This robot, called PEARL MK2, is a series of robot PEARL. It has one IR sensor module, one RF module and three luminous intensity sensors and one IR object detector module. Power is provided from two small Ni-MH rechagable battery, 3.6V/70mAh. The used computer is PIC16C711/4MHz produced by microchips. And two small dc geared motors propelled PEARL MK2. PEARL MK2 was designed for several experiments. And I have an interest in testing of movement stability in the rough surface. I am satisfied with the design of PEARLĄ¯s wheel frame. And with PEARL MK2, I can experiment on various things about autonomous and cooperation of small robots. And then I want to build a small robot for finding and removing mines be everywhere of the world. http://chanhak.com.ne.kr Email: choi4233@mail.yosutc.ac.kr