send back your happs controller....
go to
www.oscarcontrols.com and order his usb mouse interface board.
If you split the output wires you can share the same board for your spinner as your trackball. Even if not, it's usb so simply buy a second board.
The optipac is around 50 bucks, happs inteface is around 100. Oscar's board is a whooping 12.95

See guys unless you are running a ton of optical devices, there isn't reason to use anything more than a simple mouse hack.
Save yourself some money.
