I am very sorry to post my very first post as a help seeker.
Actually I'm trying to make a project where I want to use 2 stepper motor and a servo motor for a XY board chess robot. The main idea was brought from http://www.instructables.com/id/How-to-Build-an-Arduino-Powered-Chess-Playing-Robo/?ALLSTEPS
Now, I dont want to use the reed sensors mentioned here.
I just want to give an input to the arduino as the following format "a2b3" where a, b, c, d.... are the values of x axis and 1, 2, 3... are the values of y axis and a2 is the coordinate of the initial position and b3 is the final position.
It is a kind of CNC project but I want to use this idea to move the chess pieces placed on the board by using keyboard command given from the PC. Thanks.