simple circuit to close switch for x seconds 2

[robmenn]

Hi. I'm an amateur so please have patience. I'd like to create a circuit that I can hook up to a household sensor light so that when the light comes on a sound would be produced by something for a certain number of seconds. I can’t find any retail products to do this so thought I’d try making it myself. Anything that would guide me in the right direction (eg: read this chapter in this book, etc.) would be appreciated.
Thanks in advance.

 

[melone]

Go to

http://www.national.com

and look up the 555 timer. Check out the spec and application notes and see if that helps.

Good luck and keep us posted!

 

[uWaveFDL]

Here is a tutoral page that may help too, have fun.

http://www.housing.uoguelph.ca/~antoon/gadgets/555/555.html

 

[elvik]

Hi,
I also suppose (just an idea, I can not point you to any website), that you can try to use musical greeting card. Just connect yout sensor output (relay, open collector) to card's switch.

Best Regards