possible to make LED blinker at specific tempos?

Why not write a Visual C program to make a computer screen blink? D from BC

I think the 'very small' requirement sort of rules this out.

The best way to do this would depend on the skill set of the OP. A simple circuit built around a 555 would be easiest for someone with no programming skills. The downside being that this might not work well with a small watch battery.

A small PIC with a simple program would be small, minimal parts count and efficient (battery-wise), but is going to need a bit of code (well, quite a few bits, actually).

--
Paul Hovnanian     mailto:Paul@Hovnanian.com
------------------------------------------------------------------
Programmers don\'t die, they just GOSUB without RETURN.

Well..there was no explanation for it being small ...so I just neglected the smallness.. I'm just bad that way.. :) Maybe program a PDA instead :)

I recall seeing 1.5V specs for a cmos 555.. (Texas Instru.. IIRC) Maybe that'll work ok on a watch battery..

A nice program feature in the PIC version could be an energy saving auto off into sleep mode. zzzzzz D from BC

Lots of hits, so scan thru these till you find what your looking for.

donald

You also need to learn how to use Usenet properly. (This is NOT "Google Groups"): http://66.102.9.104/search?q=cache:ypHxBbi7_W8J:en.wikilib.com/wiki/USENET+follow-Usenet-customs-and-*-rules+*-a-service-for-*-*-*-*+hide-the-fact-*-*-*-they-are-*-on-Usenet+concerns-*-*-*-*-about-the-Google-interface+zzz+*-*-*-*-*-*-*-*-*-*-*-*-*-is-now-legendary+qq-qq+Google-cannot-muster-*-*-*-*-*-*-*-*-*-*-*-*-* If you feel *compelled* to ask the same question in MULTIPLE newsgroups, *this* is the prefered technique: http://66.102.9.104/search?q=cache:qHhBKJ-sXKYJ:en.wikipedia.org/wiki/Cross-post+adequately.answered+corrected+with.commas+individually+Disclaimers+deductible+Newsgroups-line

Your technique

is selfish and inefficient

The last half of this thread explains WHY and fleshes out the (more acceptable) cross-posting paradigm:

*-*-*-*-*-*-*-*-appear+*-proper-answer-*-*-*-given+much-easier-*-*-*-*-*-*-*+*-frowned-on+*-correcting+*-Followup-To-*+*-*-_perfect_-*-*-*-*+*-*-*-too-lazy-*-*-*-*-*-appropriate-*+*-polite-*-mention-*-*-*-*-*-*-*+Just-because-*-*-*-*-*-*-*-*-does-not-mean-*-*-*-*-*-*+mark-*-*-*-*-all-*-groups+*-*-*-*-two-groups-*-*-aren't-*-different

The last post in that thread hints at why (clueless) Google Groupers are so reviled by those who read Usenet using a "newsreader".

Groups"):http://66.102.9.104/search?q=cache:ypHxBbi7_W8J:en.wikilib.com/wiki/U...

technique:http://66.102.9.104/search?q=cache:qHhBKJ-sXKYJ:en.wikipedia.org/wiki... yadda yadda yadda

Sounds like someone pissed in Jeff's morning flux capacitor relay timing switch. I would think you could be more productive with your time than insulting me on multiple forums, isn't there a rule and website you'd like to paste for me on that jeffie?

Allow me to explain. This is what normal guys do on saturday night:

Your technique:

is just lame and unnecessary.

love, jason

I forgot to say thank you to those of you who took 2 seconds to help me instead of being an ass. thank you.

It's a pity the LM3909 is nolonger available,

may be an option, but also may be too complex.

Bye. Jasen