https://vimeo.com/250683009

Oh, nothing fancy, just an analog square wave synthesizer -- That's OKAY... 2!

This is like the original OKAY but sports two octave of keys and an 1/4" audio out jack.

• Monophonic: Only one note at a time can be played. This is opposed to “polyphonic,” where multiple simultaneous notes can be played.
• Analog: There are no computers, microcontrollers, sound samplers, or anything digital involved. The sound you hear is the sound of a speaker being abused by discrete electronic components like capacitors and resistors and logic chips.
• Square-wave: When its output is viewed on an oscilloscope, its wave resembles a square. It’s a “hard” sounding wave type, great for bass lines, and commonly associated with chiptune music and old video games.

These are the 3D models for the OKAY 2 Synth DIY Kit. Read more about it here and purchase the electronics parts at http://www.oskitone.com/product/okay-2-synth-diy-kit.

Differences from OKAY 1: more keys, keys and key bed PCBs mounted to internal cradle piece, no key plungers, audio out jack

Advice

• The enclosure models are pretty big and are prone to warping. Minimize that risk by using a filament with low shrinkage like PLA and ensuring very good bed adhesion.

Updates

• 2018-02-13: improved keyboard cantilever bond for Cura slicer (now keys-2.stl)

Slicing guide and final assembly information is available at http://www.oskitone.com/guides.