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cmclaughlin • last Saturday at 4:05 PM • 3 replies • view on HN

How did you reverse engineer the signal?

I’ve looked at a product called Bond that seems to facilitate it. But haven’t yet tried it.


Replies

zbrozek • yesterday at 11:49 PM

I did exactly the same thing for a different brand of DIP-switch-addressable remote-control fan back in 2016. It's been wonderful.

It wasn't that hard; I used gnuradio with an SDR to see what the remotes were sending and just pressed buttons and flipped switches until I figured out what all the bits were. There was no encryption whatsoever.

Zircom • last Saturday at 7:22 PM

Probably not anything more complicated than running some kind of signal receiver while clicking each button on the remote and then capturing/replaying it. I highly doubt there's much if any security around the fan remote signals lol.

cevn • last Saturday at 9:02 PM

Probably AI, it is really good at it. Stuff that normally takes days to reverse is taking minutes now.