Instead of chaining multiple guitar effects in search of a new sound, I decided to mod just one. Using an Arduino microcontroller board + digi-pot chip, I was able to add a variable gating effect to a fuzz pedal. source code + more infos here: blog.makezine.com video, audio, & riffs by Collin Cunningham
ZOOM 505 multi-effects pedal has been modified with an eight (8) point RCA patchbay. You can still save and recall your custom effects presets as well as modify them with the patchbay. This pedal is now one HELLISHLY LOUD noise generator!!!