Barometric pressure digital sensor		 	
			
https://www.olimex.com/Products/Modules/Sensors/MOD-BMP085/open-source-hardware		
						| Price | 5.95 EUR | 
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| 10 - 49 pcs | 5.36 EUR | 
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| 50 - 10000 pcs | 4.76 EUR | 
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																	BMP085 is barometric pressure digital sensor which measures pressure in range 300..1100hPa (+9000m .. -500m above sea level)
BMP085 is with I2C interface and can connect to any board with UEXT