The Quad copter is a copter which can be hover and fly in the air with the four motors and propellers, facing top side, placed vertically and opposite each other. It can be designed for multiple purposes depending on the applications. In this paper, a complete system is designed and implemented, in which the motion of a quad copter is stably controlled by a remote controller. To observe the surveillance, a wireless camera is mounted on the quad copter. The quad-copter design in this paper uses stabilization board with microcontroller ATmega328, electronic speed controllers, brushless DC motors, 2200mAh Lithium-Polymer battery, propellers, signal receiver module and remote controller. Using a 2.4GHz remote controller, the control signal is received by the receiver module, and then processed by the micro controller. The performance of the controllers is further improved by the use of inertial sensors of the quad copter.
