I’ve been using RTL_433 with a SDR for a few years now with modest success. This setup will detect and identify a variety of 433Mhz sensor readings. The output is piped to a MQTT broker and from there the readings are presented graphically. At first this was done on a Raspberry Pi running a bash script on startup, with the following one liner command. rtl_433 -F json | mosquitto_pub -h <MQTT-Broker> -i RTL_433 -l -t RTL_433/SDR_FEED Unpredictably, problems would arise … Continue reading Wemos 433 Mhz RF Receiver