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

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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.