Slow down blinking LED

Glorfindel · Post by **Glorfindel** » Thu May 14, 2009 4:29 pm

Any way of slowing down a blinking LED?

USS Atlantis · Post by **USS Atlantis** » Thu May 14, 2009 5:25 pm

If it's one of those with the blinky circuit built into the LED (an all-in-one), then no, I don't think there's a way to do it

One reason I use 555 Timer circuits or OP Amps to run my blinkers - I can custom set the blink rate in the design

Glorfindel · Post by **Glorfindel** » Thu May 14, 2009 8:49 pm

It is a self blinking LED. Speed seems to be good for use as a strobe, but far to fast for the red and green running lights on the upper saucer.

Glorfindel · Post by **Glorfindel** » Thu May 14, 2009 8:51 pm

OP Amps? New to me, what is this device you speak of?

Sparky · Post by **Sparky** » Thu May 14, 2009 11:03 pm

Op amp blinking:
http://kc6sye.com/techmages_3_17_04_c.html

the circuit is linked to in one of the sticky threads

Glorfindel · Post by **Glorfindel** » Fri May 15, 2009 8:00 pm

Sparky thanks for the clips. The difference seems slight but all very good.

USS Atlantis · Post by **USS Atlantis** » Fri May 15, 2009 8:32 pm

Sparky's clips show the op-amp in it's standard mode

Slowly brighten - slowly fade to black

That's typical of op-amp blinking

Here's a clip of what the 555 timer circuit does

http://s287.photobucket.com/albums/ll13 ... Beacon.flv

And the schematic for that is here

http://s287.photobucket.com/albums/ll13 ... acon-1.jpg