So I'm trying to figure out if this will work. I want to power/actuate a bank of 4 of these valves:
with a ruggeduino (http://ruggedcircuits.com/html/ruggeduino.html). According to the ruggeduino website, each output can support 500mA 5v, or 2.5W. These solenoid valves use less than a watt, and can run at 5V... So they should work, right?
EDIT: Looks like that's 2.5W total; each output pin is limited to 40mA. So I'll have to run a bank of MOSFETs to power these?
Excellent, thanks for the quick response. Where is a common place to buy these (MOSFETS, or relays? Which would be better?)
Since I will have to use the MOSFET's anyway, I'm going to use some more readily available 12V (3W) valves. If I'm building my board around the Ruggeduino, can I use a common 12V power source to power the Ruggeduino and the valves as well? I will be powering the ruggeduino, 4 12V/3W valves, and a few operating lights.
Power supply I'm thinking of:
or, if I can get away with it,
Also, will something like this work to control the valves?
My janky wiring diagram: http://i.imgur.com/Z6PwO.png
And where can I buy something like this? Relay Shield for Arduino - Open Electronics - Open Electronics