pcornill

Thanks @krikk, I learned a lot from this post but unfortunately, Espurna doesn't support the MCU V9821 so I had to use Tasmota. Thx

Another possible solution with ZMAI-90 but again with Tasmota: https://www.creationfactory.co/2019/12/zmai-90-din-rail-meterswitch-more.html

Hello, I have the same issue. I just upgraded from Espurna 1.14.2 to 1.15.0 and all measurements except Voltage are set to zero; even when the switch is ON and...

It is version 1.15.0-dev. And as I said "all measurements except Voltage are set to zero" 

I tried powering off but I do not know how to upload OTA and erase_all (I do not have easy access to serial upload)