The Appliance Energy Meter consists of two modules. The larger PCB hosts the custom circuitry for this project, while the smaller one is used to build the Micromite LCD BackPack, which provides all the control, display and user interaction functions. The BackPack module and main PCB fit into a UB1 jiffy box, along with a mains fuseholder and two cable glands to secure the mains wiring. The May 2017 article introducing the LCD BackPack has the full construction details, although it's pretty self-explanatory. For UK readers (especially) we recommend buying the BackPack from micromite.org Once you've assembled the BackPack, including the display, check that it works if you can, but don't go any further. We'll program it after building the main PCB. If you're programming the PIC32 chip on the BackPack PCB yourself, now would be a good time to do that.
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