Flickering LEDs

C

Cliff Hartle

Guest
Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the case
like if I bought them from a store.
 
On Sun, 11 Dec 2011 12:39:19 -0500, "Cliff Hartle" <cknjsp@msn.com>
wrote:

Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the case
like if I bought them from a store.

If you only need a few you are probably better off getting the
Click to expand...
complete unit and taking what you want. The ones that I have seen have
a circuit in the base that causes the flicker effect. It's not just
the LED.

Tom
 
On 2011-12-11, Cliff Hartle <cknjsp@msn.com> wrote:
Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?
Click to expand...
LOL! There is no such LED. The candle-like flickering is produced by current
variations by the circuit. (The circuit and the LED may be tightly integrated
onto one board, but the LED is still just a non-flickering device.)

Do you know how to use a search engine? I found this in three seconds:

http://www.instructables.com/id/Random-Flickering-LED-Snowflake/step2/Modifying-LED-Tea-Lights/

Here, the author takes apart the tealight, removing the LED from the circuit
board, and taps the signal to drive the internal LED in an optocoupler.

The output of the optocoupler is used to drive a power MOSFET which in turn
causes a whole array of LED's to flicker.

A PDF circuit diagram is given (but not for the flickering circuit,
just for the mod.)
 
Tom Biasi wrote:
On Sun, 11 Dec 2011 12:39:19 -0500, "Cliff Hartle" <cknjsp@msn.com
wrote:

Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the case
like if I bought them from a store.

If you only need a few you are probably better off getting the
complete unit and taking what you want. The ones that I have seen have
a circuit in the base that causes the flicker effect. It's not just
the LED.
Click to expand...

The local 'Dollar Tree' store had a bunch, a couple days ago.


--
You can't have a sense of humor, if you have no sense.
 
On Sun, 11 Dec 2011 18:41:29 +0000 (UTC), Kaz Kylheku
<kaz@kylheku.com> wrote:

On 2011-12-11, Cliff Hartle <cknjsp@msn.com> wrote:
Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

LOL! There is no such LED. The candle-like flickering is produced by current
variations by the circuit. (The circuit and the LED may be tightly integrated
onto one board, but the LED is still just a non-flickering device.)

Do you know how to use a search engine? I found this in three seconds:

http://www.instructables.com/id/Random-Flickering-LED-Snowflake/step2/Modifying-LED-Tea-Lights/

Here, the author takes apart the tealight, removing the LED from the circuit
board, and taps the signal to drive the internal LED in an optocoupler.

The output of the optocoupler is used to drive a power MOSFET which in turn
causes a whole array of LED's to flicker.

A PDF circuit diagram is given (but not for the flickering circuit,
just for the mod.)
This guy says there are types with the circuit in the LED case. I have
Click to expand...
not seen these.
The op probably could get them quite cheap from China, if he needs
10,000 or more:)

Tom
 
"Cliff Hartle" <cknjsp@msn.com> wrote in message
news:jc2ps3$ca2$1@speranza.aioe.org...
Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the case
like if I bought them from a store.
Click to expand...
The only flickering LED is a faulty one, the flickering is done by a chip.

ISTR one of the science shows on TV saying that Philips discovered the most
natural looking flicker was produced by driving the LED with a melody chip.
 
Yes I can get them from Dollar tree but I need around 60 or so and and like
I posted I don't need the switch and the case and the 2032 battery


"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:M5KdncEz97qSl3jTnZ2dnUVZ_jmdnZ2d@earthlink.com...
Tom Biasi wrote:

On Sun, 11 Dec 2011 12:39:19 -0500, "Cliff Hartle" <cknjsp@msn.com
wrote:

Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the
case
like if I bought them from a store.

If you only need a few you are probably better off getting the
complete unit and taking what you want. The ones that I have seen have
a circuit in the base that causes the flicker effect. It's not just
the LED.


The local 'Dollar Tree' store had a bunch, a couple days ago.


--
You can't have a sense of humor, if you have no sense.
Click to expand...
 
Yes I can goggle and have seen that mod but they no longer make them that
way there is no extra circuit board . Just a battery, a case, a switch and
teh LED. Oh and a piece of plastic that looks like a flame.



"Kaz Kylheku" <kaz@kylheku.com> wrote in message
news:20111211103506.518@kylheku.com...
On 2011-12-11, Cliff Hartle <cknjsp@msn.com> wrote:
Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

LOL! There is no such LED. The candle-like flickering is produced by
current
variations by the circuit. (The circuit and the LED may be tightly
integrated
onto one board, but the LED is still just a non-flickering device.)

