[sdiy] DIY patch matrix idea

[rsdio at audiobanshee.com]

Some of the Buchla systems have this kind of feature, don't they?

Brian

On May 21, 2016, at 12:20 AM, Tim Ressel <timr at circuitabbey.com> wrote:
> 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.
> 
> 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. 
>