BMP180 / GY68 Temperature and Pressure sensor

Used it for a weather station project and was surprised by how accurate the pressure readings are straight out of the box. The ultra-low power draw is a nice bonus for battery-powered builds.

Took me a few minutes to wire it up, but the pressure readings are dead-on compared to my local weather station. Bought it for a barometric altitude project, and the low power draw is perfect for battery use.

The I2C interface worked perfectly with my Arduino on the first try, and the pressure readings match my local weather station within a fraction of a millibar. For the price, this sensor is incredibly accurate and easy to set up with any breakout board.