Re: TweetaWatt

["Paul Bendall" <paul@xxxxxxxxxxxxxxxxx>]

I see your point.

I am hoping that the write-up of interfacing with the Kill-a-watt
may give a better understanding of what measurements can be tapped
from the IC

Paul

--- In ukha_d@xxxxxxx, "Richard \(lists\)"
<rich_lists@...> wrote:
>
> The unit itself can, but the hack is just getting the raw
current and
> voltage readings.
>
>
>
> Would be fine for a comparative idea about how much you are
reducing your
> usage, but hopeless for estimating the cost of running
something, the
> inbuilt display is better for that but still not ideal.
>
>
>
>
>
>
>
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On
Behalf Of
> Paul Bendall
> Sent: Thursday, January 29, 2009 2:24 AM
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Re: TweetaWatt
>
>
>
> From what I have read it is able to measure and output volts,
amps,
> watts, volt-amps, frequency, power-factor, KWh and time.
>
> Paul
>
> --- In ukha_d@xxxxxxx <mailto:ukha_d%
40yahoogroups.com> , "Richard
> \(lists\)" <rich_lists@>
> wrote:
> >
> > Its actually getting kVAh which from what I have seen on my
> measuring
> > devices is sometimes a huge difference from the actual power
> consumed and
> > billed for. Particually on switching power supplies.
> >
> >
> >
> > No idea if the chip in them calculates the true watts and
would be
> able to
> > get it out of it easily, but the simplistic measurement that
the
> tweetawatt
> > does will be far from ideal on things like dimmed lights,
horrible
> energy
> > saving lights and PCs which at least for me are where a bulk
of the
> power
> > goes to.
> >
> >
> >
> >
> >
> >
> >
> > From: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
> [mailto:ukha_d@xxxxxxx <mailto:ukha_d%
40yahoogroups.com> ] On
> Behalf Of
> > Mark McCall
> > Sent: Wednesday, January 28, 2009 9:45 PM
> > To: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
> > Subject: [ukha_d] TweetaWatt
> >
> >
> >
> > "Using "off-the-shelf hardware", we have modified
a Kill-a-Watt
(TM)
> power
> > meter to "tweet" (publish wirelessly) the daily KWH
consumed
to the
> user's
> > Twitter account (Cumulative Killowatt-hours). We are releasing
this
> project
> > as an "Open source hardware" project - in other words,
anyone
can
> make
> > these, modify them and make a commercial product from the
ideas and
> > methods..."
> >
> >
>
http://blog.makezine.com/archive/2009/01/tweetawatt_our_entry_for_t
he_
> core77
> > .html
> >
> > Or
> >
> > http://bit.ly/12dEH
> >
> > M.
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
>
>
>
> [Non-text portions of this message have been removed]
>



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