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Monitoring your home's energy usage

Posted: Thu Dec 14, 2006 12:35 pm
by Newz2000
This is cool.

It shows your home's current energy use in watts and updates its display instantly. It can also show your usage in british pounds so you can instantly see the cost savings of switching to ccfl bulbs, turning off lights, etc.

Someone should make a North American version.

Posted: Thu Dec 14, 2006 3:17 pm
by bodgy
EPE magazine have done two project in the last 10 years for power usage monitoring.

Microchip have two such projects on their App Notes website and I think it's Linear who have an app note to go with their RMS front end inst amp.


Posted: Thu Dec 14, 2006 7:36 pm
by dacflyer
here you can also buy a device that plugs into your outlet, its called
kill-a-watt ... tor_review

much detail on how to use it..

Posted: Thu Dec 14, 2006 8:00 pm
by ku7485
Dallas Semiconductors (Maxim) also as an App Note for creating a electric meter:
and also the customization guide:

I think if you ask DS (Maxim) nicely, you can get free samples of the MAXQ microcontroller.


Posted: Tue Jan 09, 2007 10:39 am
by moe
I have had no luck in contacting this company anyone have anymore info then what is on their web site?
Moe :sad:

Posted: Wed Jan 10, 2007 3:27 am
by jwax
Here's the response I received from them-
Hi John,

Thanks for your email, its great to hear you like our product. Unfortunately Wattson is not quite ready for North America yet. It is something we are working towards, and we hope to be able to give you some good news about that early next year. If you sign up to receive our newsletters, then we will make sure you hear about Wattson coming to America in plenty of time for you to be one of the first to get your hands on one. The newsletter sign up is in the contacts section of

I hope that helps, and look forward to hearing from you again sometime.

Best regards,


Richard Woods


DIY Kyoto Ltd

1 Temple Yard,

Temple Street,

Bethnal Green,

London E2 6QD.

Studio: 020 7729 7500

Mobile: 07855 252 136

Posted: Thu Jan 11, 2007 5:40 pm
by Janitor Tzap
Have you got the Aug & Sept 1999 Issue of N&V?

There is a Kit called "WATTS SHOWING" in those Issues.

The full kit $79.00 +$5.00 shipping.
Available from "Harrison R&D" {}
Phone: 281-751-8836

PLEASE NOTE:The article is seven years old, and this company may not
still carry the kit.

Just thought I'd mention it to you.

Signed: Janitor Tzap