[rfolea]

You CAN hold intermediate positions with pneumatics. You just need the right kind of valve.

You need a "5 port, 3 position Center Closed" valve. This type of valve can shut off both ports and holds the current position indefinitely using NO POWER - something motors can't do ...

The types of valves we normally use in FRC are 5 port 2 position valves - they don't have the 3rd closed position so yes, they are "binary."