Read Only Current

[ChEfstr]

Hello to everyone,

I was wondering if there is a hack to power the chip from something other than an 220 V AC Power Supply in order to read only current.

For my application i dont have access to AC Power and i want to use the board just for reading current.

Thanks,
Chris

[Nismonx]

Can you elaborate about the application you are planning to use?
To generate current you'll need some sort of pressure either AC or DC. PZEM-004 won't work with dc, you'll better off looking for a Shunt type ammeter.

If dealing with AC the PZEM should work with as little as 80vac but don't quote me on that as it's been a while.

[ChEfstr]

Thanks for the fast response!

Yes it's a DC application. I just had the PZEM-004 lying around and i thought i could maybe make it work, plus the serial connection helps as i want to have multiple amp sensors on the same ESP32. Maybe I will incorporate some kind of inverter or just go with another type of amp meter as you suggested, probably a current transformer.

[Nismonx]

PZEM-017 is your best bet as it is designed for DC.

[sergiocntr]

or acs712 maybe?