Do you know how to use a search engine? I found this in three seconds:

http://www.instructables.com/id/Random-Flickering-LED-Snowflake/step2/Modifying-LED-Tea-Lights/

Here, the author takes apart the tealight, removing the LED from the
circuit
board, and taps the signal to drive the internal LED in an optocoupler.

The output of the optocoupler is used to drive a power MOSFET which in
turn
causes a whole array of LED's to flicker.

A PDF circuit diagram is given (but not for the flickering circuit,
just for the mod.)
Click to expand...
 
On Dec 11, 12:23 pm, "Ian Field" <gangprobing.al...@ntlworld.com>
wrote:
"Cliff Hartle" <ckn...@msn.com> wrote in message

news:jc2ps3$ca2$1@speranza.aioe.org...

Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the case
like if I bought them from a store.

The only flickering LED is a faulty one, the flickering is done by a chip..

ISTR one of the science shows on TV saying that Philips discovered the most
natural looking flicker was produced by driving the LED with a melody chip.
Click to expand...
I and some friends have a patent on making simulated fire light by
using random noise and filters to go from a a flickering candle to
the house burning down. Big fires look better with multiple channels.
I know it works fine in a small Freescale chip so you could a PIC or
any processor you like. It would be an excellent programming
exercise.

G˛
 
Here is what I want to do.

I have 3 or 4 sets of candles for our Xmas tree. They are standard miniture
120 ac lights on top of a small plastic candles with clips that attach them
to the branches. They are a bit finiky and the bulbs get loose and I would
love to replace them with LED.

Even though I bought them years ago at Hechingers I found them again.

http://www.bronners.com/product/white-candle-20-light-set/1003499?tag=shpngcm&gdftrk=gdfV2399_a_7c470_a_7c5115_a_7c1003499&shoppingcom

My first thought was to hack up an existing LED string but thought the
flickering led would look better. I would also love to make it DC. Most AC
LED Xmas lights don't use a bridge rectifier so if you move you head back
and forth they kind of strobe.
 
On Dec 11, 9:23 pm, "Ian Field" <gangprobing.al...@ntlworld.com>
wrote:
The only flickering LED is a faulty one, the flickering is done by a chip..
Click to expand...
They definitely make color fading RGB LEDs that cycle
through a sequence of colors - I've got some. I assume
they have some sort of PWM circuitry inside them.

If they can do that then why not flickering LEDs...?
 
On Sun, 11 Dec 2011 17:40:44 -0500, Cliff Hartle wrote:

Yes I can get them from Dollar tree but I need around 60 or so and and
like I posted I don't need the switch and the case and the 2032 battery
Click to expand...
Well, if you need 60 of them, then for about $7.50 a pop and over a man-
week of design time (which ain't free) you can build them yourself.

How much does Dollar Tree want?

--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com
 
Well, if you need 60 of them, then for about $7.50 a pop and over a man-
week of design time (which ain't free) you can build them yourself.
Click to expand...
Not sure if I made myself clear, I don't want to make my own set of Tes
lights I want to use the same LED that they use to make a set of candle xmas
lights into flickering LED's vs the minature 12volt lights they are now.

So either I can get the LED component loose by itself or just gut some pre
made tea lights.
 
http://evilmadscience.com/component/content/article/189


"Cliff Hartle" <cknjsp@msn.com> wrote in message
news:jc2ps3$ca2$1@speranza.aioe.org...
Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the case
like if I bought them from a store.
Click to expand...
 
<stratus46@yahoo.com> wrote in message
news:c0fbe97f-1b75-4c07-971b-073cc9400636@32g2000yqp.googlegroups.com...
On Dec 11, 12:23 pm, "Ian Field" <gangprobing.al...@ntlworld.com>
wrote:
"Cliff Hartle" <ckn...@msn.com> wrote in message

news:jc2ps3$ca2$1@speranza.aioe.org...

Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the
case
like if I bought them from a store.

The only flickering LED is a faulty one, the flickering is done by a chip.

ISTR one of the science shows on TV saying that Philips discovered the
most
natural looking flicker was produced by driving the LED with a melody
chip.
Click to expand...
I and some friends have a patent on making simulated fire light by
using random noise and filters to go from a a flickering candle to
the house burning down. Big fires look better with multiple channels.
I know it works fine in a small Freescale chip so you could a PIC or
any processor you like. It would be an excellent programming
exercise.


