Replacing RF remote with Micro Control
Had 3 ceiling fans that I wanted to control individually, on the 3 speed setting and also off. The fans came with no remotes, but on a whim, I ordered 3 sets of RF remotes from Aliexpress:
https://www.aliexpress.com/item/Best-Promotion-House-Ceiling-Fan-Light-Remote-Control-Kit-New-Universal-European-Contracted-220-240V/32590113824.html
https://developer.mbed.org/users/4180_1/notebook/ir-and-rf-remote-controls/
The SAW resonator that is on the fan remote board board
303.875 Resonator
Modulated with a so... Holtek HT62104
http://www.holtek.com.tw/documents/10179/116711/ht62104v100.pdf
Photos of the Fan remote & board
https://goo.gl/photos/YXD8c99Aba4uLkez6
Using a micro to directly control the existing remote may be easier
https://github.com/dresslerc/FanController
https://community.particle.io/t/ceiling-fan-controller/6170/9
http://www.instructables.com/id/Reverse-Engineer-RF-Remote-Controller-for-IoT/
http://www.instructables.com/id/Voice-Control-of-a-Ceiling-Fan-With-Alexa/
https://blog.adafruit.com/2016/12/13/control-a-ceiling-fan-with-315mhz-rf-particle-photon-ifttt-and-amazons-alexa/
http://www.instructables.com/id/RF-315433-MHz-Transmitter-receiver-Module-and-Ardu/
https://www.amazon.com/dp/B00VZ1AWQA
https://github.com/sui77/rc-switch
So this thing is 303.875MHz, not easy to buy traansmitters... they exist though
http://www.wenshing.com.tw/Data_Sheet/TWS-DS-1_303.875MHz_Miniaturization_Wireless_Transmitter_Module_Data_Sheet.pdf
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CategoryMicrocontrol
CategoryHomeAutomation
CategoryRaspberryPi
CategoryLinux