{"product_id":"sparkfun-co-atilde-cent-acirc-acirc-sensor-stc31-qwiic","title":"SparkFun CO\u0026Atilde;\u0026cent;\u0026acirc;��\u0026acirc;�� Sensor - STC31 (Qwiic)","description":"\u003cp\u003eDo you need to be able to sense CO\u003csub\u003e2\u003c\/sub\u003e concentrations of up to 100%? If so, the STC31 is the sensor for you! The Sensirion STC31 thermal conductivity sensor has two CO\u003csub\u003e2\u003c\/sub\u003e measurement ranges: 0 to 25 vol%; and 0 to 100 vol%. The measurement repeatability is 0.2 vol%, with a stability of 0.025 vol% \/ �°C. The measurement accuracy depends on the measurement range: 0.5 vol% + 3% measured value; 1 vol% + 3% measured value.\u003c\/p\u003e \u003cp\u003eOur breakout includes a separate SHTC3 humidity and temperature sensor; allowing the STC31 to deliver humidity-compensated measurements together with improved temperature compensation. The STC31 can compensate for atmospheric pressure too - which is handy if, like us, youâ��re up in the mountains!\u003c\/p\u003e \u003cp\u003eThe STC3x sensor family is Sensirionâ��s series of Gas Concentration sensors designed for high-volume applications. The STC3x utilizes a revolutionized thermal conductivity measurement principle, which results in superior repeatability and long-term stability. This makes the STC31 a perfect choice for applications where reliability is key.\u003c\/p\u003e \u003cp\u003eThe outstanding performance of these sensors is based on Sensirionâ��s patented CMOSens�® sensor technology, which combines the sensor element, signal processing and digital calibration on a small CMOS chip. The well-proven CMOS technology is perfectly suited for high-quality mass production and is the ideal choice for demanding and cost-sensitive OEM applications.\u003c\/p\u003e \u003cp\u003eThe STC31â��s I\u003csup\u003e2\u003c\/sup\u003eC address can be configured using the split-pad jumpers on the back of the board. The SHTC3â��s I\u003csup\u003e2\u003c\/sup\u003eC address is non-configurable; you will need a \u003ca href=\"https:\/\/www.sparkfun.com\/products\/16784\"\u003eQwiic Mux\u003c\/a\u003e if you want to connect multiple sensors to the same bus.\u003c\/p\u003e \u003cp\u003eAs usual, our board includes a power LED, a pair of Qwiic connectors, I\u003csup\u003e2\u003c\/sup\u003eC breakout pads and pull-up resistors. You can disable the LED and pull-ups if you need to by cutting the I2C jumpers on the back of the board.\u003c\/p\u003e \u003cp\u003eOur \u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_STC3x_Arduino_Library\"\u003eArduino library\u003c\/a\u003e contains example sketches for the Arduino IDE to get you up and running quickly. It can be downloaded through the Arduino Library manager: search for 'SparkFun STC3x' or it can be found in the Documents tab above.\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cem\u003eThe \u003ca href=\"https:\/\/www.sparkfun.com\/qwiic\"\u003eSparkFun Qwiic Connect System\u003c\/a\u003e is an ecosystem of I\u003csup\u003e2\u003c\/sup\u003eC sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you canâ��t hook it up wrong.\u003c\/em\u003e\u003c\/p\u003e \u003chr\u003e \u003cdiv class=\"alert alert-warning\"\u003e\n\u003cb\u003eExperimental Product:\u003c\/b\u003e \u003ca href=\"https:\/\/www.sparkfun.com\/sparkx\"\u003eSparkX\u003c\/a\u003e products are rapidly produced to bring you the most cutting edge technology as it becomes available. These products are tested but come with no guarantees. Live technical support is not available for SparkX products. Head on over to our \u003ca href=\"https:\/\/forum.sparkfun.com\/viewforum.php?f=123\"\u003eforum\u003c\/a\u003e for support or to ask a question.