Foam v2
Foam is directly based on the way I ended up implemented the LFO in Möist. It uses an LDR (light dependant resistor) in parallel with the Time knob as the way to get an extra delay time depth control. So when I had the first prototype of Möist in front of me I started experimenting with switching out the LDR for other components.
I landed on using an FSR (force sensitive resistor) since it naturally is really fun to control delay time by pressing down on something. So coming up with a fun design to make this both interesting and foot safe for the user was the real challenge. The original Foam also has a second FSR that controls something it probably should not. But in V.2 I pulled it back and designed it around a larger FSR to have more of a pressure area for the user.
Foam v2 User Guide
The pedal uses 9VDC power (2.1 mm center-negative).
Input is on the right side (black ring) and output is on the left (white ring).
Triple Bypass:
This pedal uses a unique bypass switching system that I call “Triple Bypass”, where you have three different “modes” for turning the pedal on and off:
- Short Press: Works like any regular pedal. Press to turn it on and then press to turn it off.
- Momentary/Hold: If you press and hold for about 1-2 seconds the pedal will enter a hold mode. Here it will simply stay in the state it entered when pressing down the button, for however long you decide to hold down the button, and then return when you release the button. So if you press down when the pedal is turned OFF it will stay ON for as long as you hold the button pressed down, and vice versa.
- Tap Tempo Bypass: If you quickly double tap the bypass button (either when on or off) the pedal will enter the Tap Tempo Bypass mode. Here the pedal automatically turns itself on/off in whichever tempo you tap. So to change tempo you simply tap a new tempo.
N.B. Foam v2 continuously counts the time since your last tap. So if you have been in a tempo for some time and give the footswitch another single tap, it will set your new tempo based on the time between the pervious tap and the new tap - upto a maxium length of around 1min.
To exit Tap Tempo Bypass you simply press and hold the button for about 2 seconds. Note that when exiting this mode the pedal will be ON (regardless of if the pedal is in an OFF or ON state).
Controls:
FOAM2 is a PT2399 delay with the time parameter being controlled by a pressure sensor. The controls are super straight forward with full focus on giving you creative control by simply touching the big rectangle.
The left-hand “X” knob is your Mix control. From 100% dry, to introducing delay, to slight overdriving of the delay lines.
The center “F” knob is your Repeats/Feedback control. The pedal will self-oscillate when this is set fully clockwise (more in shorter delay times).
The right-hand “T” knob controls the Delay-Time. Turn it counter clockwise for shorter delay times and clockwise for longer delay times. It works together with the pressure control to set the range of effect - like a sensitivity control. So based on your settings you can (literally) push the PT2399 chip too far, which will simply cut the signal. In that case just dial it back to find where you want it.