the stepper motor must be a bipolar one.
i need the coding for a stepper motor with three or two terminals

it is for designing a robotic arm and these stepper motors will be place in finger joints and hence for a finger i will be having three stepper motors.
In total there will be 14 stepper motors (since for thumb i require just 2 stepper motors).

i was very much confused with interfacing them.
so can anyone help me with it