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It seems that things on here aree getting a bit....wellll.... limited. Ok, a posting on here for a flashing dog collar (or on one of the many newsgroups)
...while silly, got me athinkin'. anyone want to try a design challenge for the worlds longest LED flasher circuit?
Simple....easy cheap parts is the main reason why I picked this subject. We could actually post pics of our circuits working...and occasionally check back to see whos lasted longer. Yah...the worlds greatest Hi-Definition TV design would be more challenging...but even guys without a lot of design and practical experience could get in on this one.
NO DEDICATED LED FLASHERS ON A CHIP like the long discontinued 380whateverthehellitscalled chip, and no SOLAR CELLS for recharging. Maybe we could even say that it has to be able to run off of a single AAA cell... or 1, 3ag button cell...but im looking for more input on that detail from y'all.
Maybe a challenge on the longest to keep a ultrabright white led continually lit from a specific number of batteries???.
Anyone else have any ideas on a circuit that could be used in a design challenge that would use junkbox parts...let us all know!!
Ill actually stick my neck out and say that Ill send a trophy to the winner.

Sorry, but I regretfully have to decline your offer -- I am too busy designing useful and sensible circuits.

Robert Reed wrote:Sorry, but I regretfully have to decline your offer -- I am too busy designing useful and sensible circuits.

Well Robert...there are quite a few beginners that read this Board. Maybe you could enlighten us all, and post a design that would remove the gigantic Pickle from YOUR ASS!...and then design another piece of equipment that would remove the Pickle from the Pickles ass. This would seem to be a fairly important thing to design....HURRY! TIME IS OF THE ESSENCE!

My last simple one ran for over two weeks straight off two AA Nicads and a 555.

And I didn’t even try to save on energy.

Slow down the pulse, drop the voltage,... and a month would be nothing.

-JPKNHTP

Are the specs on the contest details final yet? I might think about joining this...

Bigkim , Now that sounds like a useful and sensible design, but before I get started, there are certains parameters I need to know such as - HOW BIG IS THE PICKLE NOW RESIDING IN YOUR ASS! Since you mentioned time is of the essence, I am assuming you are in quite a bit of pain.

wrong forum, pickle picking would be "Robotics"

lighten up guys

Robert Reed wrote:Bigkim , Now that sounds like a useful and sensible design, but before I get started, there are certains parameters I need to know such as - HOW BIG IS THE PICKLE NOW RESIDING IN YOUR ASS! Since you mentioned time is of the essence, I am assuming you are in quite a bit of pain.

Hey...I just attempted to get some sort of interesting thread going with the less"seasoned" members of tjhe group. Go back and re-read your posting and see if you dont sound just a bit POMPOUS in your reply.... jackass.Oh...and GOOD sarcasm doesnt just repeat what the person originally said.
Besides...why are you even responding????...arnt you far too busy with your IMPORTANT design work. In the time it took to re-post...a IMPORTANT designer such as yourselfcould have designed a nuclear powered flasher.

Chris Smith wrote:My last simple one ran for over two weeks straight off two AA Nicads and a 555.

And I didn’t even try to save on energy.

Slow down the pulse, drop the voltage,... and a month would be nothing.

I could do a month with a LED that has a built-in flasher....I was thinking more along the lines of months, if not years.....

Hi there,

I did a test once to see how long i could get out of a High Brightness
Green LED (because i had that one laying around) but it could have
been a while LED too.
I connected it to a 9v battery via resistor and it ran for 39 days,
until which time it was still lit up but i considered it too dim to use
for anything useful.
The 9v battery wasnt even new, it was used ha ha.

Bigkim
I do not wish to wage war with you here. As far as i am concerned, we are just throwing spirited but good natured jabs at each other. At least thats the feeling on my end,and with no real malice intended. I wish you all the good sucess with your post.

I was an amateur back then, and my cells were used pulls from silicon valley.

All 5000 of them.

All I needed from the experiment was the battery life, not the flashing led experiment.

Based on the discharge of the 555 and circuit, I got well past the predicted 40 hours by quite a huge factor of 8 times.

dyarker wrote:wrong forum, pickle picking would be "Robotics"

lighten up guys

How about a pickle powered LED flasher using dissimilar metal electrodes shoved up the pickle's a$$? You could make as many cells in series as would be appropriate by slicing up the pickle into separate cells.

er, a pickle powered photonic puppy pulser...as it were. Of course, sour pickles might make the puppy pucker!

Lately I've been spending my spare inventive energy developing a design for an automatic water hose powered playground swing. But that's mechanical design and this is an electronics oriented message base.

Bob

See http://www.servomagazine.com/forum/viewtopic.php?t=1671 for my comments and suggestion for an even better contest.