Hi, is it possible to create 3 separate single outlet power meter using a single code/sketch? If possible, what libraries can I use?

Projects Programming
1

I am currently working on a project. I am planning to use ESP32 and 2 sensors (ZMPT101b and ACS712). Thank you for the response!

2

There is no specific library to use with "3 separate power meters". Start from using a single module with its library, than add the second, manage them to work together... and so on

1 Like
3

Not directly an answer to your question (it’s possible is the answer) but thought you could make good use of
https://openenergymonitor.org/
and info available over there

1 Like
4

Yes it should be possible.

You will need 3 x ACS712, one for each channel, but you will probably get away with only using 1 x ZMPT101b, as the voltage seen by each appliance should be the same.

1 Like
5

I am currently working on a project. I am creating a 3 single outlet power meters using ESP32. The outlets are connected in a parallel and is powered using a single plug (in a 220V AC outlet). I noticed that when a device (the one being measured) is connected in one of the three outlet, the measurements are overlapping with other current sensor measurements.

6

I have merged your topics due to them having too much overlap on the same subject matter @kyle00001.

In the future, please only create one topic for each distinct subject matter and be careful not to cause them to converge into parallel discussions.

The reason is that generating multiple threads on the same subject matter can waste the time of the people trying to help. Someone might spend a lot of time investigating and writing a detailed answer on one topic, without knowing that someone else already did the same in the other topic.

Thanks in advance for your cooperation.

7

The ACS712 is a ratiometric 5volt-only sensor, and won't work well with a 3.3volt processor like the ESP32. Output of the ACS must be reduced to 3.3volt, and current will also depend on voltage variations of the ESP supply.
Current transformers could be a safer choice than the ACS712. The boards and the ACS are not really designed for 230volt mains.
Leo..

8

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.