Stepper motor can be used in various areas in microcontroller projects such as making robots, robotic arm, door lock system and so on. So, stepper motor is suitable to be used in this project and must be considered with others motors. There are 2 types of stepper motors which is bipolar and unipolar.
Unipolar stepper motor
The unipolar stepper motor has five or six wires and four coils. The center connections of the coils are tied together and used as the power connection. They are called unipolar steppers because power always comes in on this one pole.
Bipolar stepper motor
The bipolar stepper motor usually has four wires coming out of it. Unlike unipolar steppers, bipolar steppers have no common center connection. They have two independent sets of coils instead. It can be distinguish from unipolar steppers by measuring the resistance between the wires.
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