{"product_id":"dht22-temperaturehumidity-sensor-with-resistor","title":"DHT22 Temperature\/Humidity Sensor with Resistor","description":"\u003cp\u003eThe DHT22 is a basic, low-cost digital temperature and humidity sensor. Due to its low cost and ease of use, you'll find project examples all over the web for these simple sensors.\u003c\/p\u003e\n\u003cp\u003eCompared to the DHT11, this sensor is more precise, more accurate and works in a bigger range of temperature\/humidity, at the cost of size and a slightly higher cost.\u003c\/p\u003e\n\u003cp\u003eThe DHT22 uses a capacitive humidity sensor and thermistor to measure the surrounding air, then provides that data via a digital output signal on the data pin. They're easy to use, however, they require some careful timing to grab data.\u003c\/p\u003e\n\u003cp\u003eYou can only read data every 2 seconds, so when using something like the Adafruit library below, sensor readings can be up to 2 seconds old (not really a big deal for most projects).\u003cbr\u003e\u003cbr\u003eJust connect the first pin on the left to 3-5V power, the second pin to your data input pin and the rightmost pin to GND. If you want multiple sensors, each one must have its own data pin (this isn't OneWire folks!).\u003c\/p\u003e\n\u003cp\u003eWe have an Adafruit have a great guide with Arduino \u0026amp; CircuitPython code examples!\u003cbr\u003e\u003cbr\u003eComes with a 4.7K-10K resistor, for use as a pullup from the data pin to VCC.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv id=\"technical-details\" class=\"panel-collapse collapse in-md in-lg\"\u003e\n\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\n\u003cul\u003e\n\u003cli\u003e3-5V power and I\/O\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e2.5mA max current use during conversion (while requesting data)\u003c\/li\u003e\n\u003cli\u003e0-100% humidity readings with 2-5% accuracy\u003c\/li\u003e\n\u003cli\u003e-40 to 80°C temperature readings ±0.5°C accuracy\u003c\/li\u003e\n\u003cli\u003eNo more than 0.5 Hz sampling rate (once every 2 seconds)\u003c\/li\u003e\n\u003cli\u003eBody size 27mm x 59mm x 13.5mm\u003c\/li\u003e\n\u003cli\u003e2.54mm\/0.1\" pins (breadboard compatible)\u003c\/li\u003e\n\u003cli\u003eWeight: 2.4g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul id=\"product-files\"\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"The Pi Hut","offers":[{"title":"Default Title","offer_id":52217284624672,"sku":"zmt1787257503821","price":5.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/3231\/3120\/files\/dht22-temperaturehumidity-sensor-with-resistor_1.jpg?v=1787257508","url":"https:\/\/www.elmwoodbasket.shop\/products\/dht22-temperaturehumidity-sensor-with-resistor","provider":"My Store","version":"1.0","type":"link"}