[123pie123]

i've just bought a cheap esp32 with a light sensor connected to it. then connected light sensor (ie bluetac) to my electicity meter that pulses every 1/1000 1KW/Hr, it uploads the data to google sheets which graphs the output - works great

I also have another esp32 at my elderly relatives house with a pir sensor connected to it, it's also sending the movement data to a different sheet on the google sheets site, so that i can monitor some sort of movement.

i'm i expecting google to discontinue this service at anytime - yes, but its working for now. you can write and read data from the google sheets via json via the esp32, not very inutitive but doable (and free!!)

[whitehexagon]

nice, I like the simple approach. My old meter only had a rotating disc and it took all my effort to get a sensor connected to my arduino that could detect the black mark on the edge of the disc. There was just enough mem for a http service to allow me to pull that value into my iobridge for remote monitoring.

[gog]

I have a Frient Zigbee device that does the same, but sends data to Home Assistant.

[123pie123]

Home assist looks good, but my requirements was that my elderly relative was being monitored by all my family (ie they're not on my home wifi/lan) hence the data on the movement needed to be on the internet for all to see