[chbot] Power monitoring

Thu Jan 12 00:07:14 GMT 2017

I use a unit from http://lechacal.com/wiki/index.php/EmonWRT
Open Source unit which can measure 3 different ccts via clamp on CT sensors.
It does use a cloud based system but its free and has graphical interface
which you can download data from. Use it to measure water heating, heating
and total power consumption of my house. Can let you have a look at the web
based data if interested.
Also looks like
https://www.jaycar.co.nz/wi-fi-controlled-mains-power-socket-with-power-moni
toring-function-and-app/p/MS6124 has ability to download and monitor data

Cheers
Jody 

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Today's Topics:

   1. Power monitoring (Kiel Hurley)
   2. Re: Power monitoring (Jasper Mackenzie)
   3. Re: Power monitoring (Henri Shustak)
   4. Re: Power monitoring (Richard Jones)
   5. Re: Power monitoring (Volker Kuhlmann)
   6. Re: Power monitoring (Charles Manning)

----------------------------------------------------------------------

Message: 1
Date: Wed, 11 Jan 2017 21:37:02 +0000
From: Kiel Hurley <kielhurley at gmail.com>
To: chchrobotics at lists.linuxnut.co.nz
Subject: [chbot] Power monitoring
Message-ID:
	<CANyY3ALfePjWCuDv_uE8N6Su1N+bR2os8u_2OzZ1sNz2oUPamg at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

I'm looking for something to measure power usage which can export its data.
DIY or commercially available (but would prefer it isn't cloud connected).

I bought an old fridge off Trade Me and it seems to be on *most* of the
time, so I'd like to graph it's usage to see what's going on.

Just a single socket for a start. Might add more sockets later, but would
probably look into monitoring the whole house at that point.

Thanks,
Kiel
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Message: 2
Date: Thu, 12 Jan 2017 11:29:10 +1300
From: Jasper Mackenzie <jasper.mackenzie at gmail.com>
To: Christchurch Robotics <chchrobotics at lists.linuxnut.co.nz>
Subject: Re: [chbot] Power monitoring
Message-ID:
	<CAO0ALo3rC47+e++LLrbuxOqGAzkd8jY=r5jii_k6ENx=eGQKRA at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Many APC switched PDU's will give you this functionality. They can sometimes
be foudn for a steal of Trademe or ebay AU.
Maxim had a reference design for one of their chips that did power and
powerfactor etc. looked really good, but a bit expensive to fab as a one
off...
http://pdfserv.maximintegrated.com/en/an/AN5257.pdf looks pretty colse to
what you will want 8)

On 12 January 2017 at 10:37, Kiel Hurley <kielhurley at gmail.com> wrote:

> I'm looking for something to measure power usage which can export its 
> data. DIY or commercially available (but would prefer it isn't cloud 
> connected).
>
> I bought an old fridge off Trade Me and it seems to be on *most* of 
> the time, so I'd like to graph it's usage to see what's going on.
>
> Just a single socket for a start. Might add more sockets later, but 
> would probably look into monitoring the whole house at that point.
>
> Thanks,
> Kiel
>
> _______________________________________________
> Chchrobotics mailing list Chchrobotics at lists.linuxnut.co.nz 
> http://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
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> When replying, please edit your Subject line to reflect new subjects.
>
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Message: 3
Date: Thu, 12 Jan 2017 11:32:22 +1300
From: Henri Shustak <henri.shustak at gmail.com>
To: Christchurch Robotics <chchrobotics at lists.linuxnut.co.nz>
Subject: Re: [chbot] Power monitoring
Message-ID: <71785311-4760-4ADE-9E7B-F992AAD6683D at gmail.com>
Content-Type: text/plain; charset=us-ascii

> Many APC switched PDU's will give you this functionality.

+1 for the APC PDU's. However, if you were purchasing new it may hit the
bank to hard?

You can pick up a new fridge for less than some of these APC PDU's.

