Abstract – The utilization of magnetic fields and magnetic forces has become more frequent in controlling objects such as small robots or magnetic capsules. In biomedical applications, these technologies have brought alternatives to the traditional methods of treatment and diagnostics, which can be painful and cause some discomfort to the patient, such as endoscopy and colonoscopy. In this paper, a system is proposed that assesses the possibility of controlling a magnetic capsule object using magnetic fields. The prototype consists of three coils powered separately using a power stage with three step-down DC-DC converters. The position of the magnetic capsule is controlled using the generated magnetic fields and detected using a video camera. Taking into account the position of the object, an algorithm was developed to control the duty cycle of PWM voltage that feeds each coil. By performing three different sets of experiments, it was demonstrated that the position of the capsule can be precisely controlled through the magnetic fields generated by the three-coil system.