{"title":"Adafruit BMP390 - Precision Barometric Pressure and Altimeter","handle":"adafruit-bmp390-precision-barometric-pressure-and-altimeter","url":"/products/adafruit-bmp390-precision-barometric-pressure-and-altimeter","description":"The BMP390 from Bosch (also known as BMP390L) is a high-precision barometric pressure and temperature sensor, offering the best altitude accuracy in the Bosch pressure sensor lineup. With relative accuracy of ±3 Pascals (±0.25 metres of altitude) and noise as low as 0.1 metres, it is ideal for drone altitude hold, precision altimeters, and environmental monitoring.\n\nSupporting both I2C and SPI interfaces, the BMP390 provides flexible connectivity. Use I2C for simple wiring with STEMMA QT / Qwiic plug-and-play connectors, or SPI to connect multiple sensors without address collisions. The breakout board includes a 3.3V regulator and level shifting for use with both 3V and 5V microcontrollers.\n\nKey Features\n\n\nBarometric Pressure – ±3 Pascal relative accuracy\n\nAltitude Precision – ±0.25 metre accuracy with 0.1 m noise floor\n\nTemperature – ±0.5°C accuracy\n\nDual Interface – I2C and SPI communication\n\nSTEMMA QT / Qwiic – Plug-and-play I2C connectors on both sides for daisy-chaining\n\nVoltage Range – 3–5V operation via onboard regulator and level shifting\n\n\nAlso Available\n\n\nAdafruit BMP585 – Ported version with tube attachment for differential measurements\n\nAdafruit BMP388 – Previous generation (±0.5 m altitude accuracy)\n\nAdafruit BMP280 – Budget option (±1 m altitude accuracy)\n\nAdafruit BME280 – Adds humidity sensing to pressure and temperature\n\n\nIdeal For\n\nDrone and quadcopter altitude hold\nWearable altimeters and fitness devices\nHigh-precision weather stations\nHeight-above-sea-level tracking applications\n\n\n\nNote: For absolute altitude readings, you will need to enter the current barometric pressure at sea level. This is true of all pressure-based altimeters, as readings shift with weather changes.\n\n\nPackage Contents\n\n1× Adafruit BMP390 precision barometric pressure sensor breakout\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":2989,"title":"Default Title","sku":"AF-4816","price":23.21,"compare_at_price":0.0,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}