Stepper Motor Driver Circuit

Posted on Jan 23, 2013

The following diagram is for the main circuit of the motor driver. A testing version is shown near the end of this page. It is laid out differently and shows the SN7474 in logic block form and LED`s are used to indicate the motor coils being switched.

Stepper Motor Driver Circuit
Click here to download the full size of the above Circuit.

The blue line on the drawing is the path that the CLOCK pulses that drive the circuit follow. The stepper motor would not be connected as shown on the schematic as the motors usually have a common and four coil leads. Also, the filter capacitor

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