Help me redisign this schem...

[O'malley's Alley]

I want to use a blinking led schematic for something I am building (photo resistor content stuff)  I took the blinking LED schematic from the 4ms tremulus lune, and it looks like this:



however, I do not want all those pots in there, just the speed one.  How can I redraw this to not have all the pots in it.  Or if anyone has a better blinking LED schematic with just a speed knob that would be much appreciated.

[O'malley's Alley]

sorry, better pic:

[axr]

http://www.commonsound.org/other/audiolfo.gif

http://www.commonsound.org/other/audiolfo.gif

[O'malley's Alley]

http://www.commonsound.org/other/audiolfo.gif

http://www.commonsound.org/other/audiolfo.gif

:?:  

Im just looking for a LED schem, not anything that is audible.

[RDV]

Courtesy of Joe Davisson


RDV

[O'malley's Alley]

Thanks.  What does the switch do to the circuit?

[RDV]

Look again.

RDV

[O'malley's Alley]

ok thanks.  can I just not wire in the speaker and just have the LED circuit?

[RDV]

ok thanks.  can I just not wire in the speaker and just have the LED circuit?

I think so. I thought this might be closer to what you were looking for. You might not even need the cap, but I'm not sure.

RDV

[petemoore]

Ansil posted the schematic.
 Used a 555, and like four or five other parts, one being a 100k V/R speed adjuster, also the cap could be changed for wider speed ranges, IIRC the pot does about a 4X speed adjust range.
 I don't know if I can find the schem, but it's around here somewhere, only a few connections besides V+ and Gnd.
 Might click on same PS as an audio path OA er what, I was going to run separate supply for the blinker, if it did [and probably would] click.

[Paul Perry (Frostwave)]

ok thanks.  can I just not wire in the speaker and just have the LED circuit?

I think you will need the speaker, but you can replace it with a low value resistor. Without the speaker (or resistor in that position) there is no feedback, and hence no oscillation, if my analysis is correct.

[O'malley's Alley]

does anyone have any IC based schems?

[Torchy]

http://www.uoguelph.ca/~antoon/