Can anyone tell me what is the data format of their outdoor sensor-transmitters. I have a type TX4U operating on 433MHz and by looking at the data stream there are 2 bursts of 44 bits (looks like the same data transmitted twice). This sensor transmits the following to the receiver:
Outdoor temp: -21.8 deg F to +157.8 deg F
Relative humidity: 1% to 99%
Station ID: 1 to 3
Low Batt: Indicator
Here is a typical burst that I recorded in my lab at around 71.6 deg F and 45% Relative Humidity measured on another instrument:
11110101000111100110101111001111101111001111
I am trying to incorporate this data in one of my own displays and before trying to analyze the format I thought maybe someone knows the format.
By the way, the bit stream you mentioned is inverted. If you flip the bits, you'll see it conforms exactly to the format mentioned on the TX3-TH subpage at:
Here is a link to a Oregon Scientific device that is similar. For that device, the author has some detailed hardware notes and some source code available.