In this project, we will discover how to construct our very own Internet of Things–based electricity energy meter utilizing ESP32 and how to monitor data on the Blynk application. In the past, we constructed a GSM Prepaid Energy Meter. Because of the way that technology is now designed, you will need to walk into the meter reading room in order to record any readings. Therefore, keeping an eye on how much electricity you use and recording it can be a time-consuming and laborious chore. The Internet of Things is a useful tool that can help us automate this process. By automating the gathering of remote data, the Internet of Things helps users save both time and money. In recent years, the Smart Energy Meter has been the subject of a significant amount of praise all throughout the world. Why not construct our very own Internet of Things–based electricity and energy meter? It is necessary for us to choose the current sensor in addition to the voltage sensor so that both the current and the voltage can be measured, and therefore so that we can determine the amount of power that has been spent and the total amount of power consumed. The SCT-013 is the most accurate

current sensor that can be purchased anywhere. The SCT-013 Non-Invasive AC Current Sensor Split Core Type Clamp Meter Sensor is a device that can measure AC current of up to 100 amperes and does so without causing any damage to the electrical system. In a similar vein, the AC Voltage Sensor Module ZMPT101B is the most accurate voltage sensor available. The ZMPT101B AC Voltage Sensor performs exceptionally well in situations in which an accurate measurement of AC voltage using a voltage transformer is required. We are able to measure all of the necessary parameters for the Electricity Energy Meter by utilizing the SCT-013 Current Sensor as well as the ZMPT101B Voltage Sensor. Together, the SCT-013 Current Sensor and the ZMPT101B Voltage Sensor will be interfaced with the ESP32 Wifi Module, and then the data will be sent to the Blynk Application. The voltage, current, power, and total unit spent in kWh will all be displayed on the dashboard of the Blynk application.

ESP32 WiFi Module ZMPT101B AC Voltage Sensor Module SCT-013-030 Non-invasive AC Current Sensor 6x2 LCD Display Resistor 10K, Resistor 100ohm Capacitor 10uF Connecting Wires, and Breadboard SCT-013 Current Sensor

The SCT-013 Non-invasive AC Current Sensor Split Core Type Clamp Meter Sensor is capable of measuring AC current of up to 100 amperes and does so without causing any damage to the circuit. Current transformers, often known as CTs, are a type of sensor used to measure alternating current. They are very helpful for assessing the total electricity consumption of a whole building. There is no need to perform any high voltage electrical work in order to attach the SCT-013 current sensors because they can be hooked straight onto either the live or neutral wire. A current transformer is constructed in the same way as any other transformer, with a primary winding, a magnetic core, and a secondary winding. The secondary winding of the transformer is made up of numerous twists of tiny wire that are wrapped around the inside of the casing.

1. 1.Current Input Ranging from 0 to 30 A AC 2. Output Signal: DC 0-1 V 3. Non-linearity, between 2% and 3% 4. The sampling resistance that is built in (RL) is 62 ohms. 5. The ratio of turns is 1800:1. 6. Resistance Grade: Grade B 7. Temperature Range of the Workplace: -25°C to +70°C 8. Dielectric Strength (between the shell and the output): 1000 V AC / 1 mA for 1 minute

ZMPT101B AC Single Phase Voltage Sensor The ZMPT101B AC Single Phase voltage sensor module is based on a high precision ZMPT101B voltage Transformer. This voltage transformer is used to measure the precise AC voltage. When using Arduino or ESP32 to measure alternating current voltage, this is an excellent alternative. The Modules are able to monitor voltage up to a maximum of 250V AC, and the analog output that corresponds to this measurement can be changed. The module is easy to operate and is equipped with a trim potentiometer that has many turns, which may be used to tune and calibrate the ADC output.

1. The ability to test voltages up to 250 volts is present. 2. Conveniently portable and with an integrated high-precision voltage transformer 3. On-board op-amp circuit with a high degree of precision 4. Operating temperature: 40ºC ~ + 70ºC 5. Supply voltage 5 volts to 30 volts Circuit Diagram & Hardware Setup Now let's take a look at the schematic for the Internet of Things-based electricity energy meter that uses ESP32. The schematic for the circuit was created in the software known as Fritzing.

