New device LIVARNO HG09649 (LIDL) blind remote

[schroeder-paul]

Hey,

Is there any how-to, to create a decoder for new devices? I did not find anything (although I was not super carefully searching)...

I bought some LIDL blind a while ago, and they feature a remote control:

I would like to read the button presses, here are some captures cap.zip

[gdt]

more docs/*

[klohner]

Interesting signal. I only see data in g003, g005, g007, and g008.

You can see the raw data with something like:

rtl_433 -R 0 -X "n=Livarno,m=OOK_PCM,s=333,l=333,r=5000," -r g008_433.92M_250k.cu8

Sync looks like a lot of 0xaa, There then seems to be 3 repetitions of the data, each maybe prefixed with 0xccccccccff00. Data is Manchester encoded, but if using 333μs per symbol, the MC data is double-wide, ie. 0x1100 or 0x0011 for logical 1 or 0.

You can pick out these rows with something like:

rtl_433 -R 0 -X "n=Livarno,m=OOK_PCM,s=333,l=333,g=2000,r=5000,bits=216,symbol_one={4}c,symbol_zero={4}3" -r g008_433.92M_250k.cu8

Or, pick out just the first repetition by itself with something like:

rtl_433 -R 0 -X "n=Livarno,m=OOK_PCM,s=333,l=333,r=5000,preamble={16}ff00,symbol_one={4}c,symbol_zero={4}3" -r g008_433.92M_250k.cu8

I can't seem to find a CRC. Here's a BitBench of what I found.