#1
Does anyone have some schematics of some 555 IC pedals. (e.x. Tremolo, delay, phaser, flanger, vibrato, etc.)
#3
To be honest I wouldn't attempt this. The tremolo is an attempt at turning it on and off instead of lowering the volume, which can be applied to any effect really, and then the distortion will not work, or it will sound horrible.
Gear:
Schecter Hellraiser Deluxe
Boss DS-1
Crate GTD65

GAS List:
Mesa Boogie Dual Rectifier Roadster