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Re: [Paparazzi-devel] BAROMETER ELECTION

From: Martin Mueller
Subject: Re: [Paparazzi-devel] BAROMETER ELECTION
Date: Wed, 20 Jul 2011 08:14:24 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20110617 Lightning/1.0b2 Thunderbird/3.1.11

Hi Rafael,

both the BMP085 and the MS5534A are supported:

The BMP085 gives a pretty noisy signal and the MS5534A is fairly old (a clock signal is generated by the TWOG at P0.7, see source code).

Take a look at the MS5611 that seems to outperform all other integrated pressure sensors.


On 18.07.2011 11:35, Rafael Espino Gómez wrote:
Hi all,

I'm designing a shield to integrate several sensors for my autopilot
(TWOG firm mounted in my own design). I have a doubt about the Barometer

- SCP1000 is obsolete and the sparkfun store recommend me the BMP085 as
replacement part. Is it possible to use is? Is the driver module
compatible for it ?
- MS5534A with SPI connection. I have a doubt with it: It has the
connections of SPI: SCLK, MISO, MOSI. But it has another one, MCLK. I'm
not sure where to connect it. Do I need a external crystal or oscilator?


Rafa Espino.


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