Guiding a mobile robot for within the time in an indoor environment has shown the way for the study and sophistication of navigation methods. In this paper, we developed robotic structure in the indoor and developed navigational algorithm that would be helpful to move from one point to another point. This paper concentrates on the design of mobile robot control mechanism that uses the ultrasonic array for sensing random maze environment like hospitals and actuate the motor modules accordingly to complete the service. As a part of the development, we simulated in Xilinx ISE 10.4 environment using Verilog HDL programming and also synthesized on FPGA part Spartan 3AN evaluation board by considering a random environment.