Now I have my wheels I can refine my design a little. Being able to hold them in my hand gives me a feel for how they attach, and their weight distribution. I refined my wheel hub and added some supports in the middle to keep my pulleys upright and also ordered some components to help me build my axels.
![](https://www.andyvickers.net/wp-content/uploads/2021/02/20200809_231446333_iOS-1024x768.jpg)
Flipping over the hub you can see where I mounted a stepper motor. Stepper motors do not make good motors for robots but I have a kabillion laying around from all the time spent in 3d printing so why not use them until I can settle on something better.
![](https://www.andyvickers.net/wp-content/uploads/2021/02/20200801_190618879_iOS-1024x768.jpg)
And so I connected the stepper motor to a driver and step generator and …. it works! tada!!
If you are interested in the components to drive the motor, you can grab them here:
Oak-Pine 3D Printer 42CH Stepper Motor Driver Shield Expansion Board DRV8825/A4988 UNO R3(Black)
I have everything connected to a meanwell 12v PSU in this instance.
This is a milestone for me. My belt arrangement worked, my tires move and everything fits!