IoT Smart Electricity Energy Meter using ESP32 & Blynk 2.0

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Almost a year and a half ago, I developed an Energy Meter project using the Blynk application. For that, I used the SCT-013 Current Sensor and the ZMPT101B Voltage Sensor. These sensors were pretty accurate in reading the current value, voltage value, as well as power, and total energy consumed. However, the Blynk application recently underwent an update, rendering it unusable for this project. As a result, I decided to rebuild the project using the newly updated Blynk 2.0 application.

In this project, we will build an IoT-based Smart Electricity Energy Meter using the ESP32 and the newly updated Blynk 2.0 application. By using the best current sensor SCT-013 and voltage sensor ZMPT101B, we can measure voltage, current, power, and total energy consumed in kWh. The readings will be sent to the Blynk 2.0 application and displayed on a dashboard accessible from any location. In case of power outages, the energy meter data will be stored in the ESP32’s EEPROM memory, thus ensuring that the readings are not lost and are continuous. Let's start our project to automate electricity consumption monitoring.

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[angelhuerta]

For everyone whos checking out this project, be aware of the following:

1.The code used in the linked webpage is masking APPARENT POWER into REAL POWER and thats completely wrong.
2. Whats worse is that the energy calculation in the code takes apparent power as real power sooo guess what? the energy calculation is also wrong.
3. The ZMPT module introduces a phase shift in the voltage signal. This is because on the secondary side the signal is fed into an amplifier. This doesnt affect RMS voltage readings at all but it completely screws up the REAL POWER calculation.

Im not saying this is a bad project at all, it works pretty well to get VRMS, IRMS and Apparent Power readings however forget about calculating real power, power factor and energy because as I said earlier, this is screwed up by the ZMPT module itself.. You may try to correct that phase shift by software but I cant guarantee you will get decent accuracy in the readings. If you want to calculate real power then you should use a crude step-down transformer.

[mehmoodrec]

hi nice project but can we configure it to read power and energy in bidirectional mode.

[binisol]

Nice One but whats the Capacitor voltage you used cause it only shows the 10uf on the circuit???

[Radioknowhow-ifmz]

hello guys i just build this project but i got some confusion when i add blynk function my serial monitor print zero but when i remove all the blynk function it read voltage and current all good where did i do wrong guys ....the issue is when i add blynk to send those data to blynk app it print all zero value but when i only do without blynk it work fine... any help guys i just stack here

[akash]

Wifi connected nahi hoga to LCD me parameters nahi show honge.

[vedanthlahoti]

Can you share where did you make circuit simulation

[supercorn]

Hello, can I please have the file for your schematic and pcb show in the video?

[juandanielvelezmunoz]

how is it, with three phases, ? that is to say with 3 three current sensors and three voltage

[lavanyayerguntala]

How to send current measure to email use in ESP32 board

[MauriceArwa]

let's assume the wifi is faulty but there is power, does it have local (Offline Storage) that can be used during this time, so that when the wifi is back on it just syncs up? or does it just resume from where it lost connection?

[naveedansari]

i am facing an issue i compile this program and upload ESP32 ardunio module.Iused lcd 20*4 but nothing show in display of lcd . Any one suggest me

[sajinraj-jyrf]

Sir, to measure the voltage of each device connected to nodemcuesp8266 is possible ?

[sarathkismatwaale]

Mam how much maximum distance we can see parameter value mam..

[rafirabbanifirdaus]

Is it permissible to change the calibration factor in the code?
this line I mean:
#define vCalibration 200
#define currCalibration 0.50

[mrz]

hi, i need help. i only connect the esp32. but the voltage still reading at 5V. but i dont connect any voltage and current sensor

[yougetchandan]

A fatal error occurred: Failed to connect to ESP32: No serial data received.

[muhammadshoaib]

can i reset the values of KWh by just click on esp32 reset button?

[jephtah]

ma'am can use the Emonlib to measure only voltage, i dont need the current

[geraldosocorro]

Hello. I am not able to find the correct EEPROM library for the ESP32, I tried several, could you help me. Please.

[zeroman]

please modify the code....still it is not working...code is complied and uploaded but the result is not coming....after the power cut it is still starts from zero itself