IoT Based Smart Electricity Energy Meter using ESP32 & Blynk Application

[@saurabhzeple5970]

Shraddha.. your voice is amazing..... I saw this video again and again just for your voice and your project is too excellent...!🙂

[@jephtah737]

Good video, i need to understand something, the GPIO pin of the esp32 is 0 to 3.3v logic level and the voltage transformer is 0 to 5v, so the question is how do you manage the this voltage level incompatibility in the esp32 ADC ?

[@BLOCKsignallingUK]

The two 100k resistors make a voltage divide by 2, so with Vcc at 5V, the mid point of the resistors is 2.5V. The 2.5V is fed to the ADC input via the 100R resistor. The current clamp is across the 100R resistor and when the clamp measures a current it generates a voltage across the 100R resitor, adding (or subtracting depending on the ac cycle) to the 2.5V. So the 2.5V could vary between 1.5V and 3.5V with 100A flowing through the clamp. The 10uF is probably for noise supression. That is my thinking anyway. Let me know if I have misunderstood.

[@mohanvakil4604]

no pin other than ADC (ADC0) can be used to measure analog voltage, as the CT & Voltage transformer has Voltage output(i.e. Analog). As we all know there is only one pin there on NodeMCU ESP8266 to measure analog signals, which is not at all used in the above schematic.

[@BLOCKsignallingUK]

@@mohanvakil4604 The ESP32 is used here.

[@kandesigner]

Very legit question with no answer yet

[@abhijeetbyte]

Hi, what will happens when the board restart does it start Kwh counting from 0 or continue where it stopped ?

[@deepujoy3809]

But not sure if it is considering of power factor because that factor also affects KWh

[@iftahulyusro9825]

I like your video, it's very clear, starting from the pictures of the circuit of each tool, device design, and program. I like it. Always healthy, good people❤

[@akashnagaria9141]

3:00 current sensor 4:02 voltage sensor

[@1_KAIDO]

Thx

[@ashwinamani9076]

May you kindly provide guidance on how to utilize this in a three-phase system?

[@nazmussakib4027]

It's a great project! Do you have any report on this project. I am willing to work on this for future. If you have than do a reply please. Thanks.

[@ManishGpt]

Very informative as you express all the points in a very nice way.

[@HowtoElectronics]

Glad to know you liked it.

[@killua7963]

Thanks for this. Just a doubt. Will this work with 3 phase supply? If not, what should be added to make it work?

[@mohanvakil4604]

The CT clamped on wrong wire in your video, It should be on the wire in series with 'Lamp LOAD', but in video it is wrongly shown on voltage sensor input wire which is parallel to lamp. There fore you can not get the correct readings.

[@innovateyourself9851]

Thank you shraddha for this video. This was the most awaited video ❤️ your efforts are really appreciated ❤️

[@HowtoElectronics]

Bro, its Shraddha not Shweta 😶. Anyway thanks for appreciation.

[@innovateyourself9851]

@@HowtoElectronics ohh my mistake😅

[@yantokajo7253]

@@HowtoElectronics nice , thanks you sis

[@tollerteppich]

Major Mistake, the current sensor must messure the current in the load cable, not in the cable from the voltage sensor XD Good Video and good documentation. with what software has you make the images with shematics ?

[@HowtoElectronics]

Thank you for the feedback and letting me know about the current sensor placement. The schematic has been designed using Fritzing software

[@cedrickokou4378]

Good point dear. I was just searching the comments to see if anyone saw that the current sensor was not properly wired. Thank you. Afterall, very good video, very informative. Thank you @How To Electronics

[@tahakarbhari986]

You provide valuable information. You explain all the things in a clear manner. However, now that Blynk 2.0 software is available, can you please explain the same code for Blynk 2.0.....?

[@HowtoElectronics]

I will soon make another video with Blynk 2.0

[@pelless]

@@HowtoElectronics i will wait...

[@srikumarc]

Excellent project. congratulations How to measure 3 phase power? can you please help?

[@TopN5Tech]

Please add the circuit diagram to lcd display please

[@funlife4u2]

Can we connect other appliances like refrigerator, AC?

