ENS160 MOX Gas Sensor – STEMMA QT / Qwiic

*sniff* *sniff* … do you smell that? No need to stick your nose into a carton of milk anymore, you can build a digital nose with the ENS160Gas Sensor, a fully integrated MOX gas sensor. This is a very fine air quality sensor from the sensor experts atScioSense, with I2C interfacing so you don’t have to manage the heater and analog reading of a MOX sensor. It combines multiple metal-oxide sensing and heating elements on one chip to provide more detailed air quality signals.The ENS160 has a ‘standard’ hot-plate MOX sensor, as well as a small microcontroller that controls power to the plate, reads the analog voltage, and provides an I2C interface to read from.ScioSense provides anArduino library with examples of reading the fourraw resistance values and also the TVOC and eCO2anda Python/CircuitPython librarythat can be used with Linux computers like the Raspberry Pi or our CircuitPython boards.Please note, this sensor, like all VOC/gas sensors, has variability, and to get precise measurements you will want to calibrate it against known sources!That said, for general environmental sensors, it will give you a good idea of trends and comparison.Another nice element to this sensor isthe ability to set temperature and humidity compensation for better accuracy.An external humidity sensor is required and then the RH% is written over I2C to the sensor, so it can better calibrate the MOX sensor reading and reduce humidity/temperature-based variations.Nice sensor right? So we made it easy for you to get right into your next project. The surface-mount sensor is soldered onto a custom-made PCB in theSTEMMA QTform factor, making them easy to interface with. TheSTEMMA QT connectorson either side are compatible with theSparkFun QwiicI2C connectors. This allows you to make solderless connections between your development board and the ENS160 or to chain it with a wide range of other sensors and accessories using acompatible cable.QT Cable is not included, but we have a variety in the shopWeve of course broken out all the pins to standard headers and added a 3.3V voltage regulator and level shifting to allow you to use it with either 3.3V or 5V microcontrollers.Technical DetailsENS160 Features:Detection of reducing (VOCs) and oxidizing gasesSupport for up to 4 independent MOX gas sensorsIntegrated sensor measurement and heater drive controlIntegrated pre-calibrated sensor fusion and Automatic Baseline Correction algorithmsMultiple IAQ outputs (TVOC, eCO2, AQI)I2C and SPI interfaces, however please note the libraries do not support SPI interface.<3 minutes warm-up<1 hour start-upHigh immunity to humidity and ozoneI2C address 0x53 cannot be changedProduct Dimensions: 25.4mm x 17.6mm x 4.5mm / 1.0" x 0.7" x 0.2"Product Weight: 1.8g / 0.1oz