This is just a quick tip for anyone who wants to add a little life to their LED's. This trick allows you to dim and brighten your LED strips proportional to the throttle of your motor.
In order to make this work, all you need to do is connect your LED strip's positive and negative wires to 2 of the 3 ESC output wires. When the ESC sends an AC signal to the motor, this signal hits the LED's and causes them to turn on and off very rapidly. This rapid switching is what gives the appearance of dimming and brightening on the LED's. The higher your throttle, the faster it turns on and off, the brighter the LED's get.
It is important to remember that this only works when there is a motor connected to the ESC at the same time. The motor provides a certain back EMF (electromagnetic field) to the ESC so that it knows the position of the motor. If the ESC is not receiving this back EMF then it won't know what signals to send and the LED's won't dim. As you can tell from the video, this can be very useful in a quadcopter, as most people have their LED's and ESC's close together.
Hope this helps some of you who were looking for a way to do this or maybe just want a way to make your LED's a little more unique.
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