Uno, Motor Shield and Stepper Motors - required voltage and amperage

Other Hardware Motors, Mechanics, Power and CNC
5

Here is my second iteration.

First, Thank you for taking the time to respond to my post.

Will the following work?

Using an UNO as the microprocessor and either

Stepper Motor #1
7.4 V
1 A per coil
7.4 Ohms per coil
0.9 N.m Holding Torque (9 Kg.cm)

OR

Stepper Motor #2
3.6 V
2 A per coil
1.8 Ohms per coil
0.9 N.m Holding Torque (9 Kg.cm)

And as the driver
DRV8825

Power Source for the stepper motors
12 V
3 A
Or should I use 24 V & 3 A?

Will this work?

If so, is there any other hardware I need?