[sdiy] presets on a modular

[Richard Wentk]

At 10:04 11/11/2004 +0000, Paul Maddox wrote:

>So to patch you hold down a source button, then push a destination button,
>simple and quick.

I think you need toggles not momentaries. Unless you have *extremely* long 
arms, like Klaus Schulze does. (Apparently.)

A display that holds the last setting is more informative, and you could 
also stack up multiple destinations more easily.

So the operation would be:

Press an output. It lights up and perhaps flashes, with any inputs it's 
connected to.
To connect/disconnect an input, press that input.
That particular 'patch cable' collection remains lit, and inputs can be 
toggled until you press another output.
And so on.

The only reason for using momentaries instead of toggles would be current 
drain from the LEDs, and that's never going to be a serious problem.

I wouldn't be bothered about variable colours unless budget were no object. 
It would look great, but it's a *lot* of extra complexity and expense for 
what are really just cosmetic reasons.

If you have voltage level of sensing of pots with a uC, then an alternative 
would be to lose the input toggles and put an LED next to each pot. So 
you'd create a link by moving the destination pot instead of pushing a 
switch. One stage less, and slightly less hardware.

Richard