Split-Single-Phase-Energy-Meter | Split Single-phase Energy Meter

If you purchased an energy meter kit EmonESP is pre-loaded onto the included ESP32. You can skip this section and go to Setting up EmonCMS.
Clone this repository in GitHub desktop or download all the files and extract them to a folder
Place the ATM90E32 folder in your Arduino libraries folder. This is usually under Documents > Arduino > libraries
We highly recommend using EmonCMS. - EmonESP helps to connect and send data directly to EmonCMS
Open EmonESP > src > src.ino - you will see several files open, but you'll only need to worry about src.ino
Make sure the CS_pin is set to the pin that you are using on your controller board - the defaults are listed in src.ino and in the hardware section here.
Upload the src.ino to your ESP (If you get any errors at this point, like a missing library, check the Troubleshooting section on the EmonESP readme.) If you are using an ESP32, make sure you are using the latest software from the Espressif repository.
Upload files to the ESP in the data directory via SPIFFS - see details on how to do this here
Follow the directions to configure the Access Point in the EmonESP directions
There are a few options for doing this:. If you install EmonCMS on a remote web server, or if your home network has a public facing port, this will make it possible to see data on the EmonCMS app (Android or iOS) when your phone is outside of your network.
You can use the EmonCMS.org service, which costs roughly $15 a year with the data that we send from the energy meter (you don't have to send all of the data)
Install on a computer within your network. To do this, you will need to have apache/php/mysql installed) This can also be done with a Raspberry Pi.
Install on a remote web server. There are some very cheap ways this can be done if you're familiar with setting up web applications.
Install the device plugin - this is now included in the default configuration
Upload this file to the Modules > device > data > CircuitSetup folder.
Once the folder is created and json file is uploaded, go to Setup (top left) > Device Setup > New Device (lower right)
Click on CircuitSetup in the left menu You will see this:
Fill in the Name and Location and click save.
You will then see the fields and inputs - click Initialize:
You should now see this under Feeds:
And this under Inputs:
If you purchased an energy meter kit you can skip this section and go to Installing the Energy Meter.
The solar kit comes with 2 meters, 4 current transformers, and optionally, 2 AC transformers. The 1st AC transformer, L1, should be plugged into an outlet the same way as noted above in the "Plug in the AC Transformer" section. The 2nd AC transformer, L2, for the solar kit should be plugged into an outlet that is on the opposite phase than the first AC transformer. If you do not have an outlet, we recommend having a licensed electrician install one. It is possible to power both energy meters with one AC transformer, you will just need a Y splitter. Close attention needs to be paid to the direction of the current transformers to properly measure the direction current is flowing. The mains current transformers (CT1, CT2) should be connected the same way as noted above starting with section "Connect Current Transformers to the energy meter". Current transformers to measure solar energy generation (SCT1, SCT2) should be connected to the wires coming into your panel from your solar inverter. This is usually a dual pole breaker with 2 hot wires (in the US). The arrows on the CTs should be opposite eachother, like with the mains CTs. The wire that is connected to the side of the panel that is the same as the solar AC transformer will point towards the panel. It may take some trial an error to get this correct. Energy generated by solar, but not used by your house will register on the mains CTs as negative, since energy is flowing back to the grid. In EmonCMS this calculation is done automatically assuming you have set up the "Solar Kit" device.
At this point all wires should be connected between your ESP and the Energy Monitor.
Connect the Energy Monitor to the AC Transformer and plug it in - the ESP and Energy Meter should both have power. If either do not, check your connections.
Open the Arduino IDE
Connect your ESP to your computer via USB cable
Select the COM port under Tools > Port
Go to Tools > Serial Monitor
Values should be scrolling by. If you do not see anything in the serial window, make sure the correct COM port is selected for your ESP in the Arduino IDE.
The first time the ESP32 or ESP8266 is started with EmonESP, it will not be connected to a local router, and will go into SoftAP mode. You can connect to the interface via a cell phone or other wireless device to access the interface via a web browser at 192.168.4.1 or emonesp.local. For more details on this see EmonESP WiFi Connection
If the ESP is already connected to a network, you can access the interface with the IP address that your router assigned to it.
Go to the Calibration section: