Arduino Library Brings rtl_433 to the ESP32

#homehacks #microcontrollers #homeautomation #ismband #mqtt #rtl_433 #wirelesssensors #hackaday
posted by pod_feeder_v2

Arduino Library Brings Rtl_433 To The ESP32

If you have an RTL-SDR compatible radio there’s an excellent chance you’ve heard of the rtl_433 project, which lets you receive and decode signals from an ever-expanding list of support…

Connecting Commercial 433 MHz Sensors to MQTT and Home Assistant with RTL-SDR

#homehacks #wirelesshacks #433mhz #rtlsdr #rtl_433 #hackaday
posted by pod_feeder_v2

Connecting Commercial 433 MHz Sensors To MQTT And Home Assistant With RTL-SDR

When [Elixir of Progress] was looking at setting up environmental sensors around their home to keep track of temperature, humidity and such, the obvious ideas of using WiFi-connected sensors didn&#…

So I have this Themometer/hygrometer sensor, it emits regularly around 433.9 MHz. (Bresser 5 ch)
I already had an older one like this from another brand, I had no problem reading it with rtl_433.
This new Bresser one is a pain in the ass. There is an older 3 channels version that is already in rtl_433 presets for decoding, but all I get is detection some times only, and when there is detection I get a dat packet with timestamp, SNR infos and such, and no data at all about temperature nor hygrometry.
I didn't found anything on this particular sensor online, I guess they subtly changed the protocol and I have to find the right settings, but I'm surprised rtl_433 does not succeed.
I use a sdr USB dongle for detection, I can see clearly the pulses when the sensor emits, I guess I should start deciphering the modulation from there.

Any thought on this ?

#sensor #temperature #rtl_433 #hack #domoticz #electronics #computing #radio #rf #remote #question

Tuning into Medical Implants with the RTL-SDR

#medicalhacks #radiohacks #medicaldevice #medicalimplant #rtlsdr #rtl_433 #softwaredefinedradio #hackaday
posted by pod_feeder_v2

Tuning Into Medical Implants With The RTL-SDR

With a bit of luck, you’ll live your whole life without needing an implanted medical device. But if you do end up getting the news that your doctor will be installing an active transmitter in…