How badly do you want/need this? The problem really boils down to the one minute flash period. There are plenty of LEDs with fixed timing between 0.5 Hz and 2 Hz +/-25% flash rate - they're everywhere. Very much slower than this and you are talking about a much smaller market coupled with more expensive timing components like CMOS counters, large capacitors (C > 1 uF) and large resistance values. And, you want it to be power-efficient as well.
I can see something like a small circuit board with 3 to 7 components (including the LED of your choice) and an external battery holder with wire leads. Price-wise, maybe $10 to $60 in pre-designed kit form depending on how close to your performance expectations you can afford. I could probably design & build one of these myself out of stuff from RadioShack and my garage, but I don't have the time. Good luck, _jim -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of joeuser Sent: Sunday, August 28, 2005 6:20 AM To: The Hardware List Subject: Re: [H] Weird one for you... inline... nobozoz wrote: > This is just about the simplest circuit I've run across: > http://www.uoguelph.ca/~antoon/circ/ledflash.htm > > It's not terribly power efficient, but it is supposed to run on only a > single AA (1.5V). > > Are you willing to build your own circuit to get the 1 second rep-rate? Not really. I'm sure these are available pre built. > > Is only 1 AA acceptable? > Yes but I want to not have to change the battery very often. > Does the LED need to be especially bright (like visible in bright sunlight)? > No not that bright. It should catch the eye in regular room lighting. -- Cheers, joeuser (still looking for the 'any' key)
