{"product_id":"si7021-industrial-high-precision-humidity-sensor-i2c-interface","title":"Si7021 Industrial High Precision Humidity Sensor I2C Interface","description":"\u003cdiv class=\"product_info\"\u003e\n\u003ch2 class=\"sing--sub-heading\"\u003e\u003cspan style=\"font-size: 18.72px;\"\u003eMAX471 Voltage Current Sensor\u003c\/span\u003e\u003c\/h2\u003e\nThe main chip is GY-213V-HDC1080(Can use SHT21 HTU21D SI7021 chip to make the same sensor)\u003cbr\u003e\u003cbr\u003eThis I2C digital humidity sensor is a fairly accurate and intelligent alternative to the much simpler Humidity and Temperature Sensor – SHT15 Breakout It has a typical accuracy of ±4% with an operating range that’s optimized from 10% to 80% RH. Operation outside this range is still possible – just the accuracy might drop a bit. The temperature output has a typical accuracy of ±0.2°C from -20~85°C.\u003cbr\u003e\u003cbr\u003eThe HDC1080 sensor chip has 2 address-select pins, so you can have up to 4 shared on a single I2C bus. It’s also 3-5V power and logic safe so you don’t need any level shifters or regulators to use with a 5V or 3V microcontroller.\u003cbr\u003e\u003cbr\u003ePlease note: TI has indicated that there’s a ‘settling’ effect for the humidity and that you will need to re-hydrate the sensor once you receive it. To rehydrate it, place it in a location with 85% humidity for 24 hours or 60% humidity for 10 days.\u003cbr\u003e\u003cbr\u003eThe HDC1080 is a digital humidity sensor with an integrated temperature sensor that provides excellent measurement accuracy at very low power. The HDC1080 operates over a wide supply range and is a low-cost, low-power alternative to competitive solutions in a wide range of common applications. The humidity and temperature sensors are factory calibrated.\n\u003cdiv\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eTechnical Details\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003ePrecision Relative Humidity Sensor : ± 3% RH (max), 0–80% RH\u003c\/li\u003e\n\u003cli\u003eHigh Accuracy Temperature Sensor : ±0.4 °C (max), –10 to 85 °C\u003c\/li\u003e\n\u003cli\u003e0 to 100% RH operating range\u003c\/li\u003e\n\u003cli\u003eUp to –40 to +125 °C operating range\u003c\/li\u003e\n\u003cli\u003eWide operating voltage (1.9 to 3.6 V)\u003c\/li\u003e\n\u003cli\u003eLow Power Consumption 150 μA active current\u003c\/li\u003e\n\u003cli\u003eFactory-calibrated\u003c\/li\u003e\n\u003cli\u003eI2C Interface\u003c\/li\u003e\n\u003cli\u003eIntegrated on-chip heater\u003c\/li\u003e\n\u003cli\u003e3x3 mm DFN Package\u003c\/li\u003e\n\u003cli\u003eExcellent long term stability\u003c\/li\u003e\n\u003cli\u003eOptional factory-installed cover\u003c\/li\u003e\n\u003cli\u003eLow-profile\u003c\/li\u003e\n\u003cli\u003eProtection during reflow\u003c\/li\u003e\n\u003cli\u003eExcludes liquids and particulates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eFeatures\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eRelative Humidity Accuracy ±2% (typical)\u003c\/li\u003e\n\u003cli\u003eTemperature Accuracy ±0.2°C (typical)\u003c\/li\u003e\n\u003cli\u003eExcellent Stability at High Humidity\u003c\/li\u003e\n\u003cli\u003e14 Bit Measurement Resolution\u003c\/li\u003e\n\u003cli\u003e100 nA Sleep Mode Current\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePower Pins\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eVin – this is the power pin. Unlike many sensors, this chip can be powered by 3-5 VDC, so there is no voltage regulator on board. Simply power the board with the same power as the logic level of your microcontroller – e.g. for a 5V micro like Arduino, use 5V. For a 3V ARM processor, use 3V\u003c\/li\u003e\n\u003cli\u003eGND – common ground for power and logic\u003c\/li\u003e\n\u003cli\u003eI2C Logic pins:\u003c\/li\u003e\n\u003cli\u003eSCL – I2C clock pin, connect to your microcontrollers I2C clock line. 3-5V logic OK\u003c\/li\u003e\n\u003cli\u003eSDA – I2C data pin, connect to your microcontrollers I2C data line. 3-5V logic OK\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eOptional Pins\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eThese are pins you don’t need to connect to unless you want to!\u003c\/li\u003e\n\u003cli\u003eRDY – This is the interrupt\/’ready’ pin from the HDC100x. The chip has some capability to ‘alert’ you when data is ready to be read from the sensor. We don’t use this pin in our library but it’s available if you need it! It is an open collector so you need to use a pull-up resistor if you want to read the signal from this pin.\u003c\/li\u003e\n\u003cli\u003eA0 A1 – These are the address select pins. Since you can only have one device with a given address on an i2c bus, there must be a way to adjust the address if you want to put more than one HDC100X on a shared i2c bus. The A0\/A1 pins set the bottom 2 bits of the i2c address. There are pull-down resistors on the board so connect them to Vin to set the bits to ‘1’. They are read on power-up, so de-power and re-power to reset the address.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eIntegration with Arduino\u003c\/h3\u003e\n\u003cdiv id=\"p_info\" style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/SI7021-Sensor-Circuit.jpg?v=1645871240\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eSample Code\u003c\/h3\u003e\n\u003cscript src=\"https:\/\/gist.github.com\/labsguru\/63e2142c7bd2e1f26c384357a97adea0.js\"\u003e\u003c\/script\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eIntegration with Raspberry Pi\u003c\/h3\u003e\n\u003cdiv id=\"p_info\" style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/pi-and-si7021_bb.jpg?v=1645871539\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eSample Code\u003c\/h3\u003e\n\u003cscript src=\"https:\/\/gist.github.com\/labsguru\/c29a50c48e3a7a252535cc0c5d349303.js\"\u003e\u003c\/script\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePhysical Attributes\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eL x W x H (mm): 15.5 x 15.5 x 2\u003c\/li\u003e\n\u003cli\u003eWeight (gm) : 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePackage Includes\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds ls-n\"\u003e\n\u003cli\u003e1 x Si7021 Industrial High Precision Humidity Sensor I2C Interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KitsGuru","offers":[{"title":"Default Title","offer_id":40708938793141,"sku":"KG557","price":449.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/products\/si7021-industrial-high-precision-humidity-sensor-i2c-interface-2.jpg?v=1739445303","url":"https:\/\/kitsguru.com\/fr\/products\/si7021-industrial-high-precision-humidity-sensor-i2c-interface","provider":"KitsGuru","version":"1.0","type":"link"}