I have a load of these and have built four of them onto boards which are
counting the flashes of the LED on the four electricity meters I have here
(import, export and two solar PV systems). They work very well.
Paul Everett
> On 19 Oct 2016, at 18:16, Nigel Titley <ni...@homechip.com> wrote:
>
> 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> wrote:
>>> 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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>>
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