Just fun for flying Quadcopters that fit inside their controller I use drone and quad interchangeably in this article to refer to quadcopters. Quads come in many different sizes. Not all manufacturers agree on a naming convention. Here is what I think makes the most sense. From smallest to biggest: Pico, nano, micro, mini, mid, Read more about The best pico and nano sized quadcopters (quads or drones) that fit inside their controllers[…]