Measuring
the absolute pressure of the environment using a digital barometer such
as this has some interesting applications. By converting the pressure
measured into altitude, you have a reliable sensor for determining the
height of your robot, plane or projectile!Using a sensor as capable as
the BMP180 you can achieve an accuracy of 1m, with a noise of only 17cm
in ultra-high resolution noise. The device will operate at 0.3uA meaning
low current draw for battery-powered applications.The BMP180 comes
fully calibrated and ready to use. As the device operates over I2C we've
added optional I2C pull-ups that can be enabled using the PU (pull up)
jumper on the board for your convenience and ease during
breadboarding.Using I2C, the device provides pressure and temperature as
16bit values, which are used along with calibration data within the
device are used to provide a temperature compensated altitude
calculation. Easy to interface with your Arduino or Raspberry Pi.
