This is an old project, and probably no one currently at Omega Verksted knows anything more about it than what is provided on this page. You can try to recreate it if you want, but the documentation is provided as-is and it may be outdated.
Current projectThe Household PowerMeter is a simple circuit with an AVR and a photodetector that detects flashes from the household wattmeter. The AVR software utilizes the on-chip UART serial port and sends arbitrary data to notify a host about the flashes. With this simple circuit and software one can log and analyze the total household power usage. A perl-script for logging the data into a mySQL database and a PHP page to display the data is also made.
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