# Help: A Newbie's Drone Synth

**URL:** <https://lookmumnocomputer.discourse.group/t/help-a-newbies-drone-synth/292>\
**Category:** DIY STUFF\
**Created:** [February 21, 2020, 9:32am UTC](https://lookmumnocomputer.discourse.group/t/help-a-newbies-drone-synth/292 "2020-02-21T09:32:17Z")\
**Posts on this page:** 1\
**Showing post:** 25

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**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\
**Post date:** [February 23, 2020, 8:41pm UTC](https://lookmumnocomputer.discourse.group/t/help-a-newbies-drone-synth/292/25 "2020-02-23T20:41:53Z")

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The build instructions for that VCO mention an exponential converter but doesn’t explain how to build one. This article (by the same author) has the schematics:

> **[DIY Synth Series Part 1 — The Exponential VCO - Projects](https://www.allaboutcircuits.com/projects/diy-synth-series-vco/)**
>
> Build a 1V octave voltage-controlled oscillator (VCO) module and create your own analogue synth sounds.

(Kristian Blasol of [Modular In A Week](https://www.youtube.com/playlist?list=PLyE56WXw0_5Q5QGMEXWmskuhojKyRdA3T) fame is currently live streaming a build of the AAC version, and I thought the schematics looked suspiciously similar 😀 )

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