In Part 1, we covered capturing and decoding the remote control's signal using
a USB TV tuner: https://youtu.be/_GCpqory3kc

In Part 2, we take use a Raspberry Pi's GPIO pin as an antenna to transmit our
own signals to the ceiling fan.

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

The ceiling fan / light combo I have is Minka Aire brand. I think most of the
different ones on the market work pretty similarly.

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Parts:


rpitx lists the Raspberry Pi 4 as having "beta" support. (I used a Raspberry Pi 3B.)


Sparkfun: https://www.sparkfun.com/products/14643
Adafruit: https://www.adafruit.com/product/3055
Amazon: https://amzn.to/3crvFFI

I found my low-pass filter on eBay (overseas shipping). Digikey has low-pass
filters that would also work, but not as cheap.

eBay low-pass filter: https://ebay.us/4cSPe5

eBay SMA antenna: https://ebay.us/GcL9qa
eBay SMA connector: https://ebay.us/PGPmGM

Note that these all have SMA connectors, not RP-SMA (which look very similar).

Also note that eBay listings come and go, so double-check that you get
compatible parts. The antenna does not need to be exact - the one I got is
listed for 315 MHz and works just fine.

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Background music:

Aerosol Of My Love by Kevin MacLeod
Link: https://incompetech.filmmusic.io/song/7013-aerosol-of-my-love
License: https://filmmusic.io/standard-license

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