hello,my name is mangesh,I am an engineering student.I have to submit a mini project in cllg.so i want a complete explanation on a project steeper motor based valve controller with circuit diagram.

steeper motor based valve controller require micro controller to give appropriate pulse into stepper motor to drive valve , and this project used to open and close butter fly valve in precession

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you acn get similar information from
http://freepatentsonline20100009303.pdf