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Real time web-based energy monitoring system

Former Member

Someone asked me if I want to get involved into a project described by the title of the topic. After a little research, I came across this simple DIY system. The goal is to fit this system in a small box like this one. Being a small plug-in system, I won't need clamps.

 

In this case, voltage will be coming directly on the PCB, so what is there that need changing in order to accurately measure the energy consumption?

  • If you are asking questions like this then you DO NEED ISOLATION FROM THE MAINS and the clamps are a good way to do it.

     

    If you want to measure the power being used by plug in appliances then it is necessary to measure mains supply current and possibly voltage. Unless you know what you are doing and observe reasonable precautions you can kill/injure yourself or someone else.

    The easy way round this is to use some inherently isolated current measuring technique  - which is why the Instructable uses clamps

     

    You can measure supply current using hall effect sensors which can also be easily isolated but packaging the electronics in the small plug thingy you link to will not be easy. How do you intend to get the data out of the little box and how will you power the electronics ?

     

    MK

  • in reply to michaelkellett

    Ok, I've figured out how to sample the current and voltage. I'll use an Arduino board to process data and transmit it over wifi to the web.

     

    Now, will a Uno with a wifi shield be enough or could I just use a Yun?

     

    I don't know the main differences between the Yun and the Uno, so what sould I use?

  • If you'd like some more info on energy monitoring the following site has some good resources:

    Home | OpenEnergyMonitor