BME680 digital 4in1 environmental sensor What it is and what it does The BME680 is a digital 4in1 sensor that provides humidity, pressure, temperature, and gasbased air quality measurements using proven sensing principles. Key benefits Integrated sensing in a single compact package reduces BOM and saves board space. Digital outputs simplify integration with hosts and microcontrollers. Onboard voltage regulator and levelshifting support easy operation across common voltage levels. Flexible interface options enable straightforward expansion and compatibility with various systems. Interfaces and compatibility Supports I2C and SPI interfaces; SPI interface is reserved for expansion. Onboard voltage regulator and level signal conversion for direct compatibility with 3.3V and 5V systems. Designed for good compatibility with a broad range of host platforms. Typical applications Indoor air quality monitoring, home automation and control, and Internet of Things (IoT) deployments. Weather forecast sensing and environmental monitoring. GPS enhancement (timetofirstfix improvement, dead reckoning, slope detection). Indoor navigation (change of floor detection, elevator detection). Outdoor navigation, leisure, and sports applications. Vertical velocity indication (rise/sink speed). Use scenarios Smart home or building HVAC and air quality monitoring connected to an IoT gateway. Indoor navigation systems in large facilities that require floorchange or elevator detection. Outdoor or sport devices where environmental data contributes to navigation or performance metrics. Form factor and performance attributes Compact package suitable for spaceconstrained embedded designs. Robust environmental sensing with digital outputs for reliable integration.