I finished one of the many projects sitting on my bench. This is a clone of the Roger Mayer Voodoo Vibe. This was used most commonly by Led Zeppelin and Jimmy Hendrix. This thing is a BEAST. Tons of options and controls. I'll go through them briefly.
Speed:
This controls the speed of the modulation. There is an internal trim pot that can adjust the max speed and there is also an option to have an external expression pedal jack wired up. I opted to not have this.
Range:
This is a 6 position rotary switch. It goes from "classic" to "pulse". There are 3 positions for each mode. They resemble Soft, Medium, and Hard. They also increase with the turn of the switch.
Effect:
This simply changes from Chorus, Vibrato, and Tremolo
Symmetry:
This changes the sweep of the modulation across the sign waves.
Intensity:
I feel this is a little self explanatory...it sets the intensity of the effect.
Vol:
This sets the output volume of the effect.
Bias:
This alters the center of the sweep frequency and in tremolo mode sets the depth of the sign wave. It almost acts like a blend knob.
Mod:
This is a voicing mod. It is a 3 position rotary switch that changes capacitor sets within the effect. This give you the option to have a multitude of tones for each effect.
The PCB was designed by Brenja on the Madbeans forum. He also designed the Mod board. I acid etched and painted the Enclosure and did the artwork too. This pedal is a modulation monster and I plan on holding onto one of the 2 I have built. This was tons of fun and despite its size it was fairly easy. It fired right up and worked the first time.
Any ways here are some pictures. I'll try and get a video up soon. Thanks for reading!
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