Initially, the DR-1, the first drone OnePlus began as a joke. But the manufacturer has taken the game and actually developed a small quadricopter. It will soon be available in a limited edition for the modest sum of 20 euros.  For several weeks, OnePlus announces the imminent arrival of a new product in a category that did not previously covered. Several visual on the official forum of the Chinese manufacturer showed that he would be a fun product. Of all the possible assumptions, we opted for a gamepad. Others proposed a drone, what seemed clearly fanciful. But why not? Little did we