Set Motor Pas cu Pas 28BYJ-48 5V și Driver ULN2003 Verde

Engine Technical Features:

• Recommended power voltage: 5V;
• Number of phases: 4;
• Approximate reduction: 1:64;
• 64 steps / resolution
• Resistance / phase: 50 ohms;
• Minimum torque: 34.3 mN * m;
• Degree of insulation: A.

The driver is based on a ULN2003 integrated circuit that contains several Darlington configurations. It works at very good parameters along with the stepper motor in the kit.

Step-by-step motors are often used in applications requiring precise motion control. You can meet them in 3D printers or normal printers, CNCs or robotic arms. In order to choose the right stepper for your application, see the data sheet to see the power consumption, engine speed and accuracy, torque and how to control it.

Use with Arduino

The picture shows a stepper motor and the ULN2003 driver card. It contains several Darlington transistors to send commands to each engine winding. In chapter DC Motors I explained how we can use a transistor to control through a small current, applied on the basis of the transistor, a much higher current. A Darlington transistor consists of two common series-connected transistors in order to control as large a current as possible with a smallest command current. 

This engine can also be powered from the 5V lead on the Arduino plate, but it is recommended to power from an external source. 

For code 16.3.1, see the book "Introduction to Arduino" 

https://www.optimusdigital.ro/altele/1676-carte-introducere-in-arduino.html

This example of program controls the steps of the motor and the direction of rotation. Although, it is easy to write, it can be seen that this code is quite long. This is a cost-effective way to control simple applications. To understand how the engine works, it is recommended to experiment with the process.