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DIY Stompboxes => Building your own stompbox => Topic started by: vacuumdust on October 02, 2012, 12:41:35 PM

Title: FSH-1 vc in to control rate of s&h ??
Post by: vacuumdust on October 02, 2012, 12:41:35 PM
I don't even know if this is possible but i'm looking for a point in the circuit to add a CV in to control the rate of sample and hold.  I have access to a moog little phatty with CV outs and I thought it could be interesting.  Any thoughts??  Heres the schem http://www.generalguitargadgets.com/diagrams/fsh1asc.gif?phpMyAdmin=78482479fd7e7fc3768044a841b3e85a  Other thoughts on CV ins for this circuit would be welcome too.  Thanks
Title: Re: FSH-1 vc in to control rate of s&h ??
Post by: Mark Hammer on October 02, 2012, 12:46:14 PM
The simplest thing would be to place the LDR half of an optoisolator in parallel with the speed pot, and drive the LED half with a suitably current-limited source.
Title: Re: FSH-1 vc in to control rate of s&h ??
Post by: mth5044 on October 02, 2012, 12:58:31 PM
What I'm doing is replacing the entire S/H part with Electric Druid's Tap LFO which has a random setting and using its CV ins.

..still working on it  :icon_lol:
Title: Re: FSH-1 vc in to control rate of s&h ??
Post by: vacuumdust on October 02, 2012, 01:42:49 PM
I'll check out both those options  THanks.  The opto is definitely something i feel capable wiring up.  I have not looked into the tap LFO..but I will.