I bought a Melnor Model 3060 battery operated timer with a mist cycle last year. The shortest cycle allowed is on for two minutes and off for 10. It is resonably priced around $30 I think. Batteries last for several monthes, 2 AA batteries needed. My pet gripe is having to reprogram the cycle when batteries are replaced. Al

I have one, that I've had for years, from a company called Tork. It is adjustable from 6 to 360 seconds, every 6 minutes. It's 120 volt (no batteries), and costs about $120.00. I also made one from old stuff that was laying around. It runs for 10 seconds, every 10 minutes (close enough), and cost about $10.00

If anyone wants instructions, and diagrams, for building your own, send me an e-mail.

Here is a link that might be useful: Tork

If you have a solenoid driven valve you could hook the solenoid up to a gralab model 451 timer(used for darkrooms) - they have this timer on ebay. It is totally programmable(x amount of time every y interval). It has a 120v output that would open your solenoid valve

Here's one I'm considering

Here is a link that might be useful: misting timer and valve

I used the gralab 451(i'm a newbie - just stuck my first plants in the sand yesterday) - I picked it up on ebay for $32 - I like it because it is totally programmable.(I'm playing w/ schedules now). I'd recommend this timer. The only bad thing is that alot of them do not come w/ instructions and the instructions can;t be found on the web. I finally figured out how to program it(after hitting evry button 10 times).

Try http://mistkits.com They have the timers you need and complete systems as well. It is a great site for whatever you need. The blog has some great gardening tips too.

Here is a link that might be useful: Mistkits.com