How do i calculate the weekly energy usinge PZEM-004T-100A
Start by studying the user manual, and learn how to use the module. Make sure that the reported voltage and current values are correct for several test cases.
From there, calculate average power consumption in watts over 1 second, 1 minute or 1 hour (your choice) and sum those values for one week to arrive at the total in watt-hours per week.
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