This is the first finished design created in Solidworks, which is a cad software provided by university.
I decided to use the Planetary Gearbox Stepper: 42BYGH40(M)-160-4A NEMA 17 Bipolar 99.55:1. After looking in libraries for a design of those for cad software solidworks and since I am still developing my skills in Solidworks the decision was created my own, it will be required a cad software to view or manipulate this file (Solidworks eDrawings free for viewing this file).
The dimensions of the motors were taken from the mechanical drawing from Active robots website. The motor was intended for demonstration purposes, after realizing their price with our budget been £50; it was required to find another solution.