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Do you have a broken button fan?
Do you find it uncomfortable getting up from your bed to change the fan speed?
Would you to like make your own projects and save 70% in cash? instead of buying an automated fan controlled by Bluetooth, with a little money you can convert a traditional fan that changes the speed through a rotary switch to a super fan that can be controlled by your smartphone.
If you look at the image above, it does not change the fan model at all. All the components are embedded inside it, and now we are going to show how it was done.
Note the position of the wires in the selector switch.
There is the marking of each wire color for each speed, observe the one of your vented one and note, because it will be very important for you to organize the programming logic of the relay drive for speed control, as this switch will be replaced by the relay module four channels.
To power the Arduino, the relay module, and the Bluetooth module, we used a 5V voltage source and 3A current source.
Connect it in parallel with the fan power cable.
Then, by plugging the power cord of the fan into the outlet, it will already power the source of the cell phone that will convert the AC power into direct current powering my electronic circuit.
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Student: Bianor Oliveira