The BitESC is the smallest speed/motor controller I have come across. It is designed to work with the motors from those tiny R/C cars we all bought at least one of, but now never use. Well, here is you chance to make a really tiny R/C plane
The BitESC is a small electronic speed controller for those little RC cars like the MicroSizer / BitChar-G. It can be used in a small RC plane to have some control over the speed of the motor. The speed of the motor ramps up or down, depending on which of the buttons on the transmitter you press.
How to make a Micro sized electronic speed controller