Pzem-004t via EspEasy

[dynamicdave]

I have a PZEM-004T connected to a Wemos D1 Mini (ESP8266) flashed with Tasmota that reports readings via MQTT to Node-RED. Here's a link to a thread about interfacing the device.

Need to write one function that will return 3 values

This is the module I used PZEM-04 0-100A from BangGood with a serial connection to Wemos. I cut the USB connector off the end of the lead and fed the Tx and Rx signals through level shifters as the PZEM-04 used 5V logic and the Wemos is 3v3. It took quite a lot of trail-and-error to find the best pins to use on the Wemos with Tasmota. I can draw out the circuit/schematic over the weekend if you need it.

Couple of things to note are the need for level shifters and make sure Tx & Rx are connected correctly.
i.e. Tx connects to Rx, and Rx to Tx