The BME680 is a digital 4in1 sensor for humidity, pressure and temperature measurement based on proven sensing principles. Benefits at a glance Allinone environmental sensing in a single compact device, enabling simpler designs and reduced component counts. Easy integration with 3.3 V and 5 V systems thanks to an onboard voltage regulator and level signal conversion chip. Flexible interface options with a reserved SPI interface for expansion. Suitable for a wide range of applications that rely on accurate ambient conditions. Typical applications Indoor air quality monitoring, home automation and control, and general Internet of Things deployments. Weather forecasting and related environmental sensing needs. GPS enhancement, including timetofirstfix improvement, dead reckoning, and slope detection. Indoor navigation tasks such as change of floor detection and elevator detection. Outdoor navigation, leisure, and sports applications. Vertical velocity indication (rise or sink speed). Interface and compatibility The BME680 environmental sensor adopts an integrated interface approach with an onboard power supply voltage regulator and level signal conversion chip, providing good compatibility with various systems. It can be directly compatible with 3.3 V and 5 V systems. A SPI interface is reserved for expansion.