Digitech XC0434 Wireless Transmission

[Michael Jackson]

I recently was gifted this colour LCD weather station to replace an old FineOffset whos console had died.

I had used weewx for a while using the USB output from the FineOffset console so I'm familiar with the weewx system.  I had also used the SDR driver with rtl_433 to collect data after the console had died.

With the new Digitech the console has no USB so I've been hunting for the wireless link around 917MHz and located a transmission that rtl_433 could decode..... to a point.

I can see most sensors such as temperature and wind but I don't see any rainfall data being sent wirelessly.  Here's the output of rtl_433:

{"time" : "2021-04-14 22:48:45", "model" : "Bresser-6in1", "id" : 432013605, "channel" : 0, "battery_ok" : 1, "temperature_C" : 64.400, "humidity" : 157, "sensor_type" : 1, "wind_max_m_s" : 3.800, "wind_avg_m_s" : 3.600, "wind_dir_deg" : 270, "mic" : "CRC"}

{"time" : "2021-04-14 22:48:57", "model" : "Bresser-6in1", "id" : 432013605, "channel" : 0, "battery_ok" : 1, "temperature_C" : 16.300, "humidity" : 83, "sensor_type" : 1, "wind_max_m_s" : 3.400, "wind_avg_m_s" : 3.300, "wind_dir_deg" : 292, "mic" : "CRC"}

As you can see I get two readings, the top reading always has a temperature of 64.4 and humidity of 157.  However, when parsed into weewx the readings are stable and what I would expect from the sensors.

Since the rain sensor data is missing I think either the protocol is slightly different or my sensor map in weewx.conf is not correct but since the rain data is not being shown by rtl_433 then I think it's the protocol.

Is anyone smarter than me (clearly!) who can steer me toward collecting the rain data?

Thanks, Michael