There is a great saying; "Necessity is the another of invention" the sole purpose of writing this paper is to take a step forward for the development of the electrical industry in Pakistan. The paper describes the proto-type mobile robot, which is capable of walking on the overhead transmission lines in the live environment. Its ultimate purpose is to inspect the transmission lines through cameras and send the data to the ground. The robot consist of two motors, four wheels, sensors, cameras etc. This robot can cross the clamps on the lines. As embedded computer based on Raspberry Pi3 is chosen as a core of the control router. The sensor configuration is used to sense any obstacle in shape of clamps, GPS system is mounted on the robot which provides the current location of the Robot.