Hi, I want to interface pc and 8051 for wireless communication through serial port using RF. Actually i am controlling the stepper motor and dc motor used in a robot through microcontroller. I want to send the two parameters from pc to controller. one is degree that a stepper motor should move and second is distance which dc motor 've to travel. The main problem is i dont know what RF module to use it should be easy to use and cheap and second i dont know how to communicate using RF. Can someone help me plz