Looking for countdown timer

[Delphinus]

http://reefcentral.com/forums/showth...eadid=1150133&



(I want to try this..)

[Delphinus]

Haha, sorry, Ol'Nobodaddy, you beat me to it

I guess this kind of switch is called a "shutoff timer" not a "spa timer". (If you go on a hunt for one, might be easier to find if we call it the right thing!)

[Pan]

Originally Posted by Delphinus

Haha, sorry, Ol'Nobodaddy, you beat me to it

Yeah i've got a lot of bookmarks of potential interesting things reef related. If i could only start working on the tank, instead of just reading about things i could do to it i might have fish in it this year.

[Jason McK]

Cool Link Thanks Guys. I'm a little concerned about the live pin described as NC when the timer is active. I guess I could insulate it off to avoid arcing.


J

[4ptbuck]

The RC post is what I was thinking. No worries with the NC pins. It won't arc, but it'll get ya if you don't put it in a box.

[Delphinus]

Cover it in a gob of silicone maybe? That's what I'd do.

[kwirky]

a 555 timer project would do the trick if you're up for learning about electronics and have the time to put one together. it would involve a 555 timer and a 120vac relay.