Re: counting impulses from an LED

["Gavin Jacobs" <notasnoball@xxxxxxxxxx>]

There is a similar project here:
http://www.seanadams.com/pge/


"Marc Gerges" <marc.gerges@xxxxxxxxx> wrote in message news:1114200737.973183.291250@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Good evening everybody --
>
> My problem is this: there's a pulsing LED on my power meter that I'd
> like to use to track my electricity usage. The LED pulses 500 times per
> kWh usage, that translates to a pulse every 20s in normal times, but
> could go up to a pulse a second.
>
> I can do some soldering off a diagram and I do use a 1-wire bus to
> measure other stuff (Linux computer running 24/7 taking regular samples
> from some DS1820 temp sensors), but am very much not into hardware.
> What would be the easiest way to capture those pulses? 1-wire is
> preferred, but I'm happy with a serial connection, too.
>
> Thanks for suggestions!
>
> Marc
>