[semi-extrinsic]

The ability of LoRaWAN to transmit through almost anything is black magic. It works reliably down to 20 dB below the noise floor at maximum spreading factor. You can still get sporadic operation at -30 dB SNR.

We once tested putting sensors 8ft under ground, down a manhole for the water mains. They kept on working through dirt, steel and concrete even with the manhole cover in place.

[iforgotpassword]

Reminds me of the hoymiles inverter for solar panels. I'm using opendtu to read the data. The protocol is proprietary and was reverse engineered, I have no idea what it is, but the communication works from 1st to 5th floor. I don't even see the wifi beacons on the 3rd anymore.

[logtempo]

and LoRa technology was bought only 60 millions by samtec. Sounds really cheap.