Practical Usage

Category: EM-1

  • EM-1: Energy Monitor – Completed Hardware

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    rt
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    Christmas vacations are for having fun. I did have fun! I completed a project that had been sitting idle for some time: The Energy Monitor for the house/office. The project is described over a few other posts. Most of the theory and practical application is explained in detail at openenergymonitor.org. I adapted their circuits for…

  • EM-1: Calculating a burden resistor: an alternate method

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    rt
    in

    I was having trouble calculating the burden resistor necessary for my 5 current sensors. I have 2 200-Amps on the mains coming into the house (I live in north-america), 2 100-Amps floating on different individual breakers and 1 30-Amps also floating. Each sensor type has a different number of turns on the secondary coil. These…

  • EM-1: The microcontroller/programming part

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    rt
    in ,

    This is the actual electronics for this project: Here’s the theory. The idea is  that you first need a reference voltage to compare your sensor readings to. The voltage at the street varies a bit, and the voltage inside a building varies a bit more, depending on demand and other factors. In our case, the…

  • EM-1: New project – Energy Monitor

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    rt
    in ,

    While prototyping the PU-2 and testing a lot of new components to reduce cost and increase performance, I decided to allocate some surplus equipment to a new project: the Energy Monitor. Basically, the project uses an Arduino (of course) linked to sensors placed in the main breaker box in the basement at the office. The…