Timer

[teberle]

I need to know how to build a timer that can be triggered on and will stay on for x seconds. This needs to be a standalone device that will work with a PIR, Mat Switch, etc...

Any suggestions or is this to vague?

 

[P. Short]

Look up the datasheet for the LM555 (any one of a huge number of other parts ending in '555'). There are other solutions using PICs or parts like the MC14541, but the 555 is often the best choice.

--

Phil

 

[DynamoBen]

Kit route:

http://store.qkits.com/moreinfo.cfm/K8015

555 Timer Info:
http://www.electronics-project-design.com/Timer.html

The 555 timer can be purchased at Radio Shack for a few dollars.

BTW this all sounds like Halloween stuff. If so you may want to post in there to for the benefit of others.

 

[teberle]

it is for Halloween, but I figured this was the place to post for hardware help. Once I get it all done I will post it in the Halloween forum along with some other stuff i'm working on.

Thanks.

 

[AI]

teberle; Here is some good info on the 555 timer I dug up for the Phily Mini. Hope it helps. AI