[FrankJ]

The big changes are in 2015. Not this year.
Changes are required in part because the solenoid module is disappearing & other changes in the IO.

The basic control scheme shouldn't change: Processor reads a discrete input from pressure switch & turns on/off relay for compressor.

What are you looking for?
The pressure switch you can get from AndyMark
<http://www.andymark.com/product-p/am-2006.htm>
Relief valve <http://www.andymark.com/product-p/am-2002.htm>
Other stuff
<http://www.andymark.com/Pneumatics-s/398.htm>
The spike relay to turn on/off the compressor comes from Vex
Valves are a little more complicated since the rules call for a spec that not every valve MFR uses (including the KOP valves) Hopefully the rules will get revisited in this year.