News for hackers. Stuff that matters.
Re:Show HN: Extend Zigbee sensor range with LoRaWAN by semi-extrinsic on Monday March 18, 2024 @06:23PM (#39750783)
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.

Re:Show HN: Extend Zigbee sensor range with LoRaWAN by logtempo on Monday March 18, 2024 @07:25PM (#39751286)
and LoRa technology was bought only 60 millions by samtec. Sounds really cheap.
Re:Show HN: Extend Zigbee sensor range with LoRaWAN by iforgotpassword on Tuesday March 19, 2024 @10:47AM (#39756252)
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.