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5

I'm looking for a very low cost barometric pressure sensor. The SCP1000-D01 available at Sparkfun and elsewhere is around $25 but I was hoping to find something in the $5-10 range. I am only interested in rough relative pressure change, so it does not have to have high precision or be calibrated. Basically something like the thermistor equivalent for pressure...

edited Dec 28 at 17:08

asked Dec 28 at 16:32

SteveP
73●5

	tough question! -- i'll ask around at work when I get a chance -- there's some Japanese company that makes some pressure sensors that are low cost.... although it could be that they are just low cost in high volumes. – Jason S♦ Dec 29 at 1:02
	Thanks, additional options would be useful. – SteveP Dec 29 at 17:07

knpham · Accepted Answer · 2010-02-04 22:35:32Z UTC

Futurlec has a few barometric sensor in the $5-10 range. These use I2C interface though, so a bit more involved in the MCU side than a simple analog voltage.

http://www.futurlec.com/Pressure_Sensors.shtml

If you're in Australia, you can buy from their Australian website as well.

blalor · Answer 2 · 2009-12-28 20:05:41Z UTC

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I would take a look at the sensors from Freescale. I bought an MPX4115A from Mouser.com for about $10. This is (supposedly) suitable for use as an altimeter; I haven't gotten to that project, yet. :-)

answered Dec 28 at 20:05

blalor
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Interactive Matter · Answer 3 · 2010-01-06 10:37:49Z UTC

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You can check out the Bosch Sensortec BMP085 sensor. It is SMT, but it gave me good results.

answered Jan 6 at 10:37

Interactive Matter
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	Thanks, this is excellent as well. Nice breakout board. – SteveP Jan 8 at 2:53
	I still have some - so if anybody is interested - hit the contact button on my site ;) – Interactive Matter Jan 8 at 7:42

Leon Heller · Answer 4 · 2009-12-28 23:38:18Z UTC

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Those Freescale devices are very easy to use - I'd interface it to a small MCU with an ADC. Alternatively, you could just connect it to a voltmeter.

edited Dec 28 at 23:38

answered Dec 28 at 21:37

Leon Heller♦
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Some guy · Answer 5 · 2010-01-11 06:22:36Z UTC

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Another vote for the MPX4115 family - I'm using one, they're very simple to use & cheap.

answered Jan 11 at 6:22

Some guy
141●1

Low cost barometric pressure sensor

5 Answers