This is a simple breakout board for the BMP085 high-precision, low-power barometric pressure sensor. The BMP085 offers a measuring range of 300 to 1100 hPa with an absolute accuracy of down to 0.03 hPa. It's based on piezo-resistive technology for EMC robustness, high accuracy and linearity as well as long term stability. This sensor supports a voltage supply between 1.8 and 3.6VDC. It is designed to be connected directly to a micro-controller via the I²C bus
This breadboard-friendly board breaks out all pins of the BMP085 to a 4-pin 0.1" pitch header. We've also put two 10k pull-up resistors on the I2C lines.
Features:
- Digital two wire (I2C) interface
- Wide barometric pressure range
- Flexible supply voltage range
- Ultra-low power consumption
- Low noise measurement
- Fully calibrated
- Temperature measurement included
- Ultra-flat, small footprint
Dimensions:
- 15.2 x 15.2mm
Various documents are available:
- Schematic: http://www.flytron.com/pdf/BMP085_schematic.pdf
- Datasheet: http://www.flytron.com/pdf/BMP085_datasheet.pdf
- Arduino sketch example: http://www.flytron.com/pdf/BMP085_Example_Code.zip
Price is US$ 18.95 (on sale at time of writing).
More information at the Flytron website: http://store.flytron.com/sensors/141-bmp085-breakout-board.html

Comments
Use this with original AP 328 , a good value @ $19
It is amazing that load cells can measure a static load strain that is used for a barometric sensor.
The piesio quarts crystals have came a long way with small strain guages even today.
Isn't that the same sensor already on APM???