Electronics system of the machine consists of a control box, an ac motor, a
permanent magnet stepper motor with driver, two limit switches and a power
supply. Control box houses the printed circuit board which is connected to the
control panel. Control panel consists of a LCD, a potentiometer, two push
buttons, three different colors LED pilot lights, and a power switch. Schematic
diagram of the overall circuit construction is as shown in Fig. 6. An AC motor is