3 DC motors

Projects Programming
1

Hi
I have 3 DC motor A,B,and C
At the first time i want the motors B forward and C reverse work only by angles 22 then
B reverse and C forward by angle 17

At the seconed time Motor A reverse and B and C work together forward by angle 30
Then A forward and B and C togather reverse by angle 45 using arduino mega with computer
Can you help me please

2

What measure the angle?

3

In order to move DC motors by an exact number degrees you need some form of feedback mechanism, such as a rotary encoder, so that you know how far they have moved. If your motors do not have such a mechanism then you should give up now. Doing what you want with servos would be easy but not with ordinary DC motors.

4

Or steppers.