Radio controlled bugs

Really. [Link]

The device is much simpler to program and use than similar ones developed previously, because it makes implicit use of the beetle's own flight control capabilities. The researchers found that flight could be initiated by simply applying a single pulse of electrical stimulation via the electrodes implanted into the left and right optic lobes. A single pulse from the same electrodes was also sufficient to stop the wing beats. Exactly how this occurs is unclear; it is known that visual inputs can initiate flight in locusts and fruit flies, and the researchers speculate that stimulation of the optic lobe activates large diameter "giant fibre" motor neurons which project from the brain to the wing muscles.

Once initiated, flight continued in the absence of further stimulation. The beetle powers its own flight, and levels with the horizon on its own, so that the neural and muscle stimulators are only used when a change in orientation or elevation is required. Turning could be initiated by asymmetrical stimulation of the muscles at the base of the wings, with a left turn being triggered by an electrical pulse to the right flight muscle, and vice versa. The stimulator could also be used to modulate the frequency of wing oscillations, which caused changes in altitude.