The designers of a particular pinball game decided to go with USB A to Mini-B cabling to connect the computer (off the shelf Chinese motherboard) to the four IO boards.
We'd been having trouble with noise rejection - the game would randomly lock up or sections would freeze - and ended up with some USB cables from Digikey made by Molex, LLC, numbers 0887328802, 0887328502, and
0887328702.Example doc on the cable:
While these sheilded cables worked well in our shop environment the game was unreliable once it got to its new home - so I was curious what other considerations do USB controlled logic require besides shielded cables?
Oh, and the manufacturer of the game has gone out of business, so no recourse there.
Suggestions? I'd love to rip out the USB and replace with twisted pair, but that is a bigger job than the customer wants.
Schematics of the game are not currently available...
Suggestions?
Thanks!
John :-#)#