Discussions

Baro protection suggestions

Posted by Oliver on May 31, 2011 at 7:16pm

Hi,

 

I read in the datasheet of the BMP085 barometer used in the APM that its sensitive to light (and probably the airflow generated by wind and props) which influences the accuracy.

 

Was wondering if anybody covered it and with what material as it still needs to be able to sense the ambient airpressure accuratly.

 

Ollie.

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Replies

  • Oliver May 31, 2011 at 8:38pm
    As its from a microphone cover, i think it should be ok, as the material used there also needs to let minute air pressure changes through.
  • Oliver May 31, 2011 at 8:29pm

    Here you go:

    3692217916?profile=original

  • Oliver May 31, 2011 at 7:51pm

    Found an old electret condenser mic in my pieces box. The little sticker protecting the mic fits just nicely onto the sensor.

    Good to hear it makes a difference. Maybe good idea to put this into the WIKI.

    Ollie.

  • Developer
    Jason Short May 31, 2011 at 7:42pm
    I used a piece of felt. baro is twice as good now.
  • Oliver May 31, 2011 at 7:22pm
    Thanks Andrew. Good idea!
  • Andrew Jenkins May 31, 2011 at 7:18pm
     I could not find any open cell foam around like off of a earphone. So used a piece of the soft velcro over it seems to work well.
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