[sdiy] DIY patch matrix idea

[Ģirts Ozoliņš]

Or here’s a DIY project from Alain:
http://www.acxsynth.com/matrix/matrix.htm

 

Only thing - make sure if you are ok just with having switch matrix vs
mixing matrix.

 

Be well!

 

Girts

Erica Synths

 

From: Synth-diy [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of
Tim Ressel
Sent: Saturday, May 21, 2016 10:21 AM
To: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] DIY patch matrix idea

 

Call me a high tech heretic, but I lean toward using a cross point switch IC
like the ADG2188, and having a matrix of pushbuttons/LEDs for control. That
way you can save and restore configurations.

-TimR

 

On 5/20/2016 8:09 PM, Oren Leavitt wrote:

With sources of ready-made patch matrix solutions being scarce, I have been
mulling over ideas for a DIY patch matrix. 

I am thinking of using 2.5mm or 3.5mm stereo TRS mini phone jacks arranged
in a matrix. These can purchased in bulk for reasonable prices. The tips
would be wired as "columns" connecting to a source. The rings wired as
"rows" connecting to a summing node input. 

The plugs would house a standard 100K resistor wired from the tip (source)
to the ring (summing node input). Additional "special" plugs can be fitted
with smaller or larger resistors for added gain or attenuation, or an AC
coupling capacitor. 

These jacks could even be used as "inserts" for an external signal processor
between source and input. 

- Oren 
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-- 
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com <mailto:timr at circuitabbey.com> 
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