tap footswitch:
depending on the
exp/pot_0 selector
setting
it will set the pot_0 value to its minimum or
maximum when pressed. In some patches it can be used to tap a tempo or latch a state (hold)
overload:
this LED indicates when the signal exceeds the processor's headroom.
It's mainly for when the signal is clipping within the algorithm because the audio input is limited
externally. The inputs of the processor can normally not be damaged. You might notice this
when you go crazy with a delay or a flanger's feedback oscillation for example.
So just an indication, nothing to worry about.
exp input:
can be used to externally control pot_0. Most commercially available expression pedals using a
TRS plug should work. The value is not really critical, although I would not go lower than 10k.
Some examples are the
Moog EP-2, Roland EV-5, and M-Audio EX-P.
You need to use
TRS
plugs and cables.
NO MONO PLUGS OR CABLES!
These will short out the
voltage inside the pedal and damage it.
Here is how such a TRS plug looks like.
The exp jack is connected to the pedal like this:
sleeve : ground
ring: 3.3V supply voltage
tip: controlling (varying) pin
If you really know what you are doing you can actually use a control voltage instead of a
resistance based controller. But you need to consider the connections and never exceed 3.3V. If
you do you will damage the pedal.
If you have any doubt when deciding what to connect to the expression input please send me an
email and I will verify that everything is safe.
By default I set the pedal up to have unity gain against the bypassed signal but if you want you can adjust a volume trim
pot inside the pedal.
For details about the available patches and their function visit this page:
http://www.davidrolo.com/effects/molecular-patches/
Thanks :)
David
http://www.davidrolo.com
[email protected]
