rsaeon
Patron
I made something similar a few months ago but went with a wifi connected approach since I'd like to set up logging and graphs someday. It's an ESP-01 running tasmota wired to a temperature sensor and a Peacefair PZEM-004t module that's been modified to make it more electrically safe as described in this video:
I haven't setup anything on the software side yet so all I have now is the tasmota webpage:
this is attached to a stabilizer, wired to its input (this is a crude prototype, a proof of concept)
Total cost was around Rs 1000: 750 for the pzem004t (robu.in), 150 for the wifi module (amazon), 80 for the enclosure (probots.co.in) plus something for a 3.3v buck converter and a basic 5v charger that was zip tied to the peacefair module.
And since it's a wifi device that responds to pings, I set up a simple one-ping-every-minute script to get power outage/restored alerts through a bot on Telegram:
I finally implemented this after mentioning it about two years ago: https://techenclave.com/threads/wtb-sinewave-ups-inverter-so-need-suggestions.198174/ @rdst_1
I haven't setup anything on the software side yet so all I have now is the tasmota webpage:
this is attached to a stabilizer, wired to its input (this is a crude prototype, a proof of concept)
Total cost was around Rs 1000: 750 for the pzem004t (robu.in), 150 for the wifi module (amazon), 80 for the enclosure (probots.co.in) plus something for a 3.3v buck converter and a basic 5v charger that was zip tied to the peacefair module.
And since it's a wifi device that responds to pings, I set up a simple one-ping-every-minute script to get power outage/restored alerts through a bot on Telegram:
I finally implemented this after mentioning it about two years ago: https://techenclave.com/threads/wtb-sinewave-ups-inverter-so-need-suggestions.198174/ @rdst_1
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