I have been doing quite a bit of research to determine that there are many ways to accomplish the following, however I would like some assistance establishing the most elegant way to do the following:
I am creating a remotely triggered flash array that requires a solenoid with a delay - www.supernovaphota.com. There are three modules and a single control/trigger that will connect to the hot shoe on the camera.
The solenoid (uses approximately 250mA) that needs to open when the arduino receives a contact closure. The tricky part of this that I need to control the time the relay stays open by using a dial (preferably something with detents). Ideally, it will have 10 or more stops and range from momentary to 3 seconds. (0, .1, .25, .5, .75, 1, 1.5, 2, 3). Additionally, when the solenoid opens, I need to close another relay disabling another circuit.
If anyone has some recommendations as to the parts, this is for a project at Burning Man and the dial must be able to handle considerable amounts of dust and possibly moisture as it will be exposed to the elements and panel mounted to the ammo box containing the remainder of the electronics.
I haven't purchased any parts yet as I'm not sure the best way to do this. I figure the wizards on this message board can lend a hand.
I've been looking at a multiple relay board such as - (link to company selling counterfeit boards removed by moderator) - as one of the components.
Also, what would it take to control the delays remotely using an iPod or other similar device. I was hoping to use a radio trigger from my camera equipment, however is there an easy way to both trigger and control the delay remotely from a single device.
Thank you so much for your assistance.