Hope that helps.
H

--------------------------------------------------------------------
HTRAX 2013 Revitalised : EGYPTIAN HUMP HTRAX : Direct URL download :
http://henri.shustak.org/download/htrax/egyptian-hump-htrax.mp3
"Dr Who Meets B52's" - More reviews : http://www.jessetaylor.com.au/htrax

------------------------------

Message: 4
Date: Thu, 12 Jan 2017 11:38:51 +1300
From: Richard Jones <richard.jones.1952 at gmail.com>
To: Christchurch Robotics <chchrobotics at lists.linuxnut.co.nz>
Subject: Re: [chbot] Power monitoring
Message-ID:
	<CAGQt8jxCHLgd8gv4jvaWkFY5dnQUBNO9Pa7f+qBV_E=k=okdWw at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

You could monitor and graph the current with one of these USB multimeters
for $40US:

https://www.aliexpress.com/item/HYELEC-MS8236-6000-Counts-Digital-Multimeter
-with-T-RMS-USB-1000V-10A-60M-Ohm-100mF-10MHz/32531814702.html

A while ago there was a power meter give away at the club. If someone could
spare you one I reckon they had an RS232 interface with a fancy protocol
that could be pressed into service with some effort. Then you could measure
real power. I would be interested to see how that works out.

Richard

On Thu, Jan 12, 2017 at 10:37 AM, Kiel Hurley <kielhurley at gmail.com> wrote:

> I'm looking for something to measure power usage which can export its 
> data. DIY or commercially available (but would prefer it isn't cloud 
> connected).
>
> I bought an old fridge off Trade Me and it seems to be on *most* of 
> the time, so I'd like to graph it's usage to see what's going on.
>
> Just a single socket for a start. Might add more sockets later, but 
> would probably look into monitoring the whole house at that point.
>
> Thanks,
> Kiel
>
> _______________________________________________
> Chchrobotics mailing list Chchrobotics at lists.linuxnut.co.nz 
> http://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
> Meetings usually 3rd Monday each month. See http://kiwibots.org for 
> venue, directions and dates.
> When replying, please edit your Subject line to reflect new subjects.
>
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Message: 5
Date: Thu, 12 Jan 2017 11:38:49 +1300
From: Volker Kuhlmann <list0570 at paradise.net.nz>
To: Christchurch Robotics <chchrobotics at lists.linuxnut.co.nz>
Subject: Re: [chbot] Power monitoring
Message-ID: <20170111223849.GA22403 at paradise.net.nz>
Content-Type: text/plain; charset=us-ascii

On Thu 12 Jan 2017 10:37:02 NZDT +1300, Kiel Hurley wrote:

> I'm looking for something to measure power usage which can export its
data.
> DIY or commercially available (but would prefer it isn't cloud connected).

I've used one of those <$20 plug-in-between things for that purpose, it does
give useful numbers but of course doesn't export enything.

There was a really expensive Swiss one I saw recently but forgot its name,
not sure whether that is because it only works with the cloud (which all
goes on my electronic junk pile).

It would be quite useful to have a setup like this, so if you do a survey
and review of what's available and post it here it'd be really helpful.

Volker

--
Volker Kuhlmann
http://volker.top.geek.nz/	Please do not CC list postings to me.

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Message: 6
Date: Thu, 12 Jan 2017 11:48:48 +1300
From: Charles Manning <cdhmanning at gmail.com>
To: Christchurch Robotics <chchrobotics at lists.linuxnut.co.nz>
Subject: Re: [chbot] Power monitoring
Message-ID:
	<CAE21AQq++4+ECNKrx7yz6kU+Ot0s7Xpr1i0_3cfHQEipF0vV5A at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

On Thu, Jan 12, 2017 at 11:38 AM, Volker Kuhlmann <list0570 at paradise.net.nz>
wrote:

> On Thu 12 Jan 2017 10:37:02 NZDT +1300, Kiel Hurley wrote:
>
> > I'm looking for something to measure power usage which can export its
> data.
> > DIY or commercially available (but would prefer it isn't cloud
> connected).
>
> I've used one of those <$20 plug-in-between things for that purpose, it
> does give useful numbers but of course doesn't export enything.
>
> There was a really expensive Swiss one I saw recently but forgot its
> name, not sure whether that is because it only works with the cloud
> (which all goes on my electronic junk pile).
>

I have one of those very expensive Swiss things. It is called yoctopuce.
http://www.yoctopuce.com/

It has a web interface (as well as many other interfaces) but is not Cloud
based. The web interface
works through a local web server running on your PC. I use Linux, but I
think it works with Windows
and Mac too.

They have various different sensors. I have a current sensor. They also do
a Watt sensor.
http://www.yoctopuce.com/EN/products/usb-electrical-sensors/yocto-watt

Priced to make your eyes water though.

>
> It would be quite useful to have a setup like this, so if you do a
> survey and review of what's available and post it here it'd be really
> helpful.
>
> Volker
>
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