DL-4 double preset mod?

[frigid midget]

More of a mod rather than a full blown diy project from scratch, but I figured it'd still be okay to ask it here.

I know this has probably been covered a zillion times before, but I'd still really appreciate a dummy proof explanation of how to pull this off.

I tried the super easy approach of simply hooking up a switch between the 'tip' and 'sleeve' of the expression pedal input, without even adding a led...

Shouldn't that allow me to save extra settings for each preset, and thus -sorta- give me twice as much presets?

To make me look even more stupid: I actually performed this mod before, years ago. Followed a little schematic I found online, and it worked like a charm. I don't remember what I exactly did back then, so I can't tell what I'm doing differently now.

I don't suppose I should've lift the tip/sleeve lugs on the exp input, disconnecting them from the pcb?

Thanks a lot.

[fuzzhead]

is it what you are looking for..

[frigid midget]

That's one of the schematics I used actually.

I must've done some sort of silly noob mistake converting to an onboard version, with the switch hooked up to the pedal's exp pedal input. I would think it's basically the exact same thing, but I wouldn't mind a dummy proof schematic that shows the wiring on the switch.

Like I said, I didn't use a led, nor any resistors. It worked fine when I did that to my old DL4, I don't remember using a resistor there...:s

[fuzzhead]

did you see this one

http://www.aronnelson.com/gallery/main. ... alNumber=1

Seems you can use SPST switch and the curent coming out of the expression pedal jack to light the LED, no battery necessary.

When the switch is off, the Line 6 sees about 3 volts on the tip connection, and that lights the LED, and when you turn the switch on, it shorts out the LED and the Line 6 sees 0v on the tip connection, just like what happens at the two extremes of their expression pedal, so I guess that it's correct to use no resistor/led while the tip is shorted to sleeve (switch on), but I think they must be there while the SPST switch is turned off.

[frigid midget]

Cheers.

I'll try that 10K resistor than. Can't see another reason why it wouldn't work, other than a dead solder joint, which seems REALLY unlikely.