Terrain Deluxe

The Terrain Deluxe is an optical harmonic tremolo. It modulates the Bass and Treble frequencies separately: it uses an electronic crossover to split the signal, then it uses two independent optical tremolo circuits to modulate the two signals 180 Degrees out of phase with each other. The two signals are then mixed back together resulting in a tremolo that swirls and sparkles in three dimensional space. There is a switch to go between normal and harmonic modes, and a tone control that acts as a mixer between the high and low frequency signal paths.
There are speed and depth controls, a waveform selector, gain control, a tap tempo foot-switch (with speed multiplier), and expression pedal inputs for speed AND depth. Finally the optical circuitry ensures that there is electronic separation between the Low Frequency Oscillator and the signal path for an exceptional high fidelity sound.

• Harmonic Tremolo that uses and electronic crossover to modulate Bass and Treble frequencies separately for a big swirly sound.
• Optical modulation circuitry for high fidelity.
• Speed Control, with expression pedal input (Tip: CW, Ring: wiper, Sleeve: CCW).*
• Depth Control, with expression pedal input (Tip: CW, Ring: wiper, Sleeve: CCW).*
• Gain control.
• Tone control (mixes between high and low frequency paths. Centre is flat).
• Speed multiplier switch (quarter note, eighth note, eighth note triplet).
• Normal / Harmonic switch.
• Waveform switch (square, sine, triangle).
• Tap Tempo foot-switch.
• Full bypass using relays.
• 9V DC input. 80 mA.

Artwork by Sabine Elliott

Technicians and Repair people! Source code available!
This is my first pedal with a microprocessor in it, specifically to run the Low Frequency Oscillator (LFO). But a microprocessor means SOFTWARE! As a repairperson, I was always frustrated when a customer's pride and joy failed because of a programable part that I could not get source code for. I did not want this to happen to my stuff; I want this pedal to be repairable by anyone. So I'm making the software available in source code for everyone to repair the pedal in the field. The software is called TREVLFO_V1.0 and was written specifically for the PIC PIC16F18313 microprocessor used in the Terrain Deluxe. I even socketed the PIC micro so you can take it out, re-burn it, and replace it. Special thanks to Tom Wiltshire of Electric Druid for allowing me to use his code as the starting point and not panicking too much when I re-wrote much of it ;).
TREVFLO_V1.0 source code.