Estban Fabacademy FPP

Testing Steppers

From my Professor (Xavi and Santi) I received some steppers to test and the first step was search the datasheets, also they give me a kit with one Arduino to try to program.

28BYJ-48 – 5V Stepper Motor
Step Motor Driver Board UL2003 4 Phase Module

git

git

This is a attempt whit a different driver, this is Pololu A4988.

git

This was the first code that I tryed with A4988 driver but no work.

git

Conclusions:
In This attempt I learned the difference between the UNIPOLAR STEPPERS and BIPOLAR STEPPERS, I`m trying with 2 different kinds of them.

Unipolar28NYJ-48 git
BipolarLDO35BYZ-B01-12 git

git

Step Motor Driver Board UL2003 4 Phase Module git

PololuA4988. git

The 1st time with the UL2003 the stepper worked nice, it was so cool to be true and actually in the next ones ones nothing works good. The thing was that this steppers drivers (A4988) are to bipolar steppers, and the 28NYJ-48 is a unipolar stepper.So when I changed to LDO35BYZ-B01-12 I thought that everything would change but NO!
Here is the explaneation

This is the sketch that I used to try whith These components. git

CHANGING THE COMPONENTS-Attempt 2.

I decided to change the steppers (SM-S4303R) and I was trying with this new ones components, without driver and I thought start with the electronic design.

git

Here is the code that I used to program this attempt.

#include
Servo myservo;
int vel = 705;
void setup() {
myservo.attach(10);
digital 9
}
void loop() {
//servo parado (equivalente a angulo 90º)
vel = 720;
myservo.write(vel);
delay(1500);
}

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REFERRING

Sketchs

3D print test

Checklist

Testing Steppers

CHANGING THE COMPONENTS-Attempt 2.