I've been reading this thread for some time and now I'm starting to gather some parts to do some experimenting with crosspoint matrix switches. Regarding buffering.... what would be the lowest parts count/simpler buffer system? Can I use a CD4069 to build 6 buffers?
I just made one of these and need to make another: http://www.muzique.com/news/jfet-buffer-on-stripboard/
Low part count jfet buffer. Same thing, but different values and more compact vero layout. http://s76.photobucket.com/user/IvIark_2006/media/Layouts/Vero/JFETBuffer.png.html
I'm about to build a single chassis pedalboard that has a number of pedals built in (I have 12 built so far). I think if I were going to do something like this, I'd integrate it into that pedalboard. I'd probably use a 2-digit LED and use a microcontroller to handle the logic. I imagine I'd want it to work something like this:
You'd have an up-down buttons to set the digits on the LED. They'd indicate which "program" you wanted. A program would be a mix of inputs and outputs in a specific order.
So you'd go to the program # you want to create a setup for. There'd be a "Set Program" button that you'd press and it would turn off all the pedals. You'd then go through and active the pedals in the order you want them. The microcontroller would track the order. Then click the "Set Program" button again and that would store the pedal assignments and order.
Simply set the program number and it would active the pedals for that program in that order.
Not too far off from like a Floor Pod or something like that.