3D printer A machine able to extrude and deposit layers of plastic in order to form a three-dimensional object.

Accelerometer A sensor that determines its speed and acceleration and returns that value to a microcontroller.

Airframe The chassis of a quadcopter.

Amp The unit of electrical current.

Analog Data sent in a continuous wave of varying voltage, as opposed to digital, which sends data with a series of on-and-off signals.

Array In programming terminology, an array is a list of values stored for future use.

Autonomous robot A robot that relies on its own programming, rather than a human operator, to make control decisions.

Autopilot The microcontroller that steers a drone along a pre-programmed flight path.

Barometric sensor A sensor ...

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