Peel from the case to the element. Follow the readout through this conceptual model.
Drag to rotate; pinch to zoom. With the view focused: arrow keys rotate, + / − zoom, 1–3 choose a layer, Home resets rotation and zoom. Step advances to the next layer; Reset returns to the case and default view. Layer buttons select a view directly. The page does not move on its own.
The BMP280 has a metal lid. The opening shown here is a teaching example. [BMP280: Key parameters]
Teaching view: The silver lid has a small opening above the sensing parts. This is the pressure sensor’s outer package; its readings can be compared with a local pressure baseline.
The BMP280 has a metal lid. The opening in this teaching model is illustrative. [BMP280: Key parameters]
Teaching view: The silver lid has a small opening above the sensing parts. This is the pressure sensor’s outer package; its readings can be compared with a local pressure baseline.
The BMP280 combines a pressure-sensing element that changes resistance under pressure with a chip that converts its signals into digital readings. [BMP280 §3: Functional description]
Teaching view: A small pressure-sensing chip sits beside a dark readout block on the package base. The readout converts the sensing signal into digital pressure readings.
In this simplified example, pressure bends a thin membrane and strains resistive sensing parts, changing their resistance. The membrane shape and strain marks illustrate the principle rather than the BMP280’s exact construction. [BMP280 §3: Functional description]
A pressure change alone cannot distinguish a height change from weather drift. [Gravity, Brownian Noise, Bandwidth · Pressure and weather drift]
Teaching view: The purple membrane and gold strain marks represent the pressure-sensitive part of the chip. The blue rim supports it. These shapes illustrate the sensing principle rather than the BMP280’s exact internal layout.
Explode separates the conceptual layers; X-ray makes the case translucent. External package dimensions follow the model specification; internal teaching geometry is conceptual, not to scale, and is not manufacturer CAD or a wiring diagram.