RE: Re: TweetaWatt

["Richard \(lists\)" <rich_lists@xxxxxxxxxx>]

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_the_
core77
> .html
>
> Or
>
> http://bit.ly/12dEH
>
> M.
>
>
>
>
>
> [Non-text portions of this message have been removed]
>





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