[sdiy] 3 dollar lopass gate

Jacob Watters jacobwatters at gmail.com
Mon Mar 13 13:27:35 CET 2017


Great video. I want to make one of these for myself now.

Has anyone every tried to make one with the H11F1 optocoupler?


Jacob Watters


On Sun, Mar 12, 2017 at 5:50 PM, <rsdio at audiobanshee.com> wrote:

> Hmm, except that a bunch of 4066 chips would cost less than 4 cents per
> note switch - I don't see how you can hand-make LED+LDR gates for that
> cheap. You'd also get more bleed with the LDR, I expect. No, it's not all
> about cost, but time and labor, too.
>
> Brian
>
>
> On Mar 11, 2017, at 11:48 PM, Elain Klopke <functionofform at gmail.com>
> wrote:
> > So it just hit me that this would be an interesting and cheapish way to
> do the keying of all the notes on my paraphonic synth project instead of a
> bunch of 4066s.
> >
> > of course, after I placed the order, my brain did one of those old
> Master Card commercials...
> >
> > bag of LDRs on eBay: $12
> > bag of LEDs on MPJA: $8
> > 16 feet of heatshrink tubing: $4
> > realising you just signed up to burn your fingers 400 times: Priceless.
>
>
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