Chris Jefferies
  • Berkeley, CA
  • United States
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home energy management
11 Replies

I originally posted this in MyPage and was disappointed at the lack of response.  I was prodded to re-post here and perhaps it will stir a discussion.I would call myself an advanced amateur at…Continue

Started this discussion. Last reply by William H Nickerson Nov 10, 2010.

 

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Chris Jefferies joined Diane Chojnowski's group
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Apr 21, 2011
Chris Jefferies updated their profile
Apr 21, 2011
William H Nickerson replied to Chris Jefferies's discussion home energy management
"Metering is going to be classical music of this new energy era.I too have started a micro processor data logging(LAN only)but as I add more sensor's the question always comes up.OK but what is it that I'm referencing this against?Weather…"
Nov 10, 2010
Peter Troast replied to Chris Jefferies's discussion home energy management
"Chris--sounds like we have similar views on the smart meter trojan horse, but let's not go there in this thread. Regarding the $50 challenge from Dan Reicher at Google: keep in mind this was his eventual goal. The numbers I've seen are…"
Nov 10, 2010
Bill Melendez replied to Chris Jefferies's discussion home energy management
"Chris: I can understand your concern and frustration over what is available to homeowners for managing their appliance energy. I also commend you on your inventing solutions. The home energy management market is gaining momentum and prices for…"
Nov 9, 2010
Silas Inman replied to Chris Jefferies's discussion home energy management
"Chris, That isn't a bad system at the David Brower Center, it is very similar to the system my company sells...except our electricity portion works and the information is update more frequently, the information for the Center isn't…"
Nov 9, 2010
Chris Jefferies just added their location.
Nov 9, 2010
Chris Jefferies replied to Chris Jefferies's discussion home energy management
"Silas, Peter, Yes I track lots of DIY sites and Twitter feeds. I used Google Reader to track dozens of blogs, too. I read Hackaday, Instructibles, MakezZine, Adafruit, MightyOhm and on and on... I go to the Maker Faire every year, and I'm…"
Nov 9, 2010
Peter Troast replied to Chris Jefferies's discussion home energy management
"@Chris--I like where you're headed with this, especially the ambient sensors and future potential for gas, propane and, I hope, heating oil. There are a couple of efforts, Plotwatt being the primary one, aimed at the space between the single…"
Nov 5, 2010
Chris Jefferies and Silas Inman are now friends
Nov 4, 2010
Silas Inman replied to Chris Jefferies's discussion home energy management
"Chris, Once you have completed your unit do you have any plans of making is accessible to the public or selling it? From your posts it seems that you would rather enjoy a website called hackaday. They have some great articles on there about creating…"
Nov 4, 2010
Chris Jefferies commented on Silas Inman's blog post Energy Savings to the Cloud
"Silas, I would challenge the concept of tracking the difference in kW based on the On/Off of an appliance. A refrigerator for instance cycles on and off at somewhat regular intervals. At night, perhaps is slows the cycles. So at the end of a week,…"
Nov 4, 2010
Chris Jefferies replied to Chris Jefferies's discussion home energy management
"Silas, I have built a sensor that uses an MQ 6 propane gas sensor. I also have similar gas sensors that can detect natural gas, carbon monoxide, and a generic one that senses smoke and flammable gas. These cost about $5 each. I also have a…"
Nov 3, 2010

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Company
Tinaja Labs
Professional Interests
Home energy management, data acquisition, wireless sensor networks, software development, open source...
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http://tinajalabs.com
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tinajalabs
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Chris Jefferies's Blog

Home energy management

I would call myself an advanced amateur at hardware/software solutions for home energy management. I experiment with various ways to remotely monitor sensors and I am particularly interested in ways to make it affordable and meaningful to track energy usage, down to the appliance level, within a residential environment.


My current system uses three power sensors and one temperature sensor (solar powered), all wireless using the zigbee protocol. They are polled by a low…
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Posted on October 27, 2010 at 12:28pm

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