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Android App shows total power usage home

Discussion in 'Home Power and Microgeneration' started by Ron, Jul 12, 2012.

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  1. Ron

    Ron Guest

    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.
  2. mike

    mike Guest

    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.
  3. Ecnerwal

    Ecnerwal Guest

    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.
  4. mike

    mike Guest

    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.
  5. Jim Wilkins

    Jim Wilkins Guest

    For those of us who still have slide rules, this shows how to
    calculate power by timing the meter rotor:

    The Kill-A-Watt EZ can predict the cost of using an appliance for a
    month from a typical day's use, such as making coffee. It breaks down
    electricity use to the level where you can make choices, unlike
    measuring the entire house. It won't help with wired lights or 240V
    loads, but you can capture infrequent short-duration ones like a
    clothes dryer from meter readings.

  6. Ron

    Ron Guest

    Op 13-07-12 wk 28 02:30, schreef:
    The KWCalculator does miscalculate completely
    600 r/kWh at 6 seconds rotation = 360 Watts?
    This is completely wrong!!!

    iStrohm only costs 1 beer for crying out loud and is mobile and does the
    job correctly and in a user-friendly and fun way!
  7. Ron

    Ron Guest

    Op 13-07-12 wk 28 03:44, Ecnerwal schreef:
    What a long story iStrohm is dirt cheap!
  8. Jim Wilkins

    Jim Wilkins Guest

    But the phone isn't, and these are alternatives for those who don't
    have them.

  9. Ecnerwal

    Ecnerwal Guest

    Why buy beer for a spammer who drinks cheap beer?
  10. Ron

    Ron Guest

    Op 13-07-12 wk 28 19:11, Ecnerwal schreef:
    Such negative vibes guys, you need to get out more...
  11. Jim Wilkins

    Jim Wilkins Guest

    Welcome to the Internet.
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