Interesting that you can do that with a digital IO pin. I'd be interested to know if you can clean up and replicate the waveform so it could be sent from a less capable microcontroller. Interesting to see the different bandwidth profiles too.
to successfully pipe rtl_fm to sox you need this version of rtl-sdr: github.com/keenerd/rtl-sdr otherwise you'll get the **sox FAIL formats: can't open input `-': WAVE: RIFF header not found. ** error
Quick ? So as long as the code isn't rolling if you can manage to record it once, you basically have control of that device forever ? So you can index/catalog a bunch of different devices , convert the .wav files to .rfa and have a library ,, If I am understanding that correctly , thats awesome. What about for rolling code though , Do you need two radios for this , one to jam and one to record the valid keypress and save it ? I am a Linux admin , part time Pentester, I've been dying to get started with RTL-SDR. I just want to go in with as much understanding as possible. Thanks
Raspberry Pi (as pretty much ALL the small electronic gadgets BTW) uses so-called SELV i.e. safely extra-low voltage, which is inherently safe to touch. Just make sure you're careful about static electricity and that's it. The wire should be attached through a cable with a DuPont connector and you should let the other end of it dangle freely (it mustn't touch any grounded surface!).
I have a question as you record the original signal and send it to the raspberry pi, I have a USB polaris AV capture that helps me to see the radio spectrum on my pc
Hey i tried sending test signals from my Rpi to SDR dongle connected to my laptop , but it didn't work . Can you tell me at which GPIO pin should i connect a piece of wire which will act as an antenna
I just record from sdrsharp on windows and convert them with audacity then put them back in to the pi. Until I find a better solution. But when I do I will post here.
As long as you have an adequate recording level, you do not need to go through the normalization process. Most people can't record audio for toffee, this is why rubbish tools like that exist and it does absolutely nothing for the dynamics of the audio, most people normalizing audio tracks they have ripped are only undoing the hundreds of hours of studio time the engineers put in to getting the right dynamics, buggered in seconds with a tool written by a programmer, not designed by someone who understands audio. When I took my studio engineering course at Uni, you are told the correct tools to use and normalizing in a software program is not the same as normalizing on a mixing desk, this is where the two terms are meaning different things. So without going through normalizing your recording, your system should still trigger, if the signal needed to be any stronger, then the original signal would have been larger (stronger).
I have power issues on my Pi3 when I plug in an an E4000 dongle. I have a very capable power supply going to the Pi. Do I have to mod the USB supply rail or something? Run Pi3 from TCP/IP?
Update: RPiTX now has a new experimental branch which can transmit IQ recordings directly. That will hopefully make the process more reliable.
Well done!
nice. gonna try this soon
Awesome vid has definitely sparked some new ideas!
Fantastic vid 👍🏻😊
Interesting that you can do that with a digital IO pin. I'd be interested to know if you can clean up and replicate the waveform so it could be sent from a less capable microcontroller.
Interesting to see the different bandwidth profiles too.
to successfully pipe rtl_fm to sox you need this version of rtl-sdr: github.com/keenerd/rtl-sdr
otherwise you'll get the
**sox FAIL formats: can't open input `-': WAVE: RIFF header not found. ** error
so tell me why I get a error on cmd "rtl_fm -M am -f 433.821M -s 10k -g 10 -E wav -F 9 - | sox -t wav - test.wav rate 48k" sox FAIL formats: can't open input `-': WAVE: RIFF header not found. Useing rtl sdr device Generic RTL2832U OEM
Quick ? So as long as the code isn't rolling if you can manage to record it once, you basically have control of that device forever ? So you can index/catalog a bunch of different devices , convert the .wav files to .rfa and have a library ,, If I am understanding that correctly , thats awesome. What about for rolling code though , Do you need two radios for this , one to jam and one to record the valid keypress and save it ? I am a Linux admin , part time Pentester, I've been dying to get started with RTL-SDR. I just want to go in with as much understanding as possible. Thanks
2:33 2:48 2:55 rip eardrums :(
what wire should I use to attach to the raspberry GPIO? And how to I do it safely, im not into hardware stuff
Raspberry Pi (as pretty much ALL the small electronic gadgets BTW) uses so-called SELV i.e. safely extra-low voltage, which is inherently safe to touch. Just make sure you're careful about static electricity and that's it. The wire should be attached through a cable with a DuPont connector and you should let the other end of it dangle freely (it mustn't touch any grounded surface!).
I have a question as you record the original signal and send it to the raspberry pi, I have a USB polaris AV capture that helps me to see the radio spectrum on my pc
Hey i tried sending test signals from my Rpi to SDR dongle connected to my laptop , but it didn't work . Can you tell me at which GPIO pin should i connect a piece of wire which will act as an antenna
gpio 4
what is the use of rasberry pi for this attack
The raspberry pi is actually the transmitter here, with the signal being generated on GPIO 4 by way of a clever hack (rpitx).
Some say he is still there looking at his light as he turns it on. off. on.....
Where u get piam? rpitx don't contain it
works on pi4 ???
How do you get SOX to encode wave files? -t wav has issue on my rpi3 "sox FAIL formats: can't open input `-': WAVE: RIFF header not found"
I have the same error... any solution?
I just record from sdrsharp on windows and convert them with audacity then put them back in to the pi. Until I find a better solution. But when I do I will post here.
does anybody have a fix for this?
Insert the SDR into the USB port until the command is executed
you didnt explain how you recorded the signal in first place.
Recorded using rtl_fm with an RTL-SDR dongle. Shown in the first part of the video.
light wave dont exist, and with that same command it fails and quits saying user quit when i didnt.
NAYS
As long as you have an adequate recording level, you do not need to go through the normalization process.
Most people can't record audio for toffee, this is why rubbish tools like that exist and it does absolutely nothing for the dynamics of the audio, most people normalizing audio tracks they have ripped are only undoing the hundreds of hours of studio time the engineers put in to getting the right dynamics, buggered in seconds with a tool written by a programmer, not designed by someone who understands audio.
When I took my studio engineering course at Uni, you are told the correct tools to use and normalizing in a software program is not the same as normalizing on a mixing desk, this is where the two terms are meaning different things.
So without going through normalizing your recording, your system should still trigger, if the signal needed to be any stronger, then the original signal would have been larger (stronger).
I have power issues on my Pi3 when I plug in an an E4000 dongle. I have a very capable power supply going to the Pi. Do I have to mod the USB supply rail or something? Run Pi3 from TCP/IP?
How to fuck up with idiot neightbour at 3:50 AM