Feb 09

Introduction and Synthesized Sound

After several iterations, Evil Quark is back!  This website exists only to collect my thoughts and reflect on my various interests.  If by some miracle of internet search you find yourself roaming these pages, I sincerely apologize for the random and hectic presentation of what you might find.  If you need clarification, have any questions, or just want to say ‘hi’, feel free to contact me!

The first project I’d like to memorialize is the building of a rudimentary synthesizer.  The tutorial that I followed can be found here:


Overall, this project was pretty awesome.  Years ago I used to make electronic music (mostly detroit and swedish style techno) so being able to create a synthesizer from scratch was both an interesting and personal project for me.   The end product was a square-wave oscillator (made from a Schmitt trigger) with an LFO.  Here’s a picture of the final circuit:

Square wave osc with LFO

Square wave oscillator with LFO

I want to have a better understanding of how the MOSFET transistor as well as the Schmitt trigger actually work (from a physics standpoint), and perhaps I’ll research this and make some informative posts in the future.

If you are wondering what the synthesizer sounds like, check out this video I made which showcases the audio.  Watch out Daft Punk!

Quick note:  The parts list on the hackaday website needs to be updated.  In particular, the Jameco link for the 47k ohm resistor links to a 47 ohm resistor.  I found this out the hard way and now have a bunch of 47 ohm resistors laying around.  If you attempt the project, make sure you get the 47k ohm resistors.  Or, you could just skip ahead and use the potentiometer instead.

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