![]() ![]() The unipolar or bipolar stepper is controlled by using digital pins 8, 9, 10, and 11 in conjunction with either a U2004 Darlington Array (for unipolar steppers) or a SN754410NE H-Bridge (for bipolars). ![]() In this example, the turns of a potentiometer (or other sensor) on analog input 0 are used to control the movement of a stepper motor while using the Arduino Stepper Library. ![]() For more information about the differences of the two types, and about the circuits that must be built to control a stepper, please take a look at Tom Igoe's page on stepper motors. There are two types of steppers, Unipolars and Bipolars, and it is very important to know which type you are working with. The shaft of a stepper, mounted with a series of magnets, is controlled by a series of electromagnetic coils that are charged positively and negatively in a specific sequence, precisely moving it forward or backward in small "steps". Stepper motors, due to their unique design, can be controlled to a high degree of accuracy without any feedback mechanisms. We will cover how to control a NEMA17 stepper motor in combination with a A4988, a DRV8825 and a TMC2208 stepper driver. Learning Examples | Foundations | Hacking | Links by Dejan 4 Comments Arduino Tutorials In this tutorial we will learn everything we need to know about controlling stepper motors with Arduino. ![]()
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