[@ranjanpal7217]

Nice video..In video timer (3:58) you have cut one of the wires..How do we know which is the useless wire that we need to cut?

[@HowtoElectronics]

The useless wire is not insulated and has thin bunch of wires. You can easily identify.

[@ranjanpal7217]

@@HowtoElectronics Thanks a lot...Also, is it possible to connect the bare end of cut wire of SCT and that male header pin of ESP32 with a F-F jumper cable directly?

[@HowtoElectronics]

Yes it is possible

[@fathonianwar3131]

How if I want to measure 3 phase current and voltage using that sensor? What pin will I use?

[@aashutosh3721]

First of all Its very nice project and explain every thing in video and website... but i have a question, what was the % accuracy you got in voltage range (200 - 250)V please reply..

[@Atom586]

hi, i have tried, but the current sensor, not have responsive read the current yet, how can i fixed it?

[@masumbiswas7846]

how we reset it after every month? recoding the whole? How to add a reset button?

[@allinonetech9990]

How to setup display

[@leonvilfand2192]

In the video, we can see the USB cable connected to the ESP32 chip. Is this to provide the DC supply for the chip? Could we use the output of ZMPT101B with a basic AC-DC rectifier circuit to power up the ESP32 chip? Or this would affect the measured power quality? Thanks.

[@HowtoElectronics]

Use any 5V DC adapter to power ESp32 board or a usb cable or any Ac to 5V Dc converter. Al of them should work great.

[@simonmasters3295]

Don't go there! The live AC is connected at one end.

[@spoiler407]

i need to buy this project what is the cost ???

[@HafeeezBhutta]

How to connect 16x2 LCD module 12C adapter with esp32??

[@rays.2480]

Very nice. Is there a version of this for split phase use ? 120-0-120 also is there a way for this to be used with DC power for solar use? thank you.

[@jagatheswaranp]

Can you please help me by making this only with current sensor, voltage 240v as standard voltage. By using current sensor alone is it possible to do the project

[@mackb996yt3]

What I am thinking is In void loop Take the analogRead of the current sensor and serial println 240*analogRead

[@simonmasters3295]

Absolutely! That's how the power company does it, surely! 😂

[@chickenz4604]

Very Nice Video! Can you recommend DC current sensor that can measure mA signal? thankyou

[@simonmasters3295]

Haha. I just spent a day trying to find a sufficiently accurate solution. You need to measure mV across a fixed resistance shunt, and an op-amp to boost the mV (which may be negative or positive depending on the direction of current flow) to a signal between 0 - 3.3v that the ESP or Arduino can measure on an analogue input pin. That said my non-invasive meter has a DC voltage measurement, but I don't want to spend all day reading and recording the read-out. I think there is a code error which accounts for the zero kWh readings.

[@dassajityadav5555]

Best ever project seen today by you thanks this is possible for 3 phase supply

[@HowtoElectronics]

Thanks for the appreciation. The current sensor and voltage sensor is only for single phase. For three phase we need to use some other voltage current sensor.

[@dassajityadav5555]

@@HowtoElectronics ok sir seperate 3 we can use for voltage same for current

[@joooooooooooo305]

Can you give all the component's name required for this project?

[@fontemwisdom9353]

What a wonderful project . I what to ask for a code that I use if I add keypad to the system

[@FrancisOsei-n5r]

Nice video,pls can you use the blynk app to control AC

[@mohamedsyahiran9857]

How to calculate the cost of energy consumption?

[@BHUVANESHWARR-u1t]

what is calibration factors here and how you found these values mam?

[@subhankarpradhan4821]

Mam its my humble resquest to share to connection line diagram because i don't understand some connection of this project and also i don' t have any current sensor which you have, i have open connection sensor ... So please connection diagram with all of the component used in diagram .... Please reply mam

[@sunshineroy4668]

I saw an extra variable resister on breadboard circuit ,you did not mentioned it ‘s value. Please kindly mention the value.

[@mosesakpan311]

Oh!! What an excellent project I really love it

[@iiTzHawkeye]

Could this work for industrial machine , to calculate power consumption

[@binisol7353]

Great one. Just to know what capacitor voltage did you use cause it only says 10uf ?

