3020\"\u003eTI HDC302x series chip\u003c\/a\u003e with typical 0.5% accuracy for the RH sensor (with 0.19% long-term drift) and ±0.1°C typical accuracy for the temperature sensor. All at a very nice price.\u003c\/p\u003e\n\u003cp\u003eThis sensor has a true I2C interface for easy interfacing with only two wires (plus power and ground!). That makes it preferable to the janky DHT11\/DHT22 sensors. The sensor is 5V safe, so you can use 1.8V to 5V power and logic levels without the need for shifters, so you can power and communicate with it using any microcontroller or microcomputer. With 4 selectable I2C addresses, you can have multiple sensors on one bus - unlike many other fixed-address T\/RH sensors.\u003c\/p\u003e\n\u003cp\u003eWe've written a \u003ca href=\"https:\/\/github.com\/adafruit\/Adafruit_HDC302x\"\u003efull-featured Arduino\u003c\/a\u003e and \u003ca href=\"https:\/\/github.com\/adafruit\/Adafruit_CircuitPython_HDC302x\"\u003eCircuitPython\/Python library\u003c\/a\u003e, so whether you have an 8-bit microcontroller or a quad-core \u003ca href=\"\/nl\/collections\/raspberry-pi-store\"\u003eRaspberry Pi\u003c\/a\u003e, you will be able to quickly get data from the sensor for your environmental monitoring needs. The library can set up the sensor rate\/power, heater, alerts, offsets, and read data or NIST tracking ID.\u003c\/p\u003e\n\u003cp\u003eSuch a lovely chip - so we spun up a breakout board with the \u003cspan\u003eHDC3022\u003c\/span\u003e and some supporting circuitry such as pullup resistors and capacitors. To make things even easier, we've included SparkFun Qwiic compatible STEMMA QT connectors for the I2C bus so you don't even need to solder! \u003ca href=\"\/nl\/search?q=qwiic+cable\u0026amp;narrow_by=\u0026amp;sort_by=relevency\u0026amp;page=1\"\u003eQT Cable is \u003cstrong\u003eNOT\u003c\/strong\u003e included, but we have a variety in the shop\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you prefer working on a \u003ca href=\"\/nl\/collections\/solderless-breadboards\"\u003ebreadboard\u003c\/a\u003e, each order comes with one fully assembled and tested PCB breakout and a small piece of header. You'll need to solder the header onto the PCB, but it's fairly easy and takes only a few minutes even for a beginner.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note: this sensor comes with a protective polyamide sticker on top, please remove it before usage!\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRevision History\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs of October 31st, 2024 – \u003c\/strong\u003eWe've upgraded this sensor to now be the \"HDC3022\" rather than the \"HDC3021\". It is completely the same other than it now has a white PTFE filter cover that should not be removed and will keep your sensor nice and clean\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/SZ7YZGdb_ZY?si=QWoL1WPANMqSOk-q\u0026amp;start=361\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHDC302x specifications:\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRelative humidity (RH) sensor:\u003cbr\u003e– Operating range: 0% to 100%\u003cbr\u003e– Accuracy: ±0.5% typical\u003cbr\u003e– Offset Error Correction: reduces offset to return the device to within accuracy specification\u003cbr\u003e– Long-term drift: 0.19%RH\/yr\u003cbr\u003e– Condensation protection with integrated heater\u003c\/li\u003e\n\u003cli\u003e Temperature sensor:\u003cbr\u003e– Operating range: –40°C to 125°C\u003cbr\u003e– Accuracy: ±0.1°C typical\u003c\/li\u003e\n\u003cli\u003eNIST traceability: relative humidity \u0026amp; temperature\u003c\/li\u003e\n\u003cli\u003eLow power: average current 0.4 µA (sensor only, not including on-board green LED which can be disabled)\u003c\/li\u003e\n\u003cli\u003eI2C interface compatibility up to 1-MHz speeds\u003cbr\u003e– Four selectable I2C addresses\u003cbr\u003e– Data protection through CRC checksum\u003c\/li\u003e\n\u003cli\u003eSupply voltage: 1.62 V to 5.50 V\u003c\/li\u003e\n\u003cli\u003eAvailable auto measurement mode\u003c\/li\u003e\n\u003cli\u003eProgrammable interrupts\u003c\/li\u003e\n\u003cli\u003eProgrammable RH and Temp measurement offset\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions: 25.4mm x 17.7mm x 4.7mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWeight: 1.6g\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":50847292817681,"sku":"ADA5989","price":8.6,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/adafruit-hdc3022-precision-temperature-humidity-sensor-stemma-qt-qwiic-adafruit-ada5989-71829358707073.jpg?v=1735210243","url":"https:\/\/abcd3032.myshopify.com\/nl\/products\/adafruit-hdc3021-precision-temperature-humidity-sensor-stemma-qt-qwiic","provider":"Tayyab Zak","version":"1.0","type":"link"}