IoT Smart Electricity Energy Meter using ESP32 & Blynk 2.0

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𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻:
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.
𝗦𝗼𝘂𝗿𝗰𝗲 𝗖𝗼𝗱𝗲 & 𝗪𝗿𝗶𝘁𝘁𝗲𝗻 𝗧𝘂𝘁𝗼𝗿𝗶𝗮𝗹: how2electronics.com/iot-smart...
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[@CrazyCoupleDIY]

Well done, nice and easy one

[@MrAlsan]

This is Awesome project 👍

[@mehmoodrec]

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

[@binisol7353]

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

[@srikumarc]

Can you make the same project for 3 phase power monitoring?

[@davidcromapix9083]

Thanks for sharing

[@vedanthlahoti3741]

Can you share where did you make circuit simulation

[@inuzuka_6934]

Uhm what are the jumper cables did u use??

[@rafirabbanifirdaus5028]

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

[@juandanielvelezmunoz2667]

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

[@asyraafazhan136]

do you mind sharing the pub design for this 2.0 version

[@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?

[@beastscientist]

yes the esp32 is having the eeprom of 512bytes so it can also save things

[@naveedansari9842]

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

[@mohamedsyahiran9857]

Can i get the exact component details for the bulb and bulb holder? I want to purchase

[@lavanyayerguntala8977]

How to send current measure to email use in ESP32 board

[@Radioknowhow-if7mz]

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

[@supercorn5607]

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

[@mrz2245]

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

[@toksgagik9111]

di you fix the problem?? i have the same issue

[@sajinraj-jy3rf]

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

[@beastscientist]

yes buyt it is costly

[@Engineerswarup]

Pls tell us that how to connect blynk app after 4 virtual variable pin set and code to get output

[@beastscientist]

get the blink authiticating code

[@geraldosocorro1186]

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

[@HowtoElectronics]

Hi there was minor bug in the code. I fixed it and updated few hours ago. Try the new code now, it works.

[@geraldosocorro1186]

@@HowtoElectronics OK! I will test it, thank you very much. 👏

[@selvaraja0147]

Mam i have esp 32 V1, but you are used V4. Will any problem come with V1?

[@beastscientist]

no just change an the code

[@allinonetech9990]

How to skip iot coding part I don't want to send data to blink server. I only want data to display on display. Anyone help me .

[@sidharthsharma1008]

can we use ACS712 current sensor?

[@rauloliveira50]

Did you it ? I'm trying here but I failed

[@bayazidkhanburki4158]

Can we add the a module of showing a real time price occuring while using the power electricity

[@HowtoElectronics]

Check the latest video. Its there.

[@charlesdias2857]

olá, ótimo projeto, vc pode me ajudar, como eu poderia colocar uma linha de comando para calcular os gastos de energia? aproveitando o mesmo programa.

[@jephtah737]

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

[@beastscientist]

yes just remove the current part

[@008sarathkismatwaale5]

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

[@theochub]

Any where in the world if esp32 connect with wifi

[@subhrajitghosh3314]

Vro how can I get auth code

[@MANOJ_BHASKAR_]

Hie sir/ma'am Ur work is too good I need help from ur side ma'am From last one month I trying to connect esp32/esp8266 to blynk but it is not connecting but it is connecting to wifi so please help me out Monday I will be having project review

[@pulendranmathi1874]

hi, So i want to display the power consumption price also, with time to time varying the unit price of Government updates. so how can i add this part in the code. please let me know. Because i want to do the project in campus. And also i want connect with this solar and want to calculate that power consumption also. So please help me

[@VamshiKrishna-zh3zl]

Have you done that project bro?

[@0124akash]

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

[@shaswatsingh4656]

I am making Same project but on Home Assistant not using blynk 2.0 because of free version support max 2 devices

[@beastscientist]

no you can add upto 10 devices

[@keeeerthan]

I have doubt on the resistor value u said 10k and 100ohm but in fig 100e is there

[@HowtoElectronics]

100e and 100ohm are same thing.

[@beastscientist]

its 2 10k and one 22 ohm

[@peteranuforo8847]

How do you install ESP32 dev board module

[@beastscientist]

ide

[@manthangujar1030]

eepromstate(); was not declared in scope showing an error while compiling

[@HowtoElectronics]

I have updated the code and fixed the issue. You can try with new code now.

[@nishanenwani8043]

How can we fix board error while compiling the code on Arduino IDE?

[@beastscientist]

can you tell me what error you are getting

[@nishanenwani8043]

code is no compiling for selected board ARDUINO UNO@@beastscientist

[@kabitachand2578]

👍

[@muhammadshoaib3796]

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

[@HowtoElectronics]

With this current code, you cannot. You may need some modifications in the code to reset the Kwh value using an external push button.

[@muhammadshoaib3796]

Can You Guide Me Mam?

[@mintamerinjacob5114]

How to power thr circuit without using usb cable

[@beastscientist]

just use the power pins

[@dhananjayamurthyk8214]

How to use it for 3 ph energy

[@beastscientist]

use one phase and do the changes according to your reaquirment an the code for more information contacat me

[@user-qq8qg6ev1k]

A circuit to prevent power pumping into the network with an on grid system

[@beastscientist]

more explanation need for better asistance

[@sudhakars8703]

Please make an video for oxygen monitoring system for home with oxygen sensor

[@HowtoElectronics]

Please share the link for buying oxygen sensor.

[@beastscientist]

its easy i alreday had it

[@zeroman6860]

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

[@user-dz7sy8tf4o]

Hello

[@sifoslimeni3826]

Why is irms equal to zero?

[@toksgagik9111]

di you fix the problem?? i have the same issue

[@falconzod]

Mam i need you help to setup esp32 file

[@beastscientist]

what file little explanation

[@omaramin3600]

why do my lcd doesnt output anything

[@HowtoElectronics]

Adjust the contrast using the potentiometer at the back of the display. Or it could be the I2C address issues, the LCD display has 2 i2c address, please check and modify the i2c address in code.

[@nikhiltm1711]

​@@HowtoElectronics ma'am can you provide the i2c library link

[@angelhuerta4559]

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.

[@supercorn5607]

but are the connections correct?

[@angelhuerta4559]

@@supercorn5607 Yes the schematic shown in the video is correct

[@chennaicraft7556]

Awesome project but power is not accurate

[@yougetchandan]

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

[@Suryaa11105]

Did you resolve it?

[@yougetchandan]

@@Suryaa11105 i used another laptop...and i didn't face the issue 🙂

[@Suryaa11105]

@@yougetchandan is this working properly or did you face any issues..

[@arinjain2671]

Driver issue

[@malikumair5755]

Ap Ki mail id mil skte ha programming K hawale se bat krne ha

[@malikumair5755]

Reminder

[@HowtoElectronics]

[e-mail]

[@ROHAN-PATIL]

its clearly not working why you are wasting other people time i made this same project it doesn't calculate apms power in your vid its clear that its not working put 10w load bulb and its not reflating in app SHOW PROOF WITH HIGH LOAD

[@jobertsor5112]

No detail explanation in programming