Looper with a flip flop switch?

[moro]

I was talking to a friend today and he thought it'd be useful to have a looper box with two FX loops, and a third switch to invert the states of the loop switches. (There'd be a tuner mute too, but we can ignore that for this discussion.)

So if you had loop A on and loop B off, hitting the flip flop switch would turn A off and B on. If both were on, hitting the flip flip switch would turn both off. Etc.

I assume you'd use momentary switches and some sort of logic chip. I'm not sure how though. I imagine the answer is on Geofex somewhere but I haven't been able to find it.

Can someone help me out? Thanks.

[moro]

Ah ha. I think I found it:

http://geofex.com/article_folders/cd4053/cd4053.htm

So I'd have wire up the first two schematics for each loop, then a momentary DPDT acting as the flip flop switch? How would you do this to flip flop an arbitrary number of loops?

Also, in the first schematic, could you use the third SPDT for the indicator LED?

[Skreddy]

You can make a simple exclusive A or B loop switch including LED indicators with a single 3PDT.  Not a flip-flop, per se, but it does at least switch between two loops.

[moro]

You can make a simple exclusive A or B loop switch including LED indicators with a single 3PDT.  Not a flip-flop, per se, but it does at least switch between two loops.

Thanks, but that doesn't really do what I need.