Re:How to Measure Indoor Air Quality with a Raspberry Pi, Ru...
by stevekemp on Thursday August 08, 2019 @01:26AM
(#20642082)
I bought a bunch of wireless temperature/humidity sensors from AliExpress - they broadcast their readings once a minute via a small 433Mhz radio-transmitter.
Completely standalone, no WiFi, or other concerns. And because they're battery powered I think they're safe enough in the sauna!
From there I can get the readings via a USB-attached SDR dongle, and also sniff the radio-transmissions via a WiFi connected ESP8266 device with a radio-receiver.
Completely standalone, no WiFi, or other concerns. And because they're battery powered I think they're safe enough in the sauna!
From there I can get the readings via a USB-attached SDR dongle, and also sniff the radio-transmissions via a WiFi connected ESP8266 device with a radio-receiver.