Many tiny open source hardware synth modules (miniLFO, MiniVCA, MiniMix, MiniVCF, MiniEnv, miniPower) combine to make a tiny modular. STILL A WORK IN PROGRESS, I will be uploading Kicad schematics and PCB's over the first half of April 2025
So far we have built and verified:
- miniMCU v2,
- miniAudioMixer,
- miniVCA v3.0
Unverified but completed schematic (PCB layout happening as we speak)
- miniLFO
- miniVCF
- miniAdder
- miniPower
- miniEnv
- miniMux
- miniS&H
- miniLogic
- miniBinaryCounter
Each of these sub-modules is a building block that contributes to the functionality of the Analog Switch Mini. Explore the individual notes for detailed design and technical aspects.
- • A low-frequency oscillator module that generates modulation signals for other modules in the system.
- • It may include a submodule (as noted by the “MiniLED Indicator”), which can serve as a visual element or part of its modulation feedback.
- • A compact voltage-controlled amplifier designed to modulate signal amplitudes.
- • The module is built to be part of a system where “clean” versus “distorted” VCA characteristics can be explored for different sound textures.
- • A small mixer module used for blending multiple audio signals.
- • This module is meant to work in tandem with the other tiny modules, ensuring that various elements (oscillators, filters, VCAs, etc.) can be combined seamlessly.
- • A voltage-controlled filter module responsible for shaping frequency content.
- • It integrates with the rest of the system to allow for creative filter responses, drawing design ideas from several filter architectures described in related notes.
- • An envelope (or trigger) module (aliased as MiniEnv) that defines the amplitude or modulation contours over time.
- • This module adds dynamic evolution to the sounds produced by the synthesizer.
- - • It is designed to transform USB 5V power into a ±10V supply, which is essential for biasing and powering the analog circuits used by the other modules.
- • The project entails building a compact, modular synthesizer system based on a MiniPCB (or miniMCU).
- • It is designed to integrate multiple tiny modules (miniLFO, MiniVCA, MiniMix, MiniVCF, MiniEnv, miniPower) into one coherent unit, providing functions from oscillation and filtering to amplification, mixing, and power regulation.
- • The MiniPCB serves as the base platform to which each module attaches, creating a versatile and reconfigurable Eurorack-compatible synthesizer system.
- • The design allows for different “flavors” of sound (e.g. clean versus distorted outputs) by offering variant modules such as the MiniVCA.