Boss DD-3

This hi-cut modification will stop high feedback and self oscillation. The feedback potentiometer has two caps to choose from a .1 uf and .22 uf. The pedal still retains stock functionality via a center off SPDT. Both modes cut out the infinite delay offering less repeats. At anytime it can be switched off and the pedal will continue to feedback audio. The Direct jack has been replaced with a TRS jack to allow various effects to be inserted into the delay. This dub modification is very handy because delays can now have reverberation, equalization or any other effect available.

Talk n Learn

1/4 Mono output with 100 ohm volume dial

Pitch down and up with course and fine knobs

Reset button (high pitch crashes)

LFO Mode with pitch, depth, rate and shape

Vactrol Mode. 

Powered by a regulated 9 volt battery

Kawasaki DSI Keyboard

Four feedback and distortion controls with 7 settings

1/4 Mono output

Here is the schematic of the bends on my keyboard

Casio KA-2

This is one of my first good bends. The hacks are a tempo control, expanded instrument selection and some hidden songs. The bends are a glitch threshold, feedback and bass boost. Other modifications include reset, 1/8 mono output, dual LEDs and volume. I've left a lot of room open because there are so many mods that haven't yet been incorporated.

Above is a schematic drawn in tux paint. The next one will be a the drum palette and secret songs.