Stepper Motor

How to wire up the larger stepper motor from SparkFun using an H-Bridge (SN754410):




(Images adapted from

This motor requires 12V and up to 330mA of current. Red and Green wires are one coil, and Yellow and Blue the other coil. Motor datasheet showing wiring color codes:

Code samples – use the Arduino stepper library for easiest control:

Visual animation showing how they work inside:

More information from Tom Igoe’s excellent explanation:

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