Adafruit BMP585 Ported I2C / SPI Temperature and Pressure Sensor - STEMMA QT is a precision Bosch barometric pressure and temperature breakout designed for environmental sensing, altitude tracking, and projects that benefit from a ported pressure connection. According to the official Adafruit product page, the BMP585 improves on earlier Bosch BMP2xx and BMP3xx devices with better precision, low-altitude noise as low as 1cm (0.08Pa), and support for both I2C and SPI interfaces. Adafruit positions this board as the ported sibling to the BMP580/BMP581 family. It is software and firmware compatible with BMP580/BMP581, but adds a tube-ready pressure port for applications where a direct air channel is helpful. The official page also notes ±6 Pa relative accuracy at room temperature, roughly ±50 cm altitude resolution, ±60 Pa typical absolute accuracy, and ±0.5C temperature accuracy. With onboard level shifting, a 3.3V regulator, and dual STEMMA QT connectors, it is easy to integrate into 3V or 5V projects. Features Bosch BMP585 precision pressure and temperature sensor Ported package that can connect to a tube for pressure routing I2C or SPI interface support Low-altitude noise as low as 1cm (0.08Pa) Relative accuracy of ±6 Pa at room temperature Typical absolute accuracy of ±60 Pa Temperature sensing with ±0.5C accuracy Onboard 3.3V regulator and level shifting for 3V or 5V systems Dual STEMMA QT / Qwiic-compatible connectors for solderless I2C wiring Specifications Sensor: Bosch BMP585 Measured values: Barometric pressure and temperature Interface: I2C or SPI Relative pressure accuracy: ±6 Pa at room temperature Typical absolute pressure accuracy: ±60 Pa Low-altitude noise: 1cm (0.08Pa) minimum Temperature accuracy: ±0.5C Board logic / power compatibility: 3.3V to 5V via onboard regulator and level shifting Form factor: STEMMA QT / SparkFun Qwiic compatible Use case: Precision altimeter, environmental sensing, drones, wearables, and pressure-monitoring projects Applications Precision altimeters Environmental pressure and temperature sensing Drones and quadcopters Wearables and height-tracking projects Ported pressure measurement setups Notes Weight is currently entered with a conservative estimate because the official Adafruit product page did not expose a product-weight field in the fetched page source. Resources Adafruit Learn Guide BMP585 Datasheet
