Re: [Discuss-gnuradio] Gnuradio ASK/OOK Binary sequence

[Nick Foster]

Well, if you want a basically working "cheat sheet", I already wrote a Gnuradio receiver for those keyfob transmitters:

https://github.com/bistromath/keyfob

It hasn't been updated in years, so it's still on the old Automake system. It won't compile, but the source should get you started.

--n

On Mon, Sep 21, 2015 at 12:17 PM 0x00-0xff <address@hidden> wrote:

Thanks, I've already red those pdf's.
The adsb grc doesn't help me enough :)

I'm getting large binary files with 0's and 1's which doesn't resemble
the binary sequence I'm looking for...


On 2015-09-20 22:33, Chris Kuethe wrote:
> Check out gr-adsb
> (https://github.com/wnagele/gr-adsb/tree/master/examples) - the
> example flowgraph uses a threshold block to produce 0's and 1's. From
> there you can unpack bits to bytes, add a constant of 48 (numerical
> value of ascii '0') and come out with a character stream of '0' and
> '1', which you can then feed into a file sink (opening /dev/stdout)
>
> Also check out these tutorials:
> http://www.inguardians.com/pubs/GRC_signal_analysis_InGuardians_v1.pdf
> https://nccgroup.github.io/RFTM/
> https://cansecwest.com/slides/2015/From_Baseband_to_bitstream_Andy_Davis.pdf
>
>
> On Sun, Sep 20, 2015 at 1:13 PM, 0x00-0xff <address@hidden>
> wrote:
>> Hi guys,
>>
>> After trying several tutorials en demo's... I need your help.
>>
>> I'm trying to get the binary stream from a ASK/OOK modulated signal
>> (keyfobs
>> on 433mhz).
>> I've been able to manually write down the sequence and retransmit it:
>> https://github.com/0x00-0xFF/gr-x10
>>
>> How do I get the 0's and 1's on /dev/stdout (or file).
>> The tutorials I've seen, give me a load of 0's  and 1's that do not
>> match
>> the sequence I see in baudline or wx_scope
>>
>> What I realy (realy) want is, to save multiple received ASK/OOK
>> signals into
>> a file with corresponding frequency.
>> But any help is appreciated ;)
>>
>> Kind regards,
>>
>> 0x00_0xFF
>>
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> address@hidden
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio


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