[sdiy] Re: [AH] totally insane!! system 700 sequencer

[harrybissell at wowway.com]

Hmmm... and vinyl disks will never replace wax (which will in turn, not
replace tin-foil cylinders)...   :^)

I'd suggest that you use a suitable color LED, with a capacitor across the
LED. The current limiting resistor and the cap will form a LPF that will 
make the turn-on slow, the turn-off slow, and the LEDS to get dimmer as the
sequencer runs faster...

Instant "old-school" and no worries about burned-out bulbs...

If you're still worried about authenticity, use tantalum caps... :^)

H^) harry




On Fri, 11 Jul 2008 18:05:07 +0100, cheater cheater wrote
> Yeah.. incandescent bulbs will tend to blow because they burn out
> during the on-cycle. Leave em on and they'll be ok.
> Still:
> there should be enhanced-durability bulbs that you can use :)
> my point: dimly shining light bulbs can't be replaced by leds :P
> Nothing like staring into that orange filament when it's 3 am and you
> should have long gone to sleep. Hypnotizing.
> 
> D.
> 
> On 7/11/08, John Mahoney <jmahoney at gate.net> wrote:
> > I wouldn't recommend incandescent bulbs. The Synthesizers.com Q960
sequencer uses light bulbs in order to be more like the R. A. Moog 960, and
there have been numerous posts about their tendency to burn out, even though
they are run at lower than rated voltage (I think).
> >
> >  How about LEDs with vintage style colored lenses?
> >
> >
> >  John
> >
> >
> >
> >  -----Original Message-----
> >  >JH, couldn't your scanner do this after slight modifications? Separate
> >  >inputs for each step?
> >  >
> >  >As a side-question..
> >  >Too keep it vintage, can I use tiny bulbs instead of LEDs?
> >  >
> >  >Cheers
> >  >D.
> >
> >
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Harry Bissell & Nora Abdullah 4eva