433MHz TUI scanner: using a FT232H connected to a CC1101(blog.jacq.cc)
33 pointsby xx__yy2 days ago5 comments
  • peterabbitcook13 hours ago
    Neat project. A few years ago I tried and failed to get a junkyard Toyota security ECU from a ‘96 4Runner to work for remote lock/unlock in my ‘94 Land Cruiser with an eBay key fob. I might revisit it with this approach - cheap and easy RF analysis software/hardware would have eliminated a lot of guess work … though if memory serves I think the real headache was decoding wire colors in the security harness, which were not all explicitly labeled in the manual for “security” reasons.

    What approach are you going to take to try and determine the cryptographic key of your device? Is there some way to hack and “root” your gate opener controller?

  • cj0010 hours ago
    I did something similar for my parents remote controlled blinds. I used a Flipper Zero to record the signal sent from the remote and an ESP32 + transmitter to replay the commands at sunrise and sunset.
  • ROOFLES14 hours ago
    Nice another vibe coded project and matching AI written blog. This is all getting very tiresome. There much easier ways to generally poke around RF
    • mixdup13 hours ago
      I get using AI to figure out things you might not otherwise have figured out but just copy/pasting the output from AI into a blog post is not interesting to me. Take 10 minutes to humanize the output. Write the blog post and tell us how you did it, including how you used AI, how you prompted it, etc. But I don't need someone's claude transcript as the only output. Ugh
    • fusslo13 hours ago
      I'm on the downswing of AI. I no longer trust what AI tells me. Copilot gives one answer. ChatGPT gives another. Claude equivocates. Copilot flavors every new answer with the meat of previous conversations.

      Reading AI generated code or blog posts you have to be extra dubious. AI will lie, and the human who prompted may or may not have vetted that information. The contents could be gold as easily as it could be sand.

      For things that I need correct: I research on sources pre-2022. For things that don't really matter: I prompt AI and iterate.

  • ajsnigrutin13 hours ago
    Meh,

    Get an rtl-sdr dongle that covers way more frequencies, install urh ( https://github.com/jopohl/urh ), and you get the full signal on RF, demodulated and you can do full analysis on it + you can do a lot of other stuff with RF with the dongle and other software (eg. track planes in the air with dump1090, listen to walkie talkies and ham radio operators, etc.)

    If you buy a tx-capable sdr, ignoring the legallity issues, you can also replay that signal or modify it before replaying.

    • cactacea10 hours ago
      While skimming the article the only thought I had was "this is really the hard way to do this huh"
    • sitzkrieg7 hours ago
      i initially disagreed, assuming they went with the cc1101 to transmit custom stuff. also ti launchpads for their entire cc series are more affordable and easier to use than any tx sdr. it is not hard to program RF ism band stuff, even with custom protocols there is reams of examples.

      but ya after reading a bit more its the blind leading the blind

    • giva13 hours ago
      Thanks, I came here to ask what was wrong with the good ol' rtl2832.
  • rvz13 hours ago
    I wouldn't use this vibe coded slop that will just blow up my hardware. Unlikely to work with other chips as the author tested it with the only one he has with him.

    Use with caution.