Because some pins are used for LCD, some free dig.pins I need to use do electronical clamps (servo) and controling a heat fan to ON only if an air is heated.Here is a program which I created, but if I connect the LED to pin 0, it blinks dependly on air pump rotation, but I do not know, if this steps are sufficient for example for L297..... to create f.e. 2000 rot.Because I am only basic programer of