Shopping tab on State Motor (Steping Motor): sub (0).

I was fit to be any ice อ่ะครับ that the State Motor Shop tab. It can be rotated at a few degrees หรอครับ

Another concern. If I want to rotate the motor at 120 degrees will be made or what blazon ครับ cycle. Or it can be adjusted at all thanks in advance
ครับ.
http://www.pantip.com/tech/electronics/topic/ee2849985/ee2849985.html