BMP280 Barometric Pressure and Altitude Sensor I2C SPI Module

BMP280 Barometric Pressure and Altitude
Sensor I2C/SPI Module is a cheapest and tiny Atmospheric Sensor Breakout
to measure barometric pressure, and temperature readings all without
taking up too much space. Basically, anything you need to know about
atmospheric conditions you can find out from this tiny breakout. The
BMP280 Breakout has been designed to be used in indoor/outdoor
navigation, weather forecasting, home automation, and even personal
health and wellness monitoring.

BMP280 Barometric Pressure and Altitude Sensor I2C/SPI Module

This module uses an environmental sensor
manufactured by Bosch with temperature, a barometric pressure sensor
that is the next generation upgrade to the popular BMP085/BMP180/BMP183
Sensor. This sensor is great for all sorts of weather sensing and can
even be used in both I2C and SPI; This precision sensor from Bosch is
the best low-cost, precision sensing solution for measuring barometric
pressure with ±1 hPa absolute accuracy, and temperature with ±1.0°C
accuracy. Because pressure changes with altitude and the pressure
measurements are so good; you can also use it as an altimeter with ±1
meter accuracy.

The BMP280 is the next-generation of
sensors and is the upgrade to the BMP085/BMP180/BMP183 – with a low
altitude noise of 0.25m and the same fast conversion time. It has the
same specifications but can use either I2C or SPI. For simple easy
wiring, go with I2C. If you want to connect a bunch of sensors without
worrying about I2C address collisions, go with SPI.

1. Get more precise temperature, atmospheric pressure values, and approximate altitude data
2. Enhancement of GPS navigation (e.g. time-to first-fix improvement, dead-reckoning, slope detection)
3. Indoor navigation (floor detection, elevator detection)
4. Outdoor navigation, leisure and sports applications
5. Weather forecast
6. Health care applications (e.g. spirometry)
7. Vertical velocity indication (e.g. rise/sink speed)
8. Libraries and tutorials available for Arduino and other microcontrollers
9. Operating Voltage: 1.71V to 3.6V – would typically be operated from 3.3V
10. Operating Temperature: -40 to +85 deg. Celsius (full accuracy between 0 and +65 deg. C)
11. Peak current: 1.12mA
12. Operating Pressure: 300 hPa to 1100 hPa
13. Accuracy between 700 to 900hPa and 25 to 40 deg. C: ±0.12hPa and ±1.0m