Description

This is an easy to use barometric sensor you can use with Arduino to measure 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 accuracy of 1m, with noise of only 17cm in ultra high resolution noise. The device will operate at only 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.

It uses I2C, the device provides pressure and temperature as 16-bit values, which are used along with calibration data within the device are used to provide a temperature compensated altitude calculation.

Features

• Operating voltage : 1.8 – 3.6V
• Operating current : ~0.5uA at 1Hz
• I2C interface
• Max I2C Speed : 3.5MHz
• Very low noise : up to 0.02hPa (17cm)
• Pressure range : 300hPa to 1100hPa
• Altitude range : +9000m to -500m
• Weight : 1.18g
• Size : 13 x 10mm

Wiring

Attachments

• Datasheet – BMP180
• Tutorial : GY-68 BMP180 Barometric Pressure Breakout Board Tutorial With Arduino Uno – Instructables