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OKAY 2 Synth

by oskitone, published

OKAY 2 Synth by oskitone Jan 18, 2018

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Design Tools

OpenSCAD

License

OKAY 2 Synth by oskitone is licensed under the Creative Commons - Attribution license.

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37412Views 1154Downloads Found in Music

Summary

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)

Post-Printing

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

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Nice design, would you share what software you used to make this? thanks

Thanks! OpenSCAD

Thanks for the reply, I had not heard of this software, will be taking a look at it. Hopefully I will be printing this synth soon as well.

This project brings me back to my single digit years when i was most ignorant to reality...the small piano circuits in soft plastic cover...hold in between hands press with fingers, ole macdonald had a farm, iaiaooooo....man so much peace and tranquility looking at this post...one day ill get the mods and build one with this shell

how do i print this on a 200x 200 printbed?? could you cut the model in half so i can glue it togather?? Thanks for posting this design it is realy amazing quality and i've been waiting for one of these for a while.

I wouldn't recommend cutting it in half. There isn't enough contact area for glue.

Check out the original, one octave OKAY. Maybe this will fit on your print bed? https://www.thingiverse.com/thing:2556995/

OKAY Synth

I want to make one of these! But where do I get the parts? Your post isn't very clear about what parts you need, but it looks awsome!

Hi, thanks!

I've just updated the description to be clearer about where to buy the parts. Thanks for the recommendation.

(It's here, btw: http://www.oskitone.com/product/okay-2-synth-diy-kit)

If i didn't already have too many synths i would do this in a heartbeat :)

Love this design just wish electronics kit had a better price point, like at least 1/2 would be the only way this makes any sense.

Great design, well made !

I agree, I was really interested in the project, but on a tight college budget, $50+ is a bit much for something like this.

Hi, thanks for this feedback.

I'm hoping to get the price down in the future, but for now, at the small scale that I'm at (I'm just one guy, running this out of my house), this is as low as I can do.

Stay tuned though. I'll have projects in the future with fewer PCBs and parts, thus lower cost.

-Tommy

Did Glitchpudding leave again? that's the only explanation for something so good to be featured...

Well done man, great design!

Whats the real production cost?

Is the design files available for if we have a dual color printer? Id like to try some dif designs

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