BME680 humidity pressure temperature

Description : The BME680 gives you all the environmental detection you want in a small package. This small sensor contains capabilities for detecting temperature, humidity, barometric pressure and VOC gas. Everywhere on SPI or I2C at a great price! Like the BME280 and BMP280, this precision sensor from Bosch can measure humidity with an accuracy of ± 3%, barometric pressure with an absolute accuracy of ± 1 hPa and temperature with an accuracy of ± 1.0 ° C. Because the pressure changes with altitude and the pressure measurements are so good, you can also use it as an altimeter with an accuracy of ± 1 meter or more! The BME680 takes these sensors to the next step in that it contains a small MOX sensor. Heated metal oxide changes strength based on volatile organic compounds (VOCs) in the air, so it can be used to detect gases and alcohols such as ethanol, alcohol and carbon monoxide, and perform air quality measurements. Note that it will give you a resistance value, with an overall VOC content, but it cannot differentiate between gases or alcohols. Please note that this sensor, like all VOC/gas sensors, has variability and to get accurate measurements, you'll want to calibrate it against known sources! That said, for general environmental sensors, this will give you a good idea of trends and comparisons. This escape includes a 3.3V regulator and some level shift, so it can be easily used with your 3.3V or 5V microcontroller.