Can it also function as as a cheap spinner?
It depends on how picky you are.
The PowerMate sends key commands to the app.
This makes it "possible" to play spinner games, but not "optimal".
The best analogy I have is playing Centipede, or Missle Command, on an Atari 2600 with a trackball.
The trackball was seen by the 2600 as a joystick, so when you spun the trackball, the cursor would move toward the direction you spun, but at joystick speed.
wouldn't spinner games play better with it than with a trackball?
I would prefer a trackball to a PowerMate.
You get true optical response from a trackball, meaning that the character moves faster/slower as you move faster/slower.
The other option I have is the EZMount Arcade Spinner from ezarcadesolutions.com
I don't think they are in business anymore.
Anybody else have a link for them?
I would still need to come up with a solution for the volume control problem.
Depending on where you put the speakers, you can probably remote the controls that are already on them.
I decased my speakers, to mount them just below the marquee, and put the controls that came with them (power button and volume control) in the center, sticking out through the wood.