There's also this
http://www.brain4home.eu/node/4
which would seem to be perfect for the job, but I've been completely
unable to get any response from Pascal either to requests for pin-out
information or to requests to buy it (Pascal, if you are listening to
this list, please get back to me)
Nigel
On 19/10/16 02:59, Andrew Errington wrote:
> The DS2423 is discontinued and hard to find these days.
>
> I built this, which is a DS2423 implemented on an ATtiny:
> https://www.tm3d.de/index.php/1-wire-device-mit-avr
>
> It works, but the address is hard-coded. There is a utility to
> generate new addresses if you will have more than one in your network.
>
> I also changed the fuse settings to lower the brownout detection
> voltage as I was running it at 3.3V, not 5V.
>
> I used it on a Raspberry Pi 3. It didn't work with the native
> w1_ds2423 module, but it did work with OWFS using the w1 driver.
>
> HTH,
>
> Andrew
>
> On 19 October 2016 at 10:36, Peter Hollenbeck <pwhb...@gmail.com
> <mailto:pwhb...@gmail.com>> wrote:
>
> Thanks. I'll work on it.
>
> On Tue, Oct 18, 2016 at 3:59 PM, Jan Kandziora <j...@gmx.de
> <mailto: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
> <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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