PZEM-004T V4.0

[Kristie-Kristie]

I tried using this library with the V4 of the PZEM-004T. I was only able to get voltage readings. You had previously stated that the library should work with V4. Should I change my code. I tried the same code with a V3 and the PZEM-004T worked as it should.

[mandulaj]

Can you check if this fork works for you? https://github.com/Neubolt/PZEM-004T-v4.0-Bidirectional

[Kristie-Kristie]

HI! Thanks so much for the reply. The library doesn't work for me.

Edit/Update: Changed some things - working well so far thanks!

[barman75]

I've got an issue with a new V4.0 and V3.0 connected in parallel to Uno (5V) via SoftwareSerial
V4.0 and V3.0 in parallel - V4.0 works fine, V3.0 is not.
V3.0 and V3.0 in parallel - both works fine simultaneously.
The Neubolt library did not help, I have not getting data from both with that lib.
Any suggestions?
In any case, V4.0 hardware suits better for reading the modified sinus (square wave, simistor dimmered wave, etc) since it has a new AC-DC psu which has no overheating problems.

[MrJoiny]

Is the Neubolt library working?
Can't test it atm, since I don't have physical access to my PZEMs.

If I try to send
01:03:01:00:00:0B:05:F1
(which is what I get from the code.)
I get an error response with Illegal address
01:83:02:C0:F1

Could someone please confirm if the Neubolt library is working and what it is sending to retrieve the negative energy and the apparent power.

[barman75]

I've managed to work two V04 at the same time, adding zener diodes to TX output and some code.
#141 (comment)