Luna Optical Tremolo PCB - Tremulus Lune

Luna (125B) - 4ms Tremulus Lune Guitar Pedal PCB



This is a new version of the Luna with an updated layout and support for top-mounted jacks. Includes bypass switch board. The previous version of the Luna is still available.

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Project overview

The Luna Optical Tremolo is a modified version of the 4ms Tremulus Lune, a classic DIY optical tremolo circuit that allows fine-grained control over the LFO shape.

Several of the Tremulus Lune circuit’s optional modifications are included standard in this PCB, including the Symmetry control as well as an external gain adjustment control so you can achieve unity volume with any setting.

The Luna adds a few improvements to the original design, including an input buffer to reduce noise and some added filtering to counteract ticking from the LFO. All of the knobs are located on the front panel in an efficient layout that is easy to build.

The new version of the Luna now uses standard 16mm potentiometers, which should make it easier to source parts than the last version. It also now has the Rate LED integrated into the footswitch board.