I have a device idea, but my limit is at putting a wee arduino device here and there
. I have an idea in my head that's just beyond my technical knowledge. So I'm wondering if its feasible or am I just embarasing myself. Here's the gist:
A 3.3V (I think 50-170mA depending on usage) ESP-01 running off electromagnetic power harvesting from a cable delivering power to a water heater. So a 230V and quite a few Amps. Presumably more than a tea kettle.
The heater turns on, the ESP turns on. ESP could transmit "I'm on" to some IoT device when attached to a cable. Rest is up to imagination!
Question is, is a harverster to power the ESP in real time possible?
So... I have a feeling its a non-feasible idea. How bad is it? Thanks in advance.
Context for the idea if anyone cares: Where I live rentals are common (So no tinkering with the installation) and everyone forgets to turn off the heater. No plugs available. And maybe there's a neat solution with a battery, but in my head a standalone device that you clip onto a power cable and forget about seems elegant.