Hi,
I have been trying for while to decode the ON/OFF signal from my Worcester Digistat thermostat (picture attached).
It is a RF433 thermostat, but the electronics is all hidden under the LCD unit.
The idea is to capture the signal and reproduce it with a cheap RF 433 FS1000A transmitter attached to an Arduino. The approach is similar to the approach in this post. I was successful with radio controlled power sockets.
I am using a Noolec RTL-SDR receiver (link) and capturing the signal with gqrx with FM demodulation.
The recorded .wav file is then exported to Audacity and looks like the attached pictures. The signal is repeated 3 times.
This signal looks different from most of the signals I have seen online from tutorials doing the same thing. I am not an expert in RF and radio communication so I am struggling to interpret it because:
- I do not see vertical sharp lines
- The short signals look more like spikes
- The is a lot of noise at the end of the signal
- The lows and the highs have both variable duration and I cannot identify a clear pulse
I tried assigning 0s to spikes and 1s to long signals, but it did not work at all.
Anyone could provide some hint?
Thanks!!