Hello heterodain have you log inverter to display

[cent0]

Do You have detail for protocol inverter -->> display
I have make one code but working only in the Night.
Have any help thank s
In this 5 video have detail for energy monitor with esp8266
Thank you for cooperation
https://youtube.com/playlist?list=PLZ3vi91zc4H4XtnGrvB-D_FBrmiy8P_Ua

[heterodain]

watched 5 videos. Very interesting content.
Unfortunately, I do not have detail of protocol inverter --> display.

[cent0]

I not have used protocol for read
I have only capture byte and convert and print
But have any problem in the day.
If connect in parallel ch3406 for read data.
The ch3406 read fine the data. But esp8266 have error in the day. In the Night all work fine
Only my supposition the voltage for uart need optoisulator?

Thank you
If have time for me please for little help

[heterodain]

If the voltage levels are different on the UART, inserting a Logic Level Converter or Photo coupler might solve the problem.

I have a similar experience.
I inserted a Logic Level Converter because the voltage level was different between 5V and 3.3V for RS485 communication using ESP32.
It did not work well but...
Finally, I decided to use CH340x or CP210x.

[cent0]

The board display have optocupler. This day have connected the RX direct to mcu and have same error.

This is my code thanks
https://github.com/cent0/Extend-wired-system-serial-uart-to-wifi-gtil2-log-display/tree/main

[heterodain]

Software Serial may not have stable high speed communication, so I would try using Hardware Serial.
But 9600 bps seems like it would be fine.

esp8266 has only one Hardware Serial, it would be troublesome to use USB.