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mandulaj / PZEM-004T-v30

Arduino library for the Updated PZEM-004T v3.0 Power and Energy meter
MIT License
256 stars 108 forks source link

PZEM-004T on big electronics device #82

Closed Albar0o0 closed 2 years ago

Albar0o0 commented 2 years ago

asking for my project, does PZEM-004T can be used to measure big electronic devices? for example, on a refrigerator, fan, or TV screen..? if it can, please tell me how to do it, or maybe give me a link to any papers or youtube videos, or anything that might help.

Thanks!

mandulaj commented 2 years ago

Hey, Yes the PZEM-004T can measure large devices. In fact, that is exactly what it is designed to do. However, I am not sure that it is the best device for you to use. You will have to wire 230V AC power which, if you don't know what you are doing, can be extremely dangerous! Here is a basic video I found on Youtube https://www.youtube.com/watch?v=3kayhWvy6GA

But I am gong to repeat it again: Use the PZEMs at your own risk only if you have at least a basic understanding of electricity. The module does not usually come with an insulating box and exposes lethal voltage which will kill you if you touch it where you shouldn't.

Albar0o0 commented 2 years ago

do you have any link on PZEM used to measure big electronic devices ?

mandulaj commented 2 years ago

Have you watched the video? II don't have a link to a tutorial specifically for the PZEM module. But I am sure the internet is full of useful resources. Try learning something about electricity, then look for how to splice a current probe into the power cable of your appliance. The keywords that will probably help you are: "safety around AC", "current transformers" But using the PZEM device with larger electronic equipment is not much different from using it for something like a small lightbulb. Just make sure to use sufficiently thick conductors.

I am afraid you will have to do some of your own research.

For a start, take a look at this wiring diagram:

You just replace the load (the lightbulb) with your fridge or TV power cable. How to do that should not be difficult for you to figure out.

Albar0o0 commented 2 years ago

oh yeah, ive watched it, i do have the wiring diagram too and understand what to connect, it just that I have concern with this sentence from your reply

"The module does not usually come with an insulating box and exposes lethal voltage which will kill you if you touch it where you shouldn't."

like, maybe I need other tools or something to add to the wiring diagram so that it won't kill me

I've been looking for pzem projects with big electronic devices but can't seem to find any or I'm not looking deeper enough, ill try using the keywords u gave me later, thanks for replying man

mandulaj commented 2 years ago

If you buy the version with plastic cover (like the one in the video) it should be relatively safe. If you know the basics, only connect wires when it's not powered and don't do anything stupid you should be ok. But I always say this warning explicitly because unfortunately 220V can be deadly of not handled with respect. GreatScott has some useful videos about electricity basics https://www.youtube.com/c/greatscottlab so would start there.