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The Unmanned Aerial Vehicles (UAV) technologies are growing rapidly. This is supported by sensor, control, and actuator technology. The development of UAV technology strongly supports for surveys, exploration, real-time monitoring territory, and so on. Multirotor UAVs is use brushless motors as a driver for moving. Brushless motor controlled by ESC. ESC receives DC power to be converted into commutative DC to drive brushless motors. ESC actually also senses the position of brushless motor rotors in determining their command. Battery energy efficiency, critical, the remaining flight time are important thing of UAVs. For this reason, the purpose of this research is to create a device that can be used for consumption monitoring of wireless brushless motor with Android smart phone devices. The steps taken are the design of android smart phone software / applications and design of current sensors with the hall effect phenomenon. The large magnetic field in the current of the wire is directly proportional to the large current through the conductor, and inversely proportional to the square of the distance. The magnetic field can cause concentrations of electrons to certain sides of each conductor plate. This phenomenon can cause a potential difference in the conductor plate and is often called the hall effect. Magnitic flux is continued by the permeability of the material exposed to magnetic flux. By providing iron core material, or ferrite ring, magnetic flux will accumulate on the ferrite ring. The hall sensor inserted at the space of the ferrite ring will be more rich in magnetic flux. This is used for measuring current without breaking the conductor. The hall of the voltage value are transmitted with the HC-05 bluetooth module to the Android smart phone for displaying..