Stepper motor not working

My stepper motors shake and whine but don't move I Have used my volt meter current runs through the motor, Then I tested my wires current runs good through it, I looked at my connections they look like the work, My marlin board should work Because my lcd screen works. What else could I be missing.

Could it be fried some place when I first wired it I switched the negative and positive wires then realised what I did and changed it right.

any one know what my problem is.

Your main problem is - based on your overwhelming information - that you will get no advice from here unless you bring somebody in the position to help you, so ->

  1. Read and follow the rules in "How to use this forum" (see URL in my signature below).
  2. Please provide ALL relevant information of your HW/SW so that we can have a look at it and get into the position to understand where your problem(s) lies.
  3. If you post your sketch, use code tags ('</>') and place your code between them.

Stepper Motor Basics
Simple Stepper Code

...R

Its not the stepper motors Current run through them fine.

Current run through them fine

Water flows downhill, too!

you should go to reprap forums since you are talking about a 3d printer

kjrinaz0:
Its not the stepper motors Current run through them fine.

Follow all the steps in Reply #1 if you really want help.

...R

kjrinaz0:
My stepper motors shake and whine but don't move I Have used my volt meter current runs through the motor, Then I tested my wires current runs good through it, I looked at my connections they look like the work, My marlin board should work Because my lcd screen works. What else could I be missing.

Could it be fried some place when I first wired it I switched the negative and positive wires then realised what I did and changed it right.

Have you replugged motor connections with the driver board powered up? That often destroys
the driver, steppers are very inductive and cause high-voltage arcing if you disconnect powered-up.

Have you set the correct current for the motor?

Have you checked the two coils are correctly connected to the driver (always use a multimeter to check
which wires connect to each winding before testing - wire colours vary from motor to motor). Bipolar
motors have two windings, call one A and the other B and connect accordingly.