ULN2003 Control Stepper Motor by Parallel Port


This is an easy to build stepper motor driver that will allow you to precisely control a unipolar stepper motor through your computer’s parallel port. With a stepper motor you can build a lot of interesting gadgets such as robots, elevator, PCB drilling mill, camera panning system, automatic fish feeder, etc. If you have never worked with stepper motors before you will surely have a lot of fun with this project.
Uln2003 control stepper motor by parallel port

But This Stepper Motor Controller Connection Diagrams use 2 port voltage are 5Volt and 12V and four resistors , a zener diode.
The Four-Wire Connection the ULN2003 (High-Voltage High-Current Darlington Transistor Array
)/ MC1413 is a 7-bit 50V 500mA TTL-input NPN Darlington driver. This is more than adequate to control a four phase unipolar stepper motor such as the KP4M4-001.
Stepper Motor Controller by ULN2003

Source: http://www.doc.ic.ac.uk/~ih/doc/stepper/control2/


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