Thanks. I'll work on it.
On Tue, Oct 18, 2016 at 3:59 PM, Jan Kandziora <j...@gmx.de> wrote:
> Am 19.10.2016 um 00:33 schrieb Peter Hollenbeck:
> > I would like to count revolutions of an anemometer, perhaps this one:
> > http://www.inspeed.com/anemometers/vortex_wind_sensor.asp
> >
> > I would appreciate suggestion on how to implement a counter.
> >
> You could use the DS2423, or some of the homebrewn DS2423 replacements
> out there. As it has a reed switch, you need some debouncing on the input:
>
> ^ +5V
> |
> 10kΩ
> |
> .-----+-------> DS2423 input
> | |
> o |
> \ 100nF
> \ |
> o |
> | |
> === === GND
>
> These values give you ~1ms, which should be enough to debounce the
> switch and which is fast enough for 500Hz (== 1250mph for this anemometer.)
>
> Kind regards
>
> Jan
>
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