Difference between revisions of "Unipolar Stepper Motor Driver Circuit"

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The L297 has several inputs that can be generated by a PC/104 stack or other controller. This circuit allows you to control each step, in full-step mode. Meaning: You can tell it to move one step in either direction (of course you can make it move fast and it will continuously rotate). The two inputs are a direction and a pulse. In the next section you will find a program to control this using xPC.
The L297 has several inputs that can be generated by a PC/104 stack or other controller. This circuit allows you to control each step, in full-step mode. Meaning: You can tell it to move one step in either direction (of course you can make it move fast and it will continuously rotate). The two inputs are a direction and a pulse. In the next section you will find a program to control this using xPC.


[[image:unipolar stepper circuit schematic.jpg|center|600px]]
[[image:unipolar stepper circuit schematic.png|center]]


Here is the CircuitMaker file: [[media:unipolar stepper driver circuit.ckt|Unipolar Stepper Driver Circuit]]
Here is the CircuitMaker file: [[media:unipolar stepper driver circuit.ckt|Unipolar Stepper Driver Circuit]]

Revision as of 14:53, 27 July 2006

This page presents a circuit for driving high-power unipolar stepper motors. Here you will find all the information needed to make your own. This circuit allows step-level control and can be easily modified for other modes of operation. (NOTE: Alternative is to use the DS2003)

What you need

Circuit Schematic and Photo

The L297 has several inputs that can be generated by a PC/104 stack or other controller. This circuit allows you to control each step, in full-step mode. Meaning: You can tell it to move one step in either direction (of course you can make it move fast and it will continuously rotate). The two inputs are a direction and a pulse. In the next section you will find a program to control this using xPC.

Unipolar stepper circuit schematic.png

Here is the CircuitMaker file: Unipolar Stepper Driver Circuit

Unipolar motor driver.jpg Unipolar motor circuit photo.jpg

You may find the following diagrams useful when constructing this circuit:

L297 pinout.jpg NPN pinout.png Stepper wire colors.png