3 ms·
I do this with a cheap (~$20) USB RTL-SDR – no Arduino or custom electronics necessary. Of course, I only use it to monitor my own energy usage (electricity and
by dperfect 5y ago
I do this with a cheap (~$20) USB RTL-SDR – no Arduino or custom electronics necessary. Of course, I only use it to monitor my own energy usage (electricity and gas) using rtlamr[1] and a script that periodically sends the data to InfluxDB, then displayed using Grafana.
The result is a smart home energy monitor that doesn't require any clamps near the electrical panel, and it exactly matches the usage for which I'll be billed.
[1] https://github.com/bemasher/rtlamr https://github.com/bemasher/rtlamr
- flatiron 5y agoCrazy how easy that is. I bet within a year we hear about criminals using something like this to know when people leave their house for extended periods.
- sokoloff 5y agoThat repo is over 7 years old. It’s exploitable, but I’m pretty convinced that this info has been out for many years. https://hackaday.com/2014/02/25/using-sdr-to-read-your-smart-meter/ https://hackaday.com/2014/02/25/using-sdr-to-read-your-smart...
- wolrah 5y agoCan confirm, I was playing with this in my neighborhood years ago. I'm pretty sure it was the gas meters I was seeing.