Stepper Motor Drivers and Main Breadboard

1. Adding Jumper Wires to Drivers

Using 10 female-to-male jumper wires per driver, connect the female heads to the drivers. An example of proper connection is shown below.

Connect both the vial rotator and valve rotator drivers to the microcontroller case by positioning them on the provided pins on the case.
The vial rotator driver is positioned in the bottom left of the case, wherease the valve rotator is positioned in the top left of the case.
Ensure that the drivers are aligned such that the pins labeled “A”, “B”, “C”, and “D” are facing the left wall of the case.
For the vial rotator driver, feed the jumper wires connecting to pins labeled “A”, “B”, “C”, and “D” through the rectangular opening on the left side of the case.

Place the main breadboard in the space between the two stepper motor drivers.
Using 3 male-to-male jumper cables, connect the 5V, 3.3V, and ground lines from the microcontroller to the breadboard.

On both drivers, connect the male head of the jumper wire located on the ”+” label of the driver to the 5V line you created on the breadboard.
On both drivers, connect the male head of the jumper wire located on the ”-” label of the driver to the ground line you created on the breadboard.

Successful configuration should look like below. Please ensure that your setup looks similar to the example below before proceeding to the next step.

Breadboard