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Hi, In my country we also use 2 phases (110V each) AND neutral. The 2 phases are being used for 220V equipment. So how to setup power measurement for whole house now? I can't simply measure neutral cuz for my 220V equipment current doesn't flow through neutral.
So if these switches are flashed with new firmware they can't be controlled by the eWelink app anymore?
Awesome thankx. Yes at the moment since they're allowing us to call and give our meter readings they might as well just read it off a display. Putting the CT onlu on neutral will give only the single phase 127V reading. My 220V is wired on phase 1 and 2 so if I would be using 220V it would not be registered. Using the 2 CT's would be the way to go then. Thanx for the instructable. This will definitely be one of my upcoming projects.
Nice and useful project. How can I adapt this to my 2-phase installation? My mains are 3 wired, phase 1, 2 and Neutral. Does the code need to be modified to read only 2 inputs? Or will the 3rd reading show 0 since there will be no input there at all. What about the schematic, should I just scrap the phase 3 circuit? Or should the other values also be changed accordingly. Reason I want to build this is so I can mount the display near my gate for the utility company to take the readings from, instead of them having to come on to my property to take the readings. What about adding a second LCD to show the total cumulative KWh? And let's say at the time of completing your project your energy meter showed 20500 KWh, how will you tell your Arduino to start counting from that number onward?
So how about when I want the Arduino to RECEIVE an email and give a pulse as output? Can it be done with this same setup and other code?
Hi, Do you HAVE to unplug the two plugs to connect the Arduino to act as power button? Can't you just tap into one of the power button cables so you could still use the physical power button to turn it on and off. I want to integrate the Arduino to receive an ON or OFF instruction via email to remotely turn on my pc when I'm at work, so I can start a Teamviewer session on it.
So if this is for 9-16V system, will the components be the same if my battery is 18V?