Barometric pressure and rain gauges

"Everett M. Greene" wrote:
> 
... snip ...
> 
> While we're on the subject, is there a good non-mechanical
> method for measuring wind speed?

Stick finger in mouth, extract, and hold up.  Wind is coming from
cool side, and coolness is a relative measure of wind speed. 
Calibration to local conditions is needed :-)

-- 
Chuck F (cbfalconer@yahoo.com) (cbfalconer@worldnet.att.net)
   Available for consulting/temporary embedded and systems.
   <http://cbfalconer.home.att.net>  USE worldnet address!

"CBFalconer" <cbfalconer@yahoo.com> wrote in message
news:4090B779.CD0BE318@yahoo.com...
> "Everett M. Greene" wrote:
> >
> ... snip ...
> >
> > While we're on the subject, is there a good non-mechanical
> > method for measuring wind speed?
>

For a professional solution, go to <http://www.vaisala.com/>,
pick wind sensing and look for WS425.

Tauno Voipio
tauno voipio @ iki fi

CBFalconer <cbfalconer@yahoo.com> writes:
> "Everett M. Greene" wrote:
> > 
> .... snip ...
> > 
> > While we're on the subject, is there a good non-mechanical
> > method for measuring wind speed?
> 
> Stick finger in mouth, extract, and hold up.  Wind is coming from
> cool side, and coolness is a relative measure of wind speed. 
> Calibration to local conditions is needed :-)

You forgot to mention the Wyoming wind gauge -- a log chain
hanging from a tree limb.  You count the number of links
standing straight out.

NCAR may want to consider the chain method.  They once lost
their anemometer after seeing the velocity go off scale at
125 MPH in one of Boulder's "breezes".  [Hurricanes?!?
Hurricanes are for wimps!]

Everett M. Greene wrote:
> "Neil Bradley" <nb_no_spam@synthcom.com> writes:
> 
>>I'm currently designing a replacement main board for my Heathkit ID-5001
>>weather station. I already have replacement relative humidity,
>>windspeed/direction, and temperature sensors, but I'm looking for a
>>barometric pressure and and rain gauge sensor solution. By any chance is
>>anyone aware of an I2C or SPI based device that can provide this
>>functionality? Or better yet, is there anyone that can point me to how some
>>of the electronic rain gauges work?
> 
> 
> What's rain?  8-)
> 
> While we're on the subject, is there a good non-mechanical
> method for measuring wind speed?

I'll refer to my earlier response:

For a professional solution, go to <http://www.vaisala.com/>,
pick wind sensing and look for WS425.

Tauno Voipio
tauno voipio @ iki fi