I2C Pressure Sensor - Revision history

Glenn: + Category:Accessories

2010-09-09T15:49:32Z

2009-10-14T19:55:34Z

2009-10-02T04:18:03Z

2009-10-01T21:47:46Z

user interface

2009-10-01T21:45:13Z

2009-10-01T21:44:25Z

Random information (current consumption, resolution, todo)

2009-09-30T21:13:31Z

2009-09-30T19:41:49Z

2009-09-30T19:20:55Z

2009-09-30T19:10:49Z

← Older revision		Revision as of 15:49, 9 September 2010
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	For other chips and ideas on how to use them see [[Variometer]] and [[Wish_List_-_Hardware_-_Atmospheric]].		For other chips and ideas on how to use them see [[Variometer]] and [[Wish_List_-_Hardware_-_Atmospheric]].

		+
		+	[[Category:Accessories]]
	[[Category:Hardware ideas]]		[[Category:Hardware ideas]]

@@ Line 26: / Line 26: @@
 === Resolution ===
 I think I can get about 0.5m. The datasheed says 0.25m and better could be possible with software averaging.
 == Todo ==

← Older revision		Revision as of 04:18, 2 October 2009
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	== Links ==		== Links ==
	For other chips and ideas on how to use them see [[Variometer]] and [[Wish_List_-_Hardware_-_Atmospheric]].		For other chips and ideas on how to use them see [[Variometer]] and [[Wish_List_-_Hardware_-_Atmospheric]].
		+
		+	[[Category:Hardware ideas]]

@@ Line 30: / Line 30: @@
 * Figure out if/why the sensor reports increased pressure results if it's heated up [in progress]
 * Do some resolution tests
 == Links ==
 For other chips and ideas on how to use them see [[Variometer]] and [[Wish_List_-_Hardware_-_Atmospheric]].

@@ Line 27: / Line 27: @@
 I think I can get about 0.5m. The datasheed says 0.25m and better could be possible with software averaging.
-=== Todo ===
+== Todo ==
 * Figure out if/why the sensor reports increased pressure results if it's heated up [in progress]
 * Do some resolution tests

@@ Line 1: / Line 1: @@
 The BMP085 ([http://www.bosch-sensortec.com/content/language1/downloads/BMP085_DataSheet_Rev.1.0_01July2008.pdf Datasheet]) from [http://www.bosch-sensortec.com/content/language1/html/3477.htm Bosch Sensortec] is a simple, easy to use, pressure sensing device. It speaks I2C and includes a temperature sensor.
 Because of it's tiny size of 5.0mm x 5.0mm x 1.2mm it fits nice into the Freerunner.
@@ Line 14: / Line 15: @@
 It searchs for the chip at I2C address 0x77 and exports a sysfs interface where you can read the temperature and the pressure as well as adjust the internal oversampling.
 For other chips and ideas on how to use them see [[Variometer]] and [[Wish_List_-_Hardware_-_Atmospheric]].

@@ Line 1: / Line 1: @@
 The BMP085 ([http://www.bosch-sensortec.com/content/language1/downloads/BMP085_DataSheet_Rev.1.0_01July2008.pdf Datasheet]) from [http://www.bosch-sensortec.com/content/language1/html/3477.htm Bosch Sensortec] is a simple, easy to use, pressure sensing device. It speaks I2C and includes a temperature sensor.
-Because of it's tiny size of 5.0mm x 5.0mm x 1.2mm it fits nice into the Freerunner. I glued mine into the empty space between the AUX key and the bluetooth antenna.
+Because of it's tiny size of 5.0mm x 5.0mm x 1.2mm it fits nice into the Freerunner.
-[[Image:BMP085.jpg]]
+[[Image:Bmp085-bottom.jpg]]
 The sensor needs just four wires: power (3.3V, GND) and I2C (SDA, SCL). The wiki page about [[I2C]] describes where to get them.
 An experimental kernel driver is available from [http://gitorious.org/freerunner-navigation-board/bmp085 gitorious].

← Older revision		Revision as of 19:41, 30 September 2009
Line 1:		Line 1:
−	The BMP085 ([http://www.bosch-sensortec.com/content/language1/downloads/BMP085_DataSheet_Rev.1.0_01July2008.pdf Datasheet]) from [http://www.bosch-sensortec.com/content/language1/html/3477.htm ~~bosch sensortec~~] is a simple, easy to use, pressure sensing device. It speaks I2C and includes a temperature sensor.	+	The BMP085 ([http://www.bosch-sensortec.com/content/language1/downloads/BMP085_DataSheet_Rev.1.0_01July2008.pdf Datasheet]) from [http://www.bosch-sensortec.com/content/language1/html/3477.htm Bosch Sensortec] is a simple, easy to use, pressure sensing device. It speaks I2C and includes a temperature sensor.
	Because of it's tiny size of 5.0mm x 5.0mm x 1.2mm it fits nice into the Freerunner. I glued mine into the empty space between the AUX key and the bluetooth antenna.		Because of it's tiny size of 5.0mm x 5.0mm x 1.2mm it fits nice into the Freerunner. I glued mine into the empty space between the AUX key and the bluetooth antenna.