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Android App shows total power usage home

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Posted by Ron on July 12, 2012, 9:57 pm
Instantaneously knowing how much Watt your entire house uses with
Android App called iStrohm is possible from today.

iStrohm works by clocking one round of your fuse box rotating disk,
showing immediate total Watt usage.

Alternative Apps also exist, but they require manual input of the kWh
consumption and do not show current Watt usage, which makes
energy-measuring and energy-saving a very time-consuming task.

iStrohm makes serious energy-savings an easy do within minutes task.

Offered for only 1,99 at the Google Play Store for Android phones.

iPhone users will also find iStrohm soon at the Apple AppStore, where it
currently is waiting for review.

Posted by news on July 13, 2012, 12:30 am

There are a couple of free Android apps for that.

The Web version is here:

and the standalone app is here:

Might as well give the goodies away as I was "SmartMeter"ed recently.
In spite of the variety of meters available, the new meter they
installed is one of the few with no simple means of access :-(

Posted by mike on July 13, 2012, 12:48 am
 On 7/12/2012 5:30 PM, news@jecarter.us wrote:

That's too bad. I was lucky enough to get one with the blinky infrared LED.
I can just point my PalmIII at it and log/graph consumption.

Posted by Ecnerwal on July 13, 2012, 1:44 am
 All you need to get a disk readout is a watch, if you have a disk
meter...perhaps a calculator as well, both of which are probably built
into your cell phone, even if it's not a "smartphone."

For a not-huge chunk of change  and one visit of a licensed electrician
competent to disconnect your main wire, run it through a current
transformer, and reconnect it, you can have a much more convenient
method to look at your usage from inside the house. An ammeter is the
simplest readout to connect, or you can have an actual power meter if
you wish to be fussy (if the voltage varies enough that an ammeter is
not a pretty direct reading of your power used, you have fairly poor
power supply.) It's also a lot more like instantaneous, which something
depending on disk rotation is going to be a far cry from - if there's
even a rotating disk - modern meters, even if not "smart" are often just
an LCD display. A current transformer updates in real time, while the
disk only tells you every few seconds if you are using lots of power, or
every few minutes if you are using a small amount of power.

That's a hardware solution, of course, but beats the heck out of
standing around by the meter pointing your phone at it, if you want
ongoing monitoring. You can even datalog it with a computer and make
fancy charts. Whether that will actually affect your power use patterns
kinda depends on you.

Cats, coffee, chocolate...vices to live by
Please don't feed the trolls. Killfile and ignore them so they will go away.

Posted by mike on July 13, 2012, 3:58 am
 On 7/12/2012 6:44 PM, Ecnerwal wrote:

You can buy a clip-on current monitor for far less than the cost of
an electrician.

  An ammeter is the

Depending on how many phases you have, you may need 2 or 3 current meters.

An ammeter will let you calculate volt-amps.  That is NOT the power
that you pay for.  You need phase information to calculate real power.
That's why monitoring the electric company meter is best.  It reads out
exactly what you're paying for.

  It's also a lot more like instantaneous, which something

Meters vary.  Mine has a simulated wheel on the LCD display plus
an infrared LED that flashes (once per second at 3600W).

A current transformer updates in real time, while the

Give some examples of why you'd need instantaneous readouts and data
integrated accurately over a few seconds wouldn't work.

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