Are you one of those people who always has to use a microcontroller when
most people would use a simple circuit with only a couple of transistors?
 
On Mon, 12 Dec 2011 13:43:24 -0500, "Cliff Hartle" <cknjsp@msn.com>
wrote:

http://evilmadscience.com/component/content/article/189


"Cliff Hartle" <cknjsp@msn.com> wrote in message
news:jc2ps3$ca2$1@speranza.aioe.org...
Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the case
like if I bought them from a store.


Good find! Perseverance pays.
Click to expand...
I am saving this link.

Tom
 
"Tom Biasi" <tombiasi@optonline.net> wrote in message
news:hbrce7pciv04rhl0pkangh6hfl8n3b1pfr@4ax.com...
On Mon, 12 Dec 2011 13:43:24 -0500, "Cliff Hartle" <cknjsp@msn.com
wrote:

http://evilmadscience.com/component/content/article/189


"Cliff Hartle" <cknjsp@msn.com> wrote in message
news:jc2ps3$ca2$1@speranza.aioe.org...
Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the
case
like if I bought them from a store.


Good find! Perseverance pays.
I am saving this link.

Tom
Click to expand...
When I found this site I was like where has this site been all my life. It
only took me year.

I so want an Egg Bot. Also the mini breadboards look something I would
want.

They also have a ton of stuff to do with their stuff. Like using the
flicker LED to drive a 1W LED to make real fire light. I had a project last
year where I needed "stage fire" in a Sousaphone. I could have hooked up
some small multi LED flashlights and have been set.

I spent all afternoon reading and checking out their youtube videos. I
better be carful before I get fired. :)
 
"Ian Field" <gangprobing.alien@ntlworld.com> wrote in message
news:LCsFq.65758$925.32687@newsfe16.ams2...
stratus46@yahoo.com> wrote in message
news:c0fbe97f-1b75-4c07-971b-073cc9400636@32g2000yqp.googlegroups.com...
On Dec 11, 12:23 pm, "Ian Field" <gangprobing.al...@ntlworld.com
wrote:
"Cliff Hartle" <ckn...@msn.com> wrote in message

news:jc2ps3$ca2$1@speranza.aioe.org...

Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the
case
like if I bought them from a store.

The only flickering LED is a faulty one, the flickering is done by a
chip.

ISTR one of the science shows on TV saying that Philips discovered the
most
natural looking flicker was produced by driving the LED with a melody
chip.

I and some friends have a patent on making simulated fire light by
using random noise and filters to go from a a flickering candle to
the house burning down. Big fires look better with multiple channels.
I know it works fine in a small Freescale chip so you could a PIC or
any processor you like. It would be an excellent programming
exercise.


Are you one of those people who always has to use a microcontroller when
most people would use a simple circuit with only a couple of transistors?
Click to expand...
Well if you see my last post you will see I found a source and much more.

One thing I found in my research was someone gutted a LED tea light and it
was one with the external chip. They hooked it up to a mini speaker and it
played "Happy Birthday". Seems they used surplus musical birthday chips to
make their fire.
 
On 2011-12-13, Cliff Hartle <cknjsp@msn.com> wrote:
One thing I found in my research was someone gutted a LED tea light and it
was one with the external chip. They hooked it up to a mini speaker and it
played "Happy Birthday". Seems they used surplus musical birthday chips to
make their fire.
Click to expand...
Problably Disney sued, and they couldn't do anything audio with their "happy
birthday" chips.

--
⚂⚃ 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---
 
On Mon, 12 Dec 2011 13:43:24 -0500, "Cliff Hartle" <cknjsp@msn.com>
wrote:

http://evilmadscience.com/component/content/article/189


"Cliff Hartle" <cknjsp@msn.com> wrote in message
news:jc2ps3$ca2$1@speranza.aioe.org...
Pretty sure I have posted this before, but has anyone ever seen the
flickering LEDs they use in tea light candles by themselves?

I just need the led not everthing else like the 2032 batteries or the case
like if I bought them from a store.


One of the direct from Hong Kong (ebay) stores would probably be
Click to expand...
cheapest if you don't mind waiting a week or two.

http://www.goldmine-elec-products.com/prodinfo.asp?number=G17848
http://www.goldmine-elec-products.com/prodinfo.asp?number=G18571

Most of goldmine's stuff goes on sale periodically for much better
prices

http://www.goldmine-elec.com/ sale flyer
 
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