Circuit Bent White Yamaha PSS-20 Keyboard by freeform delusion

**** i've updated this keyboard here - http://www.youtube.com/watch?v=neOZwKjmxNk

The mods are:

Mono mini jack output (speaker removed for mods)

Four Toggles Switches - Each one has its own sound changing function

Lo-Fi Filter control - This sounds awesome and really works!

Pitch Control mod - Thanks to getlofi.com, I add the LTC1799 kit and can now take this unit up ultra high or deep and dark low, the drums sound excellent and the marimba is great (listen towards the end)

Facebook - http://www.facebook.com/pages/freeform-delusion/144587583120
Twitter - http://twitter.com/#!/freeformd
eBay - http://www.ebay.co.uk/sch/freeform-delusion/m.html

Category:

Music

Tags:

• Circuit
• Bent
• White
• Yamaha
• PSS-20
• freeform
• delusion
• synth
• synthesizer
• bass
• boost
• distortion
• pitch
• mod
• modified
• getlofi
• tone
• tonal
• keyboard

[1787dude]

so are you replacing some resistors with pots or adding 556 timers on a seperate board somehow?? not trying to bug you or anything I'm just seriously trying to get better at circuit bending and I always have trouble with pots.

[eecouk]

@1787dude 555 is on a seperate circuit so is the LTC pitch mod. getlofi.com have info on how to connect them up. With the pots its just a matter of trying each one to see which on works best.

[1787dude]

Thats awesome. so does the LTC pitch mod only work on this keyboard or can it be used for other stuff too? Also I just bent a casio sa75 yesterday and I did a really good job on it. it has 4 different effects, self oscillates and has a random glitch body contact that does something different every time it's triggered.

[eecouk]

@1787dude The LTC will work on nearly all Casio & Yamaha keyboards. Get that SA75 open and put an LTC in. The glitches will sound even better :-)

[youpooed78]

is it possible to circuit bend it to make it polyphonic?

[eecouk]

@youpooed78 Hi, I don't think that is possible.

[1787dude]

I want to do as much as I can to that casio... I'm thinking about copying the LTC design. I don't want to or anything I just got 6 keyboards possibly more that I will be working on this month and maybe some speak and spells it would cost a fortune to get that many LTC kits lol...

[eecouk]

@paloo1102 Hi, the bends on mine I found myself, it took me ages to get the right bends on there. The pitch and lfo mods were added circuits from getlofi. But you can check out getlofi and circuit benders websites they may have info and pics of bend points for the PSS-20

[paloo1102]

This is great. I just picked up one of these at a thrift store a few days ago with hopes that it would be this bendable. Do you have any resources I should tap before jumping into this bend?