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No the current sensor can also measure dc current but voltage sensor can't. Also need to change current and voltage parameters in the code section for both current and voltage.

Use 5 volt power supply to power all the components and also use a DC-DC buck converter module for powering the esp32. Just input with 5v supply to the buck converter and sorted the 3.3v pin of it and you will get 3.3v power as output. So connect it to esp32. But if you don't use esp32 for continuous power on then you can use 5 v power supply as the input voltage. It doesn't affect so much.

@ so the 3v3 in the esp32 can power the ACS712? to my situation it doesn’t why does it work on yours?

No 3v3 can't power the ACS712. 3v3 can only power esp32 for safety reasons. rest of the all components will need 5v supply.

5v 1 ampere is enough for powering whole system

Thank you so much, last question what is your exact esp32 model cause i dont want to buy wrong one

@red181 ESP32S or ESP WOORM 32. Any of them you can use

Then you connect wrong wires or your i2c module is damaged. Connect SDA pin21 and SCL to pin22

Esp32 has inbuilt EEPROM

Thank you so much for fast reply

No need to upload emonlib library code. This is only for internal coding purpose. Just upload esp32 code only

Thank you

No as it is working only for energy monitoring purpose. No home automation system is not included in it so you can't schedule bulb timer.

Connect bulb and current sensor in series with mains power supply

@@electro_gadget80 isn't it dc current sensor and u are using with ac supply

@@VikramKumar-ly9ou it can sense both AC and DC current.

2 yellow cables connected to voltage sensor are directly connected to ac mains power supply (live and neutral section). As it senses the voltage only.

You can use but no need. Connect one 5 volt adaptor instead.

Bulb is connected to current sensor in series with mains power supply. And voltage sensor is directly connected to mains power supply.

Same code will apply for sct013 also.

Did you insert D34 as current sensor data and D35 as a voltage sensor? Also check the vcc and ground pins voltage of both the sensors'. Data errors also occur due to power loose connection.

No, cause esp8266 has only single analog pin but here we have two analog sensors.

i already try but lcd show value voltage and current without load connected to ac supply

Check the esp32 pin no connected voltage and current sensor and in the code section where you mentioned the same pin for these sensor

​@@electro_gadget80if using esp32 need to use voltage divider for current sensor acs712?

Bulb is directly connected to ac mains power supply with the current sensor in series. And the voltage sensor is directly connected to ac mains power supply.

AC load and current sensor are in series with mains power supply which is shown in the circuit diagram, link in the description.

For that project you need to connect with pc for changing these credentials, but using blynk edgent with the code, you can change your credentials with the blynk app.

And my bulb is also not glowing I have checked all the connections. I have connected it with my homes socket

@@electro_gadget80bro pls reply

Then decrease or increase the current calibration value from the source code according to your multimeter.

​@@electro_gadget80bro i want using plug socket and measured current of any load, the current dont change.. do you have any suggestion

​​@@electro_gadget80i really need your help

@muhdsybl if you want to keep the current unchanged, you need to specify the current value as static in the code section.

Between the relay's one terminal and bulb's one terminal.

​​@@electro_gadget80 we have used 5v normal relay instead of 5v solid state relay is it ok?

​@@electro_gadget80 other terminal of bulb and relay are connected where????

​@@electro_gadget80 I not get this can u give detailed explanation of how u have given input supply to the ckt have u given it to both terminal of voltage sensor ie L And N of voltage sensor

@paraskhole6786 no issue same

If you can power the esp32 and other components with any 5 volt supply or via usb cable then it will not require this ac to dc adopter. I used it because of its compact look. And the bulb connection as load that connect between acs712 sensor's one terminal and ac power supply's one wire.

Check it to the description link mentioned. And there you will find the circuit diagram, click on the picture for a clear image. Bulb connection also mentioned on it.

@@electro_gadget80 my esp32 is not showing the port what can be the problem

@manideepn1359 may be your pc usb driver for Arduino IDE is outdated or the usb cable is damaged.

In the description

Did you check out the circuit diagrams from the description link below?

Go to preference from file the paste this url into the blank space "espressif.github.io/arduino-esp32/package_esp32_index.json" then search for esp32 from board manager under tools section

All the steps are explained in detail in the article which is in the description

Check out the video description link

Check out the description