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help needed about a controlled stepper motor

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hey can anyone help me please
i need the program and the ciruit drawing of a controlled stepper motor using PIC 16877A it works as follows:

1- we have a potentiometer
2-an LCD
3-A stepper motor

when the potentiometer is moved by a certain degree then the LCD screen types how many degrees and the stepper motor moves by the same degree
degree from(0 to 270 degrees)
if i rolled the potentiometer by 120 degrees the screen should type 120 degrees and the motor should turn by 120 degrees if I roll back the potentiometer to 100 degrees then the motor should turn on the opposit direction back to 100 degrees thanks a lot for your help I really appreciate it
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