PZEM-004T V3.0 (Raspberry Pi) 

I'm connecting a PZEM-004T to my off grid cabin power system. This was exactly what I needed!

Congrats! Well done!

Thanks for the video. I waas glad to see how to handle the raw data from the serial interface with Python. FYI an incandescent bulb may be a better load. Your soldering iron has a thermostatic switch that turns the power on and off depending on the temperature of the iron. So it will vary quite a bit. That's why the wattage changes from around 60w initially to much less later; probably the thermostat on the iron reached temperature and turned the current off. A dumb 60W incandescent bulb would be a bit more stable to do current and power testing.

Perhaps the coil isn't sensitive enough for the low currents you were measuring-might try comparing results using something that would draw significantly more current?

What kind of soldering iron pulls 14 watts? Might be much more interesting if it were turned on! Does it deactivate when holstered?

can I connect it to blynk for a GUI? And saving the data in a spreadsheet? or just view the data that is provided?

Could you make a Tutorial adding a solar panel to calc W/m2

Any ideas on how to attach multiple PZEMs to the same serial? i Understand these are addressable but looking for some guidance. I have seen lots of ideas and code for esp boards but want to do it with a PI so that i can store data locally on the pi. I also plan to use the pi to read other meters in the distribution box, so will be convenient. overall, i plan to read 6 Pzems, not sure if that brings any challenges and ideally from the same usb to serial. I am using 3 pzems with the esp board but the data is not reliable due to intermittent wifi issues etc.

GREAT CONTENT!!!!!!!!!! LOVE YOUR WORK AND IT'S SO INSPIRING!!! PLEASE MAKE A VIDEO EXPLAINING NRF24 WITH RASPBERRY PI!!!!!! PLEASE!!!! I'M STUCK

Can I get flowchart for this program

How to reset "energy_Wh" in python code.