This is my first X-Arcade mod.

X-Arcade - built like a tank

That big red dial on the right is a usb spinner.
This is a high quality item with an anodized aluminum finish and
a heavy duty flyweight.

More images and info after the jump.

USB Spinner

You can see the spinner body, flyweight and 2 tops.
I chose the heavier flyweight for the inertia.

Spinner Installed

For the install, I replaced an existing button.
You can see the spinner body has near the same install
circumference as one of the arcade buttons.

I've tested it out, and I can say it works great.
Had an awesome game of tempest with this spinner.