There's a kill-o-watt in the shop in one of the pockets with all the
multimeternext to the electronics bench. If anyone wants to play with it.
Simon
On 02/10/2016 05:02 PM, Steven Owens wrote:
That might be cool, yeah. Mainly I want to get an idea of what's using how much juice around my house and my mother's house.
On Feb 10, 2016 4:58 PM, "Ryan Priore" <ryan.priore@xxxxxxxxx <mailto:ryan.priore@xxxxxxxxx>> wrote:
Steve,
I have a kilowatt that you would be more than welcome to borrow if
you simply wanted to check out what some of your devices are
using. I offer this to save you the money on buying one if you
were only going to use it for a short term.
Ryan
On Wednesday, February 10, 2016, Yevgeniy Soroka
<ukranians2@xxxxxxxxx <mailto:ukranians2@xxxxxxxxx>> wrote:
Sorry to sidetrack, but the talk about power meters gave me
the idea, and now I'm thinking about it, haha.
For the laser cutter power meter, I'm thinking a CT on the
wires going to the outlet. Some circuitry to convert the CT
signal to an arduino, you press a start button, and then add
up the power usage while the laser cutter is cutting, press a
stop button, and the arduino displays how much money you owe
on an LCD screen. You will also be able to enter the current
rate per minute.
For the current system of 25 cents/min, we are assuming the
power levels are constant during the entire cut. In reality
the power levels vary a lot depending on if youre etching, or
cutting regular materials, and of course depending on the
power level you set in the laser cutter software.
When all is said and done, the accurate $ value will not be
too different from what people are currently paying, but its a
fun project, so why not.
-Geno
On Wed, Feb 10, 2016 at 3:22 PM, Yevgeniy Soroka
<ukranians2@xxxxxxxxx> wrote:
You might want to create a system similar to the one used
by HackPGH. The one near the fusebox with the LCD screen.
From what I understand its connected directly to the fuse
box and measures all power use of all devices in the shop.
The Kill A Watt only measures power usage from devices
connected directly to it.
As a Power Electronics guy I'm very interested in how the
HackPGH power meter setup with the LCD screen works. Who
set it up, and when? Also I'm potentially interested in
creating a power meter for the laser cutter which will
tell you directly how much money you owe.
-Geno
On Wed, Feb 10, 2016 at 3:07 PM, Matthew Beckler
<matthew.beckler@xxxxxxxxx> wrote:
I have one, and it works well. It logs how many hours
it's been running, and totals up the kWh used. It also
displays the instantaneous power statistics (voltage,
current, power, power-factor, etc).
The biggest thing to consider when heading down this
road is to ask what you want to get out of the
process? I was just curious about how much power
things used, and I wasn't interested in long-term
monitoring. Keep in mind that you can't use a
kill-a-watt to monitor things that don't plug in to
the standard wall socket (furnace fan, oven, etc).
-Matthew
On Wed, Feb 10, 2016 at 2:01 PM, Steven Owens
<stevenjowens@xxxxxxxxx> wrote:
Thinking about doing some optimization of my
household electricity usage. Anybody have opinions
about the Kill A Watt or similar devices?
