On 2016-12-11 21:29, Wanderer wrote:
On Sunday, December 11, 2016 at 12:52:04 PM UTC-5, MRAB wrote:
On 2016-12-11 16:28, Wanderer wrote:
> I have an outdoor thermometer that transmits to an indoor receiver at 433Mhz.
I also have a 433Mhz USB serial port jig from a TI development tool. I would like
to use the TI USB serial port to capture the temperature information. The TI USB
port registers as a COM port that I can access with pySerial. Now the datasheet
from the temperature probe only says that the RF frequency is 433MHz and that it
transmits every 39 seconds. Since I don't know what protocol the thermometer uses
or baud rate, I want to look at the rawest level of data collected with the USB
com port and see if I can make anything out of the gobbledy gook coming in. Is
there a way to get this kind of data from pySerial? I've tried scanning at
different baud rates but so far I haven't captured anything.
>
> Also in the advanced settings in windows device manager, there are some
settings for Fifo buffers, and receive and transmit buffers. Can these be accessed
in pySerial? Does pySerial override the settings for baud rate, etc in windows
device manager or do I need to set those to match what I'm using in pySerial?
>
What is the make and model of the thermometer? Is the datasheet online
somewhere?
http://global.oregonscientific.com/manual/THN132N.pdf
That datasheet says """This product is compatible with various wireless
weather station products."""
OK, so that suggests that there's a standard of some kind somewhere.
Googling for """wireless weather station protocol""" gives:
Reverse engineering wireless weather stations
hackaday.com/2011/06/13/reverse-engineering-wireless-weather-stations/
and that page leads to:
TX29 Protocol
http://fredboboss.free.fr/articles/tx29.php
Good luck!
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