http://www.dazatronyx.com/stereo-panning-optical-tremolo/
The Stereo Panning Optical Tremolo is a beautiful piece of work by a friend and local pedal builder, Darron Thornbury. I'll let Darron explain it himself:
"Tremolos interest me as a good design has its own living pulse, which can sound lively like the instrument itself.
By shining a fading light against a photo-sensitive material, this tremolo uses all analog photo-coupling to restrict and vary the output. After a decade of development I've created this completely,unique circuit, as my ideal tremolo sound.
This is a stereo variation of my smaller Optical Tremolo. It can take a stereo input, or split a mono guitar input between two amplifiers. The out-of-phase switch changes the oscillator of each channel to be out of sync - so one comes up in volume while the other drops. This creates a strange swirling effect. All original analog circuitry and true bypass mechanical switching."
Today's tools:
Guitar: Carlton Custom Guitars "The Broadcaster" with Brierley Broadcaster Pickups
Amps: 2 x JTM45 and GB Cab models - Axe-FX III
Extra effects: Sun Plate Reverb - Axe-FX III
Cables: Goodwood Audio and Free The Tone
Power Supply: Strymon Zuma
Mic: Samson Airline77 (me)
Camera: Canon 60D (me) and Nikon D5100 (pedal)
Soundcard: PreSonus Quantum & Fractal Audio Systems Axe-FX III (guitar, mixing and bouncing).
Computer: Apple iMac 27" i7 3.4 GHz 16 GB RAM
Software: Logic Pro X, Waves Plugins, Apple Final Cut Pro X (video editing and Youtube compression).