Pot memory

[MV]

Hi. I want to have a few leds around the knob with unlimited turns (like the Peavey Vypyr), so the leds would be indicator of the knob. Then I want to press a key or a switch, and knob would have another function. That's not a problem, to switch between functions, the problem is how to memorize previous setting? I don't know what to type on google to find that.

Thank you.

[Hides-His-Eyes]

It's very difficult to do without a deep understandng of digital design

[MV]

Is there any IC for that?

[lil PopTart kid]

How about a daul gang pot then the switch bypasses on of the Gangs and when it's the other way it bypasses the other gang.

[MV]

Yes, but dual gang pot is turning the both at the same time, not each other, but I need to be both of the parameters would be activated always, not one time one, second time the other.

[Taylor]

As HHE says it ain't easy. You'd want a rotary encoder and switch hooked to a microcontroller, then you'd have the micro controlling a digital pot chip, along with the LED ring. You'd need to write a program to read and interpret the encoder, save the memories, swap between them, and drive the LED ring. You don't need a deep understanding of digital design, as it's simple as far as micros go. But you do need to read up on programming them. For an idea on hardware implementation, check out the PTAP at thoughtprocessinc.com.