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possible to make LED blinker at specific tempos?

Hi all,

I am a musician and not an electronics genius but wanted to ask a
question and see if anyone could help me. I am looking for the
materials and plans to make a VERY simple LED blinking device. It
needs to be very small, (probably powered by a watch battery or
smaller) and just blink a tiny, red, LED at a specific tempo.

Basically this is similar to a metronome except that it is very small
and there is no input for tempo, it just has an on/off switch. It is
like a metronome that only blinks one tempo. I would want the ability
to make different units blink different tempos but each one need not
be adjustable.

Does anyone have a circuit design or idea that would help me? Thank
you so much!!

Jason
 
D

D from BC

Jan 1, 1970
0
Hi all,

I am a musician and not an electronics genius but wanted to ask a
question and see if anyone could help me. I am looking for the
materials and plans to make a VERY simple LED blinking device. It
needs to be very small, (probably powered by a watch battery or
smaller) and just blink a tiny, red, LED at a specific tempo.

Basically this is similar to a metronome except that it is very small
and there is no input for tempo, it just has an on/off switch. It is
like a metronome that only blinks one tempo. I would want the ability
to make different units blink different tempos but each one need not
be adjustable.

Does anyone have a circuit design or idea that would help me? Thank
you so much!!

Jason

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

Paul Hovnanian P.E.

Jan 1, 1970
0
D said:
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).
 
D

D from BC

Jan 1, 1970
0
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).

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
 
D

Donald

Jan 1, 1970
0
Hi all,

I am a musician and not an electronics genius but wanted to ask a
question and see if anyone could help me. I am looking for the
materials and plans to make a VERY simple LED blinking device. It
needs to be very small, (probably powered by a watch battery or
smaller) and just blink a tiny, red, LED at a specific tempo.

Basically this is similar to a metronome except that it is very small
and there is no input for tempo, it just has an on/off switch. It is
like a metronome that only blinks one tempo. I would want the ability
to make different units blink different tempos but each one need not
be adjustable.

Does anyone have a circuit design or idea that would help me? Thank
you so much!!

Jason
http://www.google.com/search?hl=en&c2coff=1&q=555+metronome

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

donald
 
J

JeffM

Jan 1, 1970
0
thelubeexpert@ gmail.com said:
I am a musician and not an electronics genius
Jason

You also need to learn how to use Usenet properly.
(This is NOT "Google Groups"):
http://66.102.9.104/search?q=cache:...oogle-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:...dually+Disclaimers+deductible+Newsgroups-line

Your technique
http://groups.google.com/groups/sea...OnIFhuvvPyfmsHqZiDvCVswhrZ6TQxKj0ww&scoring=d
is selfish and inefficient

The last half of this thread explains WHY
and fleshes out the (more acceptable) cross-posting paradigm:
http://groups.google.com/group/sci....ups+*-*-*-*-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".
 
J

jazztpt99

Jan 1, 1970
0
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/U...
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... 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:
http://www.best-trans.com/images/subart/town.jpg

Your technique:
http://shezaf.net/zope/home/he/3/1128501915/kosovo 1999 man crying.jpg
is just lame and unnecessary.

love,
jason
 
J

jazztpt99

Jan 1, 1970
0
I forgot to say thank you to those of you who took 2 seconds to help
me instead of being an ass. thank you.
 
E

Eeyore

Jan 1, 1970
0
Hi all,

I am a musician and not an electronics genius but wanted to ask a
question and see if anyone could help me. I am looking for the
materials and plans to make a VERY simple LED blinking device. It
needs to be very small, (probably powered by a watch battery or
smaller) and just blink a tiny, red, LED at a specific tempo.

Basically this is similar to a metronome except that it is very small
and there is no input for tempo, it just has an on/off switch. It is
like a metronome that only blinks one tempo. I would want the ability
to make different units blink different tempos but each one need not
be adjustable.

Does anyone have a circuit design or idea that would help me? Thank
you so much!!

For accuracy you'll need a crystal oscillator.

By far the simplest solution in terms of parts would be a tiny microcontroller
e.g PIC or one of these which I like......
http://www.nxp.com/pip/P89LPC901FD.html

The product would consist of the micro, a crystal, a LED and a few passive
components.

You could have a couple of links on the pcb that you'd cut according to whatever
tempo you wanted, i.e. it would be user programmable.

Graham
 
J

jasen

Jan 1, 1970
0
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).

It's a pity the LM3909 is nolonger available,

http://www.redcircuits.com/Page87.htm

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

Bye.
Jasen
 
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