VCO AS3340

Maker	EchelonForce
Type	Voltage controlled oscillator using the AS3340
Mounting	Mixed
Width	—
License	Proprietary (CC BY-NC-SA 4.0, noncommercial so not an open licence)
Difficulty	🌶️ Large through-hole

Revised to v2.1, which has its own write up separate from the v1 post. Passives are 1206 SMD on hand solder pads with through hole DIP sockets for the ICs, and no gerbers are committed.

Documentation

• Assembly instructions
• Bill of materials (BOM)
• Schematic

Links

• Source / files on GitHub
• Maker page

More from EchelonForce

Analog Switch Analog switch that routes a signal in the audio path Envelope Generator AS3310 ADSR envelope generator on the AS3310 Level Display Signal level display module LFO Stomp LFO built around the Electric Druid STOMPLFO chip MIDI to 16x16 CV Gate MIDI interface with 16 CV and 16 gate outputs Mixer Four input mixer using a single op amp Noise Generator Noise source built around the Electric Druid Noise2 chip Polyphonic Envelope Four channel polyphonic envelope generator using four AS3310s

More oscillator modules

Braids Mutable Instruments Plaits Mutable Instruments Edges Mutable Instruments CHORD VCO HAGIWO 3340 VCO diysynth Tom Yum Voxmachina 2OPFM Super Synthesis Castor & Pollux Winterbloom

This is a third-party open-source design, listed here as a build reference. Specs are researched from public sources; check the source repo and store for the current BOM, panel, and revision before ordering parts. Corrections welcome.

← Back to all builds Resources Suggest a correction or a missing module