This product can now be purchased at www.ghielectronics.com. Barometer Sensor module for Gadgeteer. This module is used for atmospheric pressure, altitude and temperature sensing . A sensor HP03M, which measures the pressure based on a piezoresistive pressure sensor, was equipped on this module, and provides accurate pressure and temperature data to Gadgeteer mainboard via I2C bus. Requires socket type I. Features Gadgeteer socket type I Base on piezoresistive sensor -40 °C ~+8 °C operating range Resources Drivers Source Code Eagle file & datasheet External Links you need to download the following software to start your Gadgeteer: Development tool : Microsoft Visual C# Express 2010 Micro framework: Microsoft .NET Micro Framework 4.1 SDK The Gadgeteer core, mainboard SDk and module driver(GHI) You can download these tools at : http://tinyclr.com/support