Sub Zero, It seems like nobody understands your problem, here is my way to solve the problem. First you will need two strong stepper motors one to turn your bobben and the other to guide the wire, then you have to use a PIC with 8 + I/O's to drive the motors, 4 pins for each motor, I will recommend the PIC16F627/8, that is a 18 pin device. You can use port B to drive the motors and port A for sensor to sence when the guide is at the end of the spool and change the direction of the guide motor and a rotory encoder or pot to set the speed of the bobben motor (see the PBP manual on how to use a pot on digital input) or you can use 2 push buttons. There is lots of stepper driver cicuits on the net and PBP code.