Bipolar Stepper Motor with BeagleBone Blue

Modify unipolar stepper motor to bipolar

I followed a
blog article
on how to modify this unipolar stepper to be bipolar, because BeagleBone Blue has built-in H-bridges.

Wiring

I used an EduMIP, which has DC motors on M2 and M3, so I grabbed M1 and M4.

I used a wiring housing to line up the wires to the stepper motor header.

• M1+: Pink (2)

• M1-: Orange (4)

• M4+: Yellow (3)

• M4-: Blue (1)

• center-tap (unused): Red (5)

Software

git clone https://gist.github.com/jadonk/1da9f20423c2e6c8a954eca1a3e8f7f2

cd 1da9f20423c2e6c8a954eca1a3e8f7f2

make

./stepper_example