\u003c\/div\u003e \u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eSensirion STC31 CO\u003csub\u003e2\u003c\/sub\u003e Sensor \u003cul\u003e \u003cli\u003eThermal conductivity sensor provides calibrated gas concentration and temperature output\u003c\/li\u003e \u003cli\u003eCalibrated for: CO\u003csub\u003e2\u003c\/sub\u003e in N\u003csub\u003e2\u003c\/sub\u003e; and CO\u003csub\u003e2\u003c\/sub\u003e in air\u003c\/li\u003e \u003cli\u003eMeasurement ranges: 0 to 25 vol%; 0 to 100 vol%\u003c\/li\u003e \u003cli\u003eAccuracy: 0.5 vol% + 3% measured value; 1 vol% + 3% measured value\u003c\/li\u003e \u003cli\u003eRepeatability: 0.2 vol%\u003c\/li\u003e \u003cli\u003eTemperature measurement range: -20 �°C to +85 �°C\u003c\/li\u003e \u003cli\u003eConcentration and temperature resolution: 16-bit\u003c\/li\u003e \u003cli\u003eStart-up time: 14 ms\u003c\/li\u003e \u003cli\u003eI\u003csup\u003e2\u003c\/sup\u003eC address (configurable): 0x29 (default), 0x2A, 0x2B, 0x2C\u003c\/li\u003e \u003cli\u003eSupply Voltage: 2.7V\u003csub\u003eMin\u003c\/sub\u003e, 3.3V\u003csub\u003eTyp\u003c\/sub\u003e, 5.5V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Qwiic bus operates at 3.3V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \u003c\/ul\u003e\n\u003c\/li\u003e \u003cli\u003eSensirion SHTC3 Humidity and Temperature Sensor \u003cul\u003e \u003cli\u003eAllows the STC31 to compensate for humidity and temperature\u003c\/li\u003e \u003cli\u003eTypical accuracy: �±2 %RH and �±0.2 �°C\u003c\/li\u003e \u003cli\u003eSpecified humidity range (extended): 0 to 100 %RH\u003c\/li\u003e \u003cli\u003eSpecified temperature range: -40 �°C to +125 �°C\u003c\/li\u003e \u003cli\u003eI\u003csup\u003e2\u003c\/sup\u003eC address (non-configurable): 0x70\u003c\/li\u003e \u003cli\u003eSupply Voltage: 1.62V\u003csub\u003eMin\u003c\/sub\u003e, 3.3V\u003csub\u003eTyp\u003c\/sub\u003e, 3.6V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Qwiic bus operates at 3.3V\u003csub\u003eMax\u003c\/sub\u003e\n\u003c\/li\u003e \u003c\/ul\u003e\n\u003c\/li\u003e \u003cli\u003eDual Qwiic connectors\u003c\/li\u003e \u003cli\u003ePower LED (configurable)\u003c\/li\u003e \u003cli\u003eI\u003csup\u003e2\u003c\/sup\u003eC pull-ups (configurable)\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eDocuments:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/6\/2\/4\/0\/0\/Sensirion_Thermal_Conductivity_Datasheet_STC31_D1.pdf\"\u003eSTC31 Datasheet\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/4\/5\/3\/1\/a\/Sensirion_TC_AN_STCxx_FieldCalibration_D1.pdf\"\u003eSTC Field Calibration Guide\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/4\/b\/a\/8\/1\/Sensirion_TC_AN_STCxx_Design-In_Guide_D1.pdf\"\u003eSTC Design-In Guide\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/5\/e\/4\/e\/9\/Qwiic-CO2_Sensor-STC31_Schematic.pdf\"\u003eSchematic\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/0\/3\/2\/e\/9\/Qwiic-CO2_Sensor-STC31_Eagle_Files.zip\"\u003eEagle Files\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_STC3x_Arduino_Library\"\u003eArduino Library\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfunX\/Qwiic_CO2_Sensor-STC31\"\u003eHardware Repo\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e","brand":"sparkfun-10","offers":[{"title":"Default Title","offer_id":40054700998741,"sku":"18385:SPX-18385:spark","price":13995.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1034\/1611\/products\/18385-STC31_Breakout-01.jpg?v=1651343979","url":"https:\/\/www.tanotis.com\/products\/sparkfun-co-atilde-cent-acirc-acirc-sensor-stc31-qwiic","provider":"Tanotis","version":"1.0","type":"link"}