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Reverse Engineering a 433MHz Motorised Blind RF Protocol
- ReverseCold 9y agoThis guy did it the hard way, I automated my lights in a similar way with simple command line tools (./listen <pin> to get code and ./send <pin> to send.) See here: https://home-assistant.io/ https://home-assistant.io/
- deleted 9y ago[deleted]
- nickw444 9y agoHey there, I'm actually the author of the linked post. Yes whilst you're right about doing this the hard way, this wasn't really what I was wanting to do. In the post I actually outlined that I had actually captured enough data from a handful of remotes that I could have replayed these captures to control the blinds (and I even had a rig set up to do this). But that's not what I wanted to do. I was interested in working out what was happening with these remotes and being able to generate as many arbitrary remote codes as I wanted. Going the step further to reverse engineer the protocol is something I did as a learning (and fun and challenging) exercise. I've definitely picked up skills through this process that I can apply in similar projects later down the track.
- corysama 9y agoHey there yourself! Great article. I posted it to https://www.reddit.com/r/ReverseEngineering/comments/6nmu43/reverse_engineering_a_433mhz_motorised_blind_rf/ https://www.reddit.com/r/ReverseEngineering/comments/6nmu43/...
- rupellohn 9y agoNice write-up! - I strongly recommend looking at dspectrum for those interested in reversing these kind of devices: https://github.com/tresacton/dspectrumgui https://github.com/tresacton/dspectrumgui "The goal of this app is to make it trivial to demodulate common RF signals, and provide a digital worksheet for your reverse engineering efforts."
- tomyws 9y agoThe author identified a similar workflow for breaking down these packet capture bits, and linked to other potential methods. I'd say his process was an interesting read!
- bbayer 9y agoNice read but I would use rtl-sdr and SDR tools to reverse engineer this kind of stuff. There are lots of good tools can be used for this purpose in SDR community like this one: http://www.rtl-sdr.com/waveconverter-an-open-source-rf-reverse-engineering-tool/ http://www.rtl-sdr.com/waveconverter-an-open-source-rf-rever...
- j45 9y agoNice write up! I wanted to do this in my place and have one less reason not to
- nickw444 9y agoThanks, feel free to hit me up on Twitter (@nickw444) if you happen to have any questions :)
- j45 9y agoWill do, currently have smaller 1" roller blinds so have to find the tubular motors that fit inside of them. Rollertrol.com carries some but they are quite a bit pricier than the full radius ones elsewhere.