Waveshare BMP390 High Precision Barometric Pressure Sensor

Barometric altitude estimation is only as good as the pressure sensor underneath it, and the BMP390 is built specifically for the precision end of that range, which matters directly for any altitude-hold or altitude-logging application where a noisy or drifting pressure reading translates straight into unstable height estimates. Beyond raw pressure, it derives altitude and temperature from the same measurement, giving a project three useful readings from one sensor rather than needing separate modules for each. A solid upgrade pick for any build where barometric accuracy genuinely affects performance, rather than a project that just needs a rough pressure trend.