"DragonflEye consists of a living, slightly modified dragonfly that carries a small backpack of electronics"

Spectrum:

The backpack interfaces directly with the dragonfly’s nervous system to control it, and uses tiny solar panels to harvest enough energy to power itself without the need for batteries.

...

The unique thing about DragonflEye (relative to other cyborg insects) is that it doesn’t rely on spoofing the insect’s sensors or controlling its muscles, but instead uses optical electrodes to inject steering commands directly into its nervous system, which has been genetically tweaked to accept them. This means that the dragonfly can be controlled to fly where you want, without sacrificing the built-in flight skills that make insects the envy of all other robotic micro air vehicles.