The diagram of the connections is straightforward. Both of the sensors, the SCT-013 Current Sensor and the ZMPT101B Voltage Sensor, have their VCC connections made to the ESP32's Vin supply, which is 5 volts. Both of the modules have a connection made between their GND pins and the GND pin on the ESP32. A connection has been made between the output analog pin of the ZMPT101B Voltage Sensor and the GPIO35 of the ESP32. The output analog pin of the SCT-013 Current Sensor is also wired to the GPIO34 of the ESP32. In addition to a capacitor with a 10 uF rating, you will need two resistors with a value of 10 kilobards and a single resistor with a value of 100 ohms. In addition to the circuit portion, the AC wires that need to have their current and voltage monitored are connected to the input AC Terminal of the Voltage Sensor. In a similar manner, the current sensor clip does not have any connections, and instead, a single live wire or neutral wire is inserted inside the clip component in order to complete the circuit. This is demonstrated in the diagram that was presented before.

It is not necessary to complete this project with a 16x2 LCD. Because we will be watching the ESP32/SCT-013 ZMPT101B/ Energy Meter Data on the Blynk Application, there is no requirement that the LCD be connected. In the event that you want to connect the LCD, you are going to need a great deal of connections. Establish a connection between the pins 4, 6, 11, 12, 13, 14 of the LCD and the ESP32 pins D13, D12, D14, D27, D26, and D25. Additionally, connect the LCD's 1, 5, and 16 Pins to GND, and its 2, 15, and 5 Pins to VCC. To change the contrast of the LCD, connect a potentiometer with a 10K value to Pin 3 of the display.

Blynk is an application that can operate any Internet of Things (IoT) based application using a smartphone. It is compatible with both Android and iOS smartphones. It gives you the ability to design your own graphical user interface for an internet of things application. On this page, the data from the IoT Energy Meter will be displayed on the Blynk application. Therefore, go to the Google Play Store and get the Blynk application, then download and install it. Downloads are available in the App Store for users of iOS. After the installation is finished, you may launch the application and register by entering your Email id and Password. Create a new project from the dashboard, and for the platform, choose ESP32 & Wifi Connection. Top 10 Alternatives to Blynk IoT platform Particle. AWS IoT. Fogwing IIoT Platform. Google Cloud IoT Core.

Axonize. IBM Watson IoT Platform. Azure IoT Central. Qt. After that, either use the drag-and-drop functionality or create four widgets, after which you will assign the variable based on the code, and finally you will send the authentication code. The authentication code will be mailed to you at the provided address. Make a copy of this verification code. This information will be incorporated into your code. Required Library Installation 1. EmonLib Library Emonlib Library is where the Electricity Energy Meter gets its information from. Continuous Monitoring of Electricity Energy, often known as EmonLib, performs a series of voltage and current measurements at regular intervals of 5 or 10 seconds. After calculating the accurate average of the voltage and current input channels, EemonLib notifies the sketch that the measurements are ready to be read and processed. These measurements include the voltage and all of the current input channels. 2. Blynk Library Blynk is the most widely used Internet of Things platform for connecting any piece of hardware to the cloud, developing applications to control those devices, and maintaining your products that are already deployed at scale. You can link more than 400 different hardware models to the Blynk Cloud using the Blynk Library, which includes Arduino, ESP8266, and ESP32. Testing: IoT Based Electricity Energy Meter using ESP32 & Blynk

The ESP32 Board will make an attempt to connect to the wifi Network utilizing the SSID and Password that are provided. The following information will appear on the LCD Display when it lights up. Initially. After a pause of five seconds, the data from the energy meter is then uploaded to the Blynk application. Both the Serial Monitor and the Blynk application will display the data for you to view and analyze.

As a result, you are able to keep track of how much electricity your home uses with the help of an Internet of Things-based electricity energy meter.