Mod: External switch to adjust the delay time via expression pedal

Shadow echo dr. JWho does not dream about starting crazy sound escapades, driving the delay to the border of oscillation and then, suddenly, turn back while you keep both hands on your guitar?
The installation of an external switch enables you to choose via an expression-pedal if you want to control the delay time or the repeats by using an additional expression pedal.
In this case, I modded the Shadow Echo Dr. J, but it is possible to modify almost every delay this way.
At the same time, you can use the output to connect the DelayDude Preset Box which enables you to choose between two freely configurable presets via footswitch.
Just ask the Dude.