I actually copied codes from several sides until it worked. it is a very crude and imperfect programming. I attach the code I use if someone wants to use it and better if they fix it, use it with espeasy 1.4 and mega espaesy. _P099_PZEM.ino //#########################################################...

Hello,
for the connection I did it directly, but with 3.3v and I put a resistance in parallel within the pzem, the idea is that the optocoupler is running with 3.3v and not with 5v as it comes originally.
Now I'm not at home, I can barely get a picture of the change I made.

Hello,

I have a wemos connected to a pzem running a few months ago, this sends the information to a PC with domoticz who keeps track of these variables.

Hello everyone.

I am new to this forum, I like hobby electronics and I have experimented with ESP-12, currently I have worked some in my house like domotica, registering electric parameters and managing some lights.