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What would be the Easiest and most efficient way to make this?

I need a circuit that has a switch between 3 and 5 minute off times and a 3-5 second on time that repeats.  It needs ot ahve an on off switch and be as as efficient and compact as possibly, and fairly easy to make.

Thanks in advance for any help!

I need to order parts for it, so the parts I need would be nice.

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iceng5 years ago
What was wrong with the answers we gave you six days ago ?

A
aarroozz (author)  iceng5 years ago
All the answers from six days ago were basically "don't use a 555 timer". I thought mabey Zi'c get something more helpful with a rephrased question.
iceng aarroozz5 years ago
Here is a circuit just 4 you.
The timer is a 555 doing a 1 second frequency pulse.
The switch lets you select a 3 sec or a 5 sec count
which is further divided by 60 to provide 3 min or 5 minutes
depending on the single switch.
It runs until your power dies. A
3-5m3-5s.gif
kelseymh iceng5 years ago
Maybe he's a write-only user.
iceng kelseymh5 years ago
+1 WOM
frollard5 years ago
Sounds like the annoyatron...

http://www.google.ca/search?q=annoyatron&rls=com.microsoft:*&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1&redir_esc=&ei=poMKTpPhEanRiALXlP3OAQ

Same could be done with an astable 555 timer. (search for it...it's very easy and efficient)