Guys,

 I used a propeller from a model plane one time to turn a motor
 in wind.  I wasn't measuring wind speed with it as it were, but
 I guess I could have.  Anyway, a two or three balde prop ought
 to do the trick.  For a pulse generator, you could also use a
 part of an old mouse probably.  Just count the pulses in a
 given period, and transform that number to wind speed.


                                       Regards,

                                         Jim


On Fri, 14 January 2000, James Newton wrote:

>
> Now the question is: Where does one get (buy or make) the wind vane?
>
> How about wind mills? Any sources for making or buying the business end of a
> wind power system?
> I need a low cost to make, $0 to operate water pump for my passive solar
> heat storage system design.
>
> BTY: See, you can edit the Subject line to add [OT] ;)
>
> ---
> James Newton mailto:jamesnewton@geocities.com 1-619-652-0593
> http://techref.homepage.com The Technical Details Site.
> Members can add private/public comments/pages ($0 TANSTAAFL web hosting)
>
>
> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Smith, Clay
> Sent: Friday, January 14, 2000 11:02
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: Windspeed circuit?
>
>
> One method for wind speed measurement is to connect a permanent magnet motor
> to a wind vane.  The motor will act as a generator and the CEMF generated is
> proportional to the speed of the motor.  May be a 100v dc if your gearing is
> to step, but a higher max speed is better to get out of the IR drop RPMs
> CSS

jim@jpes.com