Alright, so I am designing my own air ride system using the arduino and 8 solenoid valves, 4 rotary position sensors, and a touchscreen for a controller. I have done a fair bit of research and have my touchscreen working with the menus that I want already done. I have not ordered any parts yet, just trying to get the wiring schematic all ready to go before I start ordering parts.
These are the valves I will be going with (link below). they are 12V, 3/8", normally closed solenoid valves (part no: VXD2130-03N-6G1B) http://www.smcpneumatics.com/pdfs/VXD2.pdf
I have an arduino mega board. I based my wiring schematic around the playground solenoid tutorial (http://playground.arduino.cc/uploads/Learning/solenoid_driver.pdf). I basically used this same schematic 8 times.
From top to bottom they will be connected to pins 30-37. My schematic:
I also wanted to ask, the two pins above pin 22 are +5V out, and the two pins below pins 52 and 53 are ground correct?