Tremulus Prime

This is the third guitar pedal I have made. It's actually a circuit design from 4ms pedals that has never been widely distributed - really boutique stuff! It was challenging, both because it has six knobs (and I was using solid core wire to connect them!) and because it uses an LED/LDR to control the tremolo effect. It's a mainstay on my guitarist's pedal board now though. It's so versatile, it can go from a light vibrato to a fully helicoptered "metal" sound, and everything in between!

Check out some more pictures of the Tremulus Prime here.

The controls:

Spacing (Blue/Green) - Sine/Square wave blend (Red) - Depth - (Yellow)

Volume (Grey) - Fine Speed (Pink & Grey) - Coarse Speed (Pink & Black)

The LED to the right of the footswitch blinks with the rate of the LFO, and is always on (as long as the input cable is plugged in), so you can adjust the speed at any time (even if the effect is off).

This was a great project, I had a lot of fun designing the enclosure - figuring out all of the spacings required for the pots, LED's, buttons and jacks, and still making it look good! I will probably be using this layout for other pedals that need lots of knobs (get ready for the DriveOver Pro!)

Sound Samples coming soon!

PCB design and schematic used courtesy of

www.tonepad.com