[@HowtoElectronics]

10uF, 16V. Or you can use anything below 100V.

[@tangentmotovlogs840]

Mam can I use HC05 Bluetooth module instead of ESP32

[@TheAhsanxXx]

why your reading are incorrect? how to calibrate to get correct readings

[@Sekhar_Home]

Thanx lady.. for ur sweet voice information

[@ujang0711]

Hi! Thank you for this instructional video. Can you show us how to do the calibration of current and voltage

[@pauljackson2126]

use a 200W and a 60W filament bulb in parallel and measure the current using a multimeter. In my test, it showed that this setup draws 1.03A AC, so hence you can calibrate your current clamp accurately by fiddling the current calibration value accrodingly Now to calibrate the voltage, its a simple task of fideling the calibration value till you hit the sweet spot

[@ujang0711]

@@pauljackson2126 thank you sir for your helpful comment. I appreciate it

[@damyslap]

super.. i very interest. i ask you if can 150A? i very need 150A current. thank you

[@sarthakrupnawar3125]

Can I use different current sensor instead of sct013, will it works

[@rajatsankhla9261]

Will your program measure the power if any phase difference is associated?

[@tubigkarat9456]

How did you calibrate your sensors? I'm a student and I want to know how did you calibrate it. Hope you answer my question, it'll be a huge help for me.

[@HowtoElectronics]

Calibration process is explained in website article

[@420ZEO]

Please tell me what changes do we need to make to measure for Dc voltage less than 50 volts

[@ShreyasSasane-x4f]

can you please drop the link for the Blynk Application please

[@JonatanCastro-secondary]

I would love to understand why and how you pick the resistors and capacitors. Do you have any videos about this?

[@simonmasters3295]

There are plenty of vids that explain this, don't expect to be spoon fed!

[@mohanvakil4604]

Please let me know How you are going to measure analog voltage on GPIO pins(GPIO09 & GPIO10 / SD2 &SD3), however no pin other than ADC (ADC0) can be used to measure analog voltage, as the CT & Voltage transformer has Voltage output(i.e. Analog). As we all know there is only one pin there on NodeMCU ESP8266 to measure analog signals, which is not at all used in the above schematic. Please explain

[@Poshoo]

She is using an ESP32, not an ESP 8266.

[@simonmasters3295]

@Posho Exactly

[@nirmayibollinedi8494]

What all libraries are to be installed to perform this experiment ??

[@sukhpal3y]

i am trying to make the same project. very disappointed because power factor reading are incorrect. there is no way to calibrate power factor reading.

[@digitaldiaries9415]

Please show the complete circuit with LCD screen connection

[@bhagyasanti3491]

Hi sir I want to add alert also to this project

[@muruganm1]

Dear Mam, thank you for sharing the video. I used the code working good but, the voltage is keep on reucing, hence I want to know how to calibrate the voltage range, what i that 83.3 , how to select this value? please help me mam

[@fabioESER]

We change that value until you get an voltage equals to the one you are measuring.

[@simonmasters3295]

What are you both saying? Just use a voltmeter across live and neutral and use that figure in the code! If you want precision retest the mains periodically. Only if your AC is overloaded will it not be compliant with local standards to within 1%. Volts x Amps gives power but variability in volts is restricted in practice to DC circuits.

[@سجادايادعباسالجعيفري]

Is the code below the programming video effective?

[@hritabratakundu6746]

What extra libraries are to be instal in Arduino software

[@Shubham-po2tp]

What about Power factor calculation

[@jyotiranjansingh7341]

Can you help for dc voltage and current

[@johnkg702]

Good day madam Thankyou for an informative viedio Can I use nod mcu insted of esp32 What changes should I make for using with nod mcu Johm

[@firdausjo]

is it possible to use GPIO10 and GPIO9 as analog input?

[@shadowreapermm7548]

What is the name of the type of globe holder used here? I can't find it anywhere.

[@fjlsdjsld]

is your system also do the energy savings or just read the energy? and the application only showing the sensor measurement?

[@MuhammadKamran-n5h]

can we use any other sensor instead of sct 103

[@hk1mini702]

Can you show the circuit diagram of lcd display connection to the node mcu please

[@oviya1317]

The 100 ampere current sensor eill also output 1 Volt at the output???.

[@abusukar]

Hi There is a resistance in the drawing 100E what does it mean ?

[@juanm4768]

how to calibrate in ide arduino the voltages and currents for example that appear 220v and the real current?

[@madhusudan4420]

How to check ct sensor and voltage sensor is working or not ? Please help me

[@d3891]

madam just what i wanted and what a sweet voice you have

[@sajinraj-jy3rf]

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

[@madhusudan4420]

How to make with 3 phase power meter? Please reply 🥺🥺🥺

[@shadowreapermm7548]

it seems like the esp32 wifi range is only up to 200m. Would it be possible to extende the range to cover much greater distances? For instance, would it be possible to use networks that can transfer meter data across an entire country using WiFi, LAN or Mobile Data?

[@simonmasters3295]

Only 200 metres! Jeeze what do you expect for 10 dollar?

[@boopeshkumarprabhakaran]

What about for 3 phase power supply?

[@Lisalisa-kx9fw]

This is really useful. Thank you so much 😊😊😊 for this video.

[@gocchiase8785]

you make one using hsts016l sensor

[@meridianzipagan8353]

May i ask what board specifically did you choose in Arduino ide? Thank you

[@simonmasters3295]

ESP32 surely, but you should select the board you want to use.

[@MohitKumar-dl4sh]

Can you tell me you to do this with new blynk app

[@bongmacambodia1031]

Love your voice sounds beautiful sound 🤩🤩

[@prajwalithape4751]

can you provide report on this project

[@sanjayraaj8167]

Can we measure power consumption of seperate devices in home seperately and overall power consumption cumulatively?

[@HowtoElectronics]

Yes you can either from the hardware end or through software

[@063himanshumishra4]

Can we use this to measure energy of more than one appliance? If so than how we can do that?

[@simonmasters3295]

Put the current sensor around the right common wire (Don't use two wires). Or measure two places and add the result. Think about what you are asking...

[@deepujoy3809]

Wow! simply explained👍

[@bipinchauhan9376]

very helpful video. THANK U

[@erienortiz7959]

Excelente proyecto. ¿El código fuente cambia si utilizo una tarjeta Wemos ESP32 D1 R32?.

[@RicardoRamirez-xn6pk]

How can i make it work without the amperemeter. Also, there is a big diference between the new blynk app and the shown on the video, can you help me throught this?

[@simonmasters3295]

No. You need to measure the amps and the elapsed time. You cannot get to amps from resistance because resistance is also varying with loads.

[@rahulk3209]

Can u share the block diagram of this?

[@santiagocastano3717]

Can you leave the QR code of the project in blynk here, please?

[@simonmasters3295]

Would that not be unique to your project?

[@Gurram.Nandhini]

Sister i want full details and documentataion of this project plz😢

[@simonmasters3295]

Follow the link. It's all there

[@geraldosocorro1186]

Please could you tell me which version of Blynk was used in this project and which other versions of brink this project will be compatible with. Thanks.

[@HowtoElectronics]

This was done with old blynk app. The new blynk app is different from the old one.

[@francescoifi6676]

Hi. Could you help me? I have small power surges ie VRMS and IRMS.It mostly happens to me when I turn on the blink application How can I fix it. Thanks in advance.

[@sreetechnologys]

What values of resisters should I use when using SCT013 30A/1V CURRENT SENSOR

[@pauljackson2126]

just go with the similar values, then calibrate accordingly

[@Arrobosys]

How much volt capacitor is this. 250v 10uf capacitor is ok for it

[@HowtoElectronics]

Its for 5V device. You can use 10uF, 16V or 25V.

[@hritabratakundu6746]

Mam is that Aurdino coding

[@adityakshirsagar8100]

Thank you for this video 😀 can you help me with that coding

[@linassapnagis2174]

is this posible use more than 1 CT, more channels, than one?

[@simonmasters3295]

With I2C, yes

[@MuhammadBilal-hz4qt]

i like ur video and downloaded it for further knowledge

[@mosesakpan311]

Pls mam help me, I need fully write up for the project, I am doing the same project in school pls help me .