Motor Stepper Example

[Ioannis]

Hi astanapane.

One pulse on STEP input moves motor one step only.

Ioannis

[astanapane]

Hi astanapane.

One pulse on STEP input moves motor one step only.

Ioannis

Hi Ioanni

I will do some tests on the Code and once i have some Good news i will let you Know.

At the moment I'm on the 3d design of the model. Actually i design a Base for the stepper Motor.

May i ask you something that might sound stupid?

On the Motor i have it is recognised as a 1.8 degree angle.

They do say that is a 200 step per revolution.

If i turn the axis by hand i feel the steps but as i measured is not more that 50 steps.

Am i right or what i try to count doesnt have to do anything corresponding to its operation and the 200 steps.

[Ioannis]

The actual steps have nothing to do with what your are feeling turning it by hand.

If you follow the step pulses then you will confirm the 1.8 degrees/step. With microstepping even less, but this is complicated for now.

Ioannis

[astanapane]

thanks for the clarification.

i will do my tests and will upload my code.

[HenrikOlsson]

The 50 detents you feel when rotating the shaft by hand comes from the 50 magnetic poles of a standard 1.8° 2-phase motor. Had it been a 0.9° 2-phase motor you would have felt 100 detents.
Moving the rotor between two "natural resting positions" (the detents) takes 4 electrical steps (the 90° phase shifted signal you use to drive the motor). 4*50=200 steps.

/Henrik.

[astanapane]

That is really interesting.

I learn from you guys everyday. Thanks a lot.

New i only need to understand how To give a step and a direction at the same time

[HenrikOlsson]

Basically you don't.
You set the direction signal high or low depending on the desired direction, then you start sending out the step-pulses. You want to make sure the direction signal is in its correct state before the step-pulse goes out. If it's not the motor might move a step in the wrong direction.