ROHS Step motor 28BYJ-48

Hello

I have been trying to get my ROHS Step motor 28BYJ-48 to run using matlab code (without simulink) and have had no success. Hoping someonoe may know how.

Here is how my motor is hooked up:

Thanks!

Answer 1

[Amrtanshu Raj]

Hi,

There can be 3 ways to control a stepper motor in MATLAB.

• Adafruit Motor Sheild. You can refer to this example for the implementation.
• Basic Arduino commands to control the motor in steps. (The speed will be slow)

a=arduino() 
configurePin(a,'D2','DigitalOutput'); 
configurePin(a,'D3','DigitalOutput'); 
configurePin(a,'D4','DigitalOutput'); 
configurePin(a,'D5','DigitalOutput'); 
 
 
 
pins={'D2', 'D3', 'D4', 'D5'}; 
steps={'1100', '0110', '0011','1001'}; 
 
 
steps_size=size(steps,2);                        %steps = 4 
 
for i = 1:100 
 
    step = steps{mod(i,steps_size)+1};      % step=1,2,3,4 
 
    for j=1:4 
        writeDigitalPin(a, pins{j}, str2double(step(j))); 
    end 
 
    %pause(0.01); 
 
end

• Serial Communication (requires programming on the Arduino side)- You can setup a serial communication between Arduino and MATLAB. Depending upon the character sent by MATLAB to Arduino over Serial. The stepper can be programmed to move or stop.