Quad-copter is a copter equipped with four motors and propellers, faced to top side, placed vertically and opposite each other propeller. Physically, quad-copter resembles a plus sign form, where each motors placed on edge of the plus sign. The quad-copter design reported in the thesis uses microcontroller STC12C5624AD, electronic speed controllers, brushless DC motors, 3000mAh Lithium-Polymer Battery Packs, propellers, ADXL345 accelerometer module, signal receiver module, and remote controller. Using a 2.4GHz remote controller, the control signal will be received by the receiver module, and then processed by the microcontroller. The accelerometer module acts as balancer of the quad-copter that could reset the quad-copter to its initial position and detects tilt position in 3-axes (x, y, and z axis). After receiving input signal from remote control and accelerometer module, the microcontroller will generate final decision to operate motor stably. Combination of four main motors, accelerometer, and microcontroller produce a cost-effective quad-copter that can fly stably indoor and outdoor. This thesis reports design and construction of the remote-controlled quad-copter. This work, not only applies theories that author have learned, but also could be useful for real life in the future.
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