A DC or direct current motor is any electrical machine that is used to convert the electrical energy into mechanical energy. The speed of the DC motor can be either controlled manually or automatically through the use of the android device. The manual operating requires the utilization of manpower. They control the speed by altering the voltage. Then why not control the speed of DC motor through the use of Android device having the DC motor speed control application installed in it. The Android DC Motor Speed Controller application aims at controlling the speed of the DC motor through your android device by specifying the functionality to be carried out.