oh it’s an optical interface to a smart meter, not “optical meter”. Could not find the schematic or BoM for the $15 PiggyMeter board. How does this “set new standards for documentation”?

Creating a graph in Google Sheets is fairly simple as long as you're logged into your Google account. 1. Open your Google Sheet, or create a new one by going to sheets.new and inputting your data ...

The ease with which you can create a line graph in Excel on your PC or Mac will do much to dispel the misconception that the program is arcane and unapproachable. With just three clicks of a mouse ...