However, if the motor consumes too much power, the Arduino can be permanently damaged. The advantage is that this is the possible easiest solution for providing power to the motor. Important remark: With this setup, we are powering the motor directly from the Arduino. Accordingly, the board’s VCC pin must be connected to the Arduino’s 5V pin. The board’s GND pin must be wired to the Arduino’s GND pin. The driver board has two pins for the power supply which are labeled GND and VCC. Typically, the 28BYJ-48 motor comes with a 5-pin connector that fits to driver board’s connector. Pin layout: Pin layout that shows how to connect a 28BYJ-48 stepper motor to a ULN2003A driver board and an Arduino Uno. In this tutorial, it is shown how to control the 28BYJ-48 with an Arduino Uno. Luckily, the Arduino platform has already a built-in stepper library that allows us to control the 28BYJ-48 stepper motor with the ULN2003A driver board. The 28BYJ-48 is a very cheap stepper motor that often comes with a ULN2003A driver board. With this information, we can precisely turn the rotor of our stepper motor, since we then know how many degrees correspond to a single step. After having a quick look into the data sheet of a stepper, we know exactly how many degrees correspond to a single step of our motor. In particular, stepper motors are driven step by step. As a result, a stepper motor can be driven much more precisely than a conventional dc motor. A 28BYJ-48 stepper motor connected to a ULN2003A driver board.Ī stepper motor divides a full rotation in multiple steps.
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