[riveducha]

I went into the weeds of reverse engineering my Minka Aire ceiling fans with a USB RTL-SDR. In my case the manufacturer's remotes worked fine, but I wanted to integrate it in with Home Assistant. If you're interested, you can see what I did: https://www.riveducha.com/decode-wireless-signal-with-usb-tv...

I used a USB RTL-SDR ($15) and a Raspberry Pi to receive and transmit, but I think the Flipper Zero can do it all-in-one.

[margalabargala]

What $15 USB SDR can transmit? All the ones I have only receive, and to transmit I'm seeing more like $100. At $15 I would buy one immediately.

[cdchn]

I think people have managed to use the GPIO pins as a bit bang transmitter.

[sebcat]

See https://github.com/F5OEO/rpitx

[riveducha]

Sorry, my wording was unclear. The USB RTL-SDR was for receiving, and I did the capture and analysis on my desktop. The Raspberry Pi was for transmitting using the GPIO pins.