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A key point is that BMP280 is compatible with two digital interfaces, I2C and SPI.
This digital barometer has some interesting applications. By measuring the absolute pressure of the environment and converting this into altitude. you will have a reliable sensor for determining the height of your robot, plane or projectile. This sensor is capable of achieving an accuracy of 1m, with noise of only 17cm in ultra-high resolution. The device will operate at only 0.3uA meaning low current draw for battery powered applications.
Specifications
1.8V to 3.6V Supply Voltage
Low power consumption - 0.5uA at 1Hz
I2C interface
Max I2C Speed: 3.5 MHz
Very low noise - up to 0.02hPa (17cm)
Fully calibrated
Pressure Range: 300hPa to 1100hPa ( 9000m to -500m)
Weight: 1.18g
Size: 21mm x 18mm
What's in the box?
1 x BMP180 Digital Barometric Pressure Sensor Board Module 1 x Male to Male 4 pin header
Resources
Using the BMP180 with Raspberry Pi Note: Stock is currently available in South Africa for national shipping!