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Using an RTL-SDR and RTL_433 to Decode Various Devices

December 25, 2013 admin

Over on his blog, Gough Lui has posted about his experiences with decoding various ASK/OOK devices on the unlicenced 433 MHz ISM band using an RTL-SDR and the command line program rtl_433.

Gough shows how he was able to receive and decode the data from an Aldi weather station device and a wireless doorbell transmitter. He also was able to modify the rtl_433 code slightly to produce a CSV log file of the temperatures that were received and decoded from the weather station.

rtl_433 output of the weather station
rtl_433 output